83_FR_37917 83 FR 37768 - Airworthiness Directives; Viking Air Limited (Type Certificate Previously Held by Bombardier, Inc.; Canadair Limited) Airplanes

83 FR 37768 - Airworthiness Directives; Viking Air Limited (Type Certificate Previously Held by Bombardier, Inc.; Canadair Limited) Airplanes

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration

Federal Register Volume 83, Issue 149 (August 2, 2018)

Page Range37768-37770
FR Document2018-16490

We propose to supersede Airworthiness Directive (AD) 2013-11- 03, which applies to certain Viking Air Limited Model CL-215-1A10 and CL-215-6B11 (CL-215T Variant) airplanes. AD 2013-11-03 requires repetitive detailed inspections for cracking of the left-hand (LH) and right-hand (RH) wing lower skin, and repair if necessary. AD 2013-11-03 was prompted by reports of a fractured wing lower rear spar cap and reinforcing strap. Since we issued AD 2013-11-03, further analysis has indicated the need for repetitive eddy current and borescope inspections. This proposed AD would require repetitive borescope inspections of the LH and RH wing lower skin and repetitive eddy current inspections of the LH and RH wing front and rear lower spar caps. We are proposing this AD to address the unsafe condition on these products.

Federal Register, Volume 83 Issue 149 (Thursday, August 2, 2018)
[Federal Register Volume 83, Number 149 (Thursday, August 2, 2018)]
[Proposed Rules]
[Pages 37768-37770]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2018-16490]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2018-0638; Product Identifier 2018-NM-016-AD]
RIN 2120-AA64


Airworthiness Directives; Viking Air Limited (Type Certificate 
Previously Held by Bombardier, Inc.; Canadair Limited) Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

-----------------------------------------------------------------------

SUMMARY: We propose to supersede Airworthiness Directive (AD) 2013-11-
03, which applies to certain Viking Air Limited Model CL-215-1A10 and 
CL-215-6B11 (CL-215T Variant) airplanes. AD 2013-11-03 requires 
repetitive detailed inspections for cracking of the left-hand (LH) and 
right-hand (RH) wing lower skin, and repair if necessary. AD 2013-11-03 
was prompted by reports of a fractured wing lower rear spar cap and 
reinforcing strap. Since we issued AD 2013-11-03, further analysis has 
indicated the need for repetitive eddy current and borescope 
inspections. This proposed AD would require repetitive borescope 
inspections of the LH and RH wing lower skin and repetitive eddy 
current inspections of the LH and RH wing front and rear lower spar 
caps. We are proposing this AD to address the unsafe condition on these 
products.

DATES: We must receive comments on this proposed AD by September 17, 
2018.

ADDRESSES: You may send comments, using the procedures found in 14 CFR 
11.43 and 11.45, by any of the following methods:
     Federal eRulemaking Portal: Go to http://www.regulations.gov. Follow the instructions for submitting comments.
     Fax: 202-493-2251.
     Mail: U.S. Department of Transportation, Docket 
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New 
Jersey Avenue SE, Washington, DC 20590.
     Hand Delivery: Deliver to Mail address above between 9 
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
    For service information identified in this NPRM, contact Viking Air 
Limited, 1959 de Havilland Way, Sidney, British Columbia V8L 5V5, 
Canada; telephone +1-250-656-7227; fax +1-250-656-0673; email [email protected]; internet http://www.vikingair.com. You may view this referenced service information at 
the FAA, Transport Standards Branch, 2200 South 216th St., Des Moines, 
WA. For information on the availability of this material at the FAA, 
call 206-231-3195.

Examining the AD Docket

    You may examine the AD docket on the internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2018-
0638; or in person at the Docket Management Facility between 9 a.m. and 
5 p.m., Monday through Friday, except Federal holidays. The AD docket 
contains this NPRM, the regulatory evaluation, any comments received, 
and other information. The street address for the Docket Operations 
office (telephone 800-647-5527) is in the ADDRESSES section. Comments 
will be available in the AD docket shortly after receipt.

FOR FURTHER INFORMATION CONTACT: Andrea Jimenez, Aerospace Engineer, 
Airframe and Mechanical Systems Section, FAA, New York ACO Branch, 1600 
Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 516-228-7330; 
fax 516-794-5531.

SUPPLEMENTARY INFORMATION: 

[[Page 37769]]

Comments Invited

    We invite you to send any written relevant data, views, or 
arguments about this proposal. Send your comments to an address listed 
under the ADDRESSES section. Include ``Docket No. FAA-2018-0638; 
Product Identifier 2018-NM-016-AD'' at the beginning of your comments. 
We specifically invite comments on the overall regulatory, economic, 
environmental, and energy aspects of this proposed AD. We will consider 
all comments received by the closing date and may amend this proposed 
AD based on those comments.
    We will post all comments we receive, without change, to http://www.regulations.gov, including any personal information you provide. We 
will also post a report summarizing each substantive verbal contact we 
receive about this proposed AD.

Discussion

    We issued AD 2013-11-03, Amendment 39-17463 (78 FR 32353, May 30, 
2013) (``AD 2013-11-03''), for certain Viking Air Limited Model CL-215-
1A10 and CL-215-6B11 (CL-215T Variant) airplanes. AD 2013-11-03 
requires repetitive detailed inspections for cracking of the LH and RH 
wing lower skin, and repair if necessary. AD 2013-11-03 resulted from 
reports of a fractured wing lower rear spar cap and reinforcing strap. 
We issued AD 2013-11-03 to detect and correct cracked wing structure, 
which could result in failure of the wing.

Actions Since AD 2013-11-03 Was Issued

    Since we issued AD 2013-11-03, an operator reported damage to the 
wing lower skin and rear spar of an airplane. This damage was noticed 
95 flight hours after an ultrasonic inspection. Further analysis by the 
airplane manufacturer and the FAA has determined that the ultrasonic 
inspection might not have been adequate to detect a crack in the spar 
cap, and there is a need for repetitive eddy current and borescope 
inspections.
    Transport Canada Civil Aviation (TCCA), which is the aviation 
authority for Canada, has issued Canadian Airworthiness Directive, CF-
2013-11R1, dated October 30, 2017 (referred to after this as the 
Mandatory Continuing Airworthiness Information, or ``the MCAI''), to 
correct an unsafe condition for certain Viking Air Limited Model CL-
215-1A10 and CL-215-6B11 (CL-215T Variant) airplanes. The MCAI states:

    While performing modifications on a CL-215-1A10 aeroplane, an 
operator discovered that the wing lower rear spar cap and 
reinforcing strap were fractured at Wing Stations (WS) 49.5 and 50 
respectively and the rear spar web and wing lower skin were also 
cracked. It is suspected that a crack initiated at the wing lower 
spar cap, leading to its failure, the subsequent failure of the 
reinforcing strap and cracking of the spar web and wing lower skin. 
The damage was outside of the area addressed by the repetitive 
ultrasonic inspections required by [Canadian] AD CF-1992-26R2 [which 
corresponds to FAA AD 2012-11-04, Amendment 39-17067 (77 FR 32892, 
June 4, 2012)] and was found 95 hours air time after the last 
ultrasonic inspection.
    Failure and cracking of the above-noted wing structure, if not 
detected, could result in failure of the wing.
    In order to mitigate the unsafe condition, [Canadian] AD CF-
2013-11 [which corresponds to FAA AD 2013-11-03] was released. 
However, further analysis has indicated the need for repetitive eddy 
current and borescope inspections. Therefore, Revision 1 of this 
[Canadian] AD mandates a repetitive detailed inspection of the wing 
lower skin using a borescope, changes the one-time eddy current 
inspection of the lower front and rear spar caps to a repetitive 
inspection and eliminates the one-time detailed inspection with fuel 
bladders removed.
    The requirements of [Canadian] AD CF-1992-26R2 remain 
applicable.

    You may examine the MCAI in the AD docket on the internet at http://www.regulations.gov by searching for and locating Docket No. FAA-2018-
0638.

Related Service Information Under 1 CFR Part 51

    Bombardier has issued Alert Service Bulletin 215-A558, Revision 3, 
dated June 3, 2016. This service information describes procedures for 
detecting cracks using repetitive borescope inspections of the LH and 
RH wing lower skin and repetitive eddy current inspections of the LH 
and RH wing front and rear lower spar caps. This service information is 
reasonably available because the interested parties have access to it 
through their normal course of business or by the means identified in 
the ADDRESSES section.

FAA's Determination and Requirements of This Proposed AD

    This product has been approved by the aviation authority of another 
country, and is approved for operation in the United States. Pursuant 
to our bilateral agreement with the State of Design Authority, we have 
been notified of the unsafe condition described in the MCAI and service 
information referenced above. We are proposing this AD because we 
evaluated all pertinent information and determined an unsafe condition 
exists and is likely to exist or develop on other products of these 
same type designs.

Costs of Compliance

    We estimate that this proposed AD affects 4 airplanes of U.S. 
registry. We estimate the following costs to comply with this proposed 
AD:

                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                             Parts                              Cost on U.S.
              Action                      Labor cost          cost      Cost per product          operators
----------------------------------------------------------------------------------------------------------------
Borescope and eddy current          8 work-hours x $85            $0  $680 per inspection   $2,720 per
 inspections.                        per hour = $680 per               cycle.                inspection cycle.
                                     inspection cycle.
----------------------------------------------------------------------------------------------------------------

    We have received no definitive data that would enable us to provide 
cost estimates for the on-condition actions specified in this proposed 
AD.

Authority for This Rulemaking

    Title 49 of the United States Code specifies the FAA's authority to 
issue rules on aviation safety. Subtitle I, section 106, describes the 
authority of the FAA Administrator. ``Subtitle VII: Aviation 
Programs,'' describes in more detail the scope of the Agency's 
authority.
    We are issuing this rulemaking under the authority described in 
``Subtitle VII, Part A, Subpart III, Section 44701: General 
requirements.'' Under that section, Congress charges the FAA with 
promoting safe flight of civil aircraft in air commerce by prescribing 
regulations for practices, methods, and procedures the Administrator 
finds necessary for safety in air commerce. This regulation is within 
the scope of that authority because it addresses an unsafe condition 
that is likely to exist or develop on products identified in this 
rulemaking action.
    This proposed AD is issued in accordance with authority delegated 
by the Executive Director, Aircraft Certification Service, as 
authorized by

[[Page 37770]]

FAA Order 8000.51C. In accordance with that order, issuance of ADs is 
normally a function of the Compliance and Airworthiness Division, but 
during this transition period, the Executive Director has delegated the 
authority to issue ADs applicable to transport category airplanes to 
the Director of the System Oversight Division.

Regulatory Findings

    We determined that this proposed AD would not have federalism 
implications under Executive Order 13132. This proposed AD would not 
have a substantial direct effect on the States, on the relationship 
between the national Government and the States, or on the distribution 
of power and responsibilities among the various levels of government.
    For the reasons discussed above, I certify this proposed 
regulation:
    1. Is not a ``significant regulatory action'' under Executive Order 
12866,
    2. Is not a ``significant rule'' under the DOT Regulatory Policies 
and Procedures (44 FR 11034, February 26, 1979),
    3. Will not affect intrastate aviation in Alaska, and
    4. Will not have a significant economic impact, positive or 
negative, on a substantial number of small entities under the criteria 
of the Regulatory Flexibility Act.

List of Subjects in 14 CFR Part 39

    Air transportation, Aircraft, Aviation safety, Incorporation by 
reference, Safety.

The Proposed Amendment

    Accordingly, under the authority delegated to me by the 
Administrator, the FAA proposes to amend 14 CFR part 39 as follows:

PART 39--AIRWORTHINESS DIRECTIVES

0
1. The authority citation for part 39 continues to read as follows:

    Authority:  49 U.S.C. 106(g), 40113, 44701.


Sec.  39.13  [Amended]

0
2. The FAA amends Sec.  39.13 by removing Airworthiness Directive (AD) 
2013-11-03, Amendment 39-17463 (78 FR 32353, May 30, 2013), and adding 
the following new AD:

Viking Air Limited (Type Certificate Previously Held by Bombardier, 
Inc.; Canadair Limited): Docket No. FAA-2018-0638; Product 
Identifier 2018-NM-016-AD.

(a) Comments Due Date

    We must receive comments by September 17, 2018.

(b) Affected ADs

    This AD replaces AD 2013-11-03, Amendment 39-17463 (78 FR 32353, 
May 30, 2013) (``AD 2013-11-03'').

(c) Applicability

    This AD applies to the Viking Air Limited (Type Certificate 
previously held by Bombardier, Inc.; Canadair Limited) airplanes 
identified in paragraphs (c)(1) and (c)(2) of this AD, certificated 
in any category.
    (1) Model CL-215-1A10 airplanes, serial numbers (S/Ns) 1001 
through 1125 inclusive.
    (2) Model CL-215-6B11 (CL-215T Variant) airplanes, S/Ns 1056 
through 1125 inclusive.

(d) Subject

    Air Transport Association (ATA) of America Code 57, Wings.

(e) Reason

    This AD was prompted by reports of cracking of the wing lower 
skin and rear spar. We are issuing this AD to address cracked wing 
structure, which could result in failure of the wing.

(f) Compliance

    Comply with this AD within the compliance times specified, 
unless already done.

(g) Repetitive Borescope Inspection

    Within 50 flight hours after the effective date of this AD: 
Using a borescope, do a detailed inspection for cracking of the 
left-hand (LH) and right-hand (RH) wing lower skin between wing 
station (WS) 45.00 and 51.00, in accordance with Part A of 
Bombardier Alert Service Bulletin 215-A558, Revision 3, dated June 
3, 2016. Repeat the inspection thereafter at intervals not to exceed 
50 flight hours until the initial eddy current inspection required 
by paragraph (h) of this AD has been accomplished. After 
accomplishment of the initial eddy current inspection required by 
paragraph (h) of this AD, the borescope inspection interval required 
by this paragraph may be extended to 300 flight hours.

(h) Repetitive Eddy Current Inspections

    Within 300 flight hours after the effective date of this AD: Do 
an eddy current inspection for cracking of the LH and RH wing front 
and rear lower spar caps, in accordance with Parts C-1 and C-2 of 
Bombardier Alert Service Bulletin 215-A558, Revision 3, dated June 
3, 2016. Repeat the inspection thereafter at intervals not to exceed 
300 flight hours.

(i) Corrective Actions

    If any crack, as defined in Bombardier Alert Service Bulletin 
215-A558, Revision 3, dated June 3, 2016, is found during any 
inspection required by paragraph (g) or paragraph (h) of this AD: 
Before further flight, repair using a method approved by the FAA; or 
Transport Canada Civil Aviation (TCCA); or Viking Air Limited's TCCA 
Design Approval Organization (DAO). If approved by the DAO, the 
approval must include the DAO-authorized signature.

(j) Credit for Previous Actions

    This paragraph provides credit for the initial inspections 
required by paragraphs (g) and (h) of this AD if those actions were 
performed before the effective date of this AD using Bombardier 
Alert Service Bulletin 215-A558, Revision 1, dated January 10, 2014; 
or Bombardier Alert Service Bulletin 215-A558, Revision 2, dated 
January 17, 2014.

(k) No Reporting Requirement

    Although Bombardier Alert Service Bulletin 215-A558, Revision 3, 
dated June 3, 2016, specifies to submit certain information to the 
manufacturer, this AD does not include that requirement.

(l) Other FAA AD Provisions

    (1) Alternative Methods of Compliance (AMOCs): The Manager, New 
York ACO Branch, FAA, has the authority to approve AMOCs for this 
AD, if requested using the procedures found in 14 CFR 39.19. In 
accordance with 14 CFR 39.19, send your request to your principal 
inspector or local Flight Standards District Office, as appropriate. 
If sending information directly to the manager of the certification 
office, send it to ATTN: Program Manager, Continuing Operational 
Safety, FAA, New York ACO Branch.
    (2) Contacting the Manufacturer: For any requirement in this AD 
to obtain corrective actions from a manufacturer, the action must be 
accomplished using a method approved by the Manager, New York ACO 
Branch, FAA; or TCCA; or Viking Air Limited's TCCA DAO. If approved 
by the DAO, the approval must include the DAO-authorized signature.

(m) Related Information

    (1) Refer to Mandatory Continuing Airworthiness Information 
(MCAI) Canadian Airworthiness Directive CF-2013-11R1, dated October 
30, 2017, for related information. This MCAI may be found in the AD 
docket on the internet at http://www.regulations.gov by searching 
for and locating Docket No. FAA-2018-0638.
    (2) For more information about this AD, contact Andrea Jimenez, 
Aerospace Engineer, Airframe and Mechanical Systems Section, FAA, 
New York ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 
11590; telephone 516-228-7330; fax 516-794-5531.
    (3) For service information identified in this AD, contact 
Viking Air Limited, 1959 de Havilland Way, Sidney, British Columbia 
V8L 5V5, Canada; telephone +1-250-656-7227; fax +1-250-656-0673; 
email [email protected]; internet http://www.vikingair.com. You may view this service information at the FAA, 
Transport Standards Branch, 2200 South 216th St., Des Moines, WA. 
For information on the availability of this material at the FAA, 
call 206-231-3195.

    Issued in Des Moines, Washington, on July 23, 2018.
James Cashdollar,
Acting Director, System Oversight Division, Aircraft Certification 
Service.
[FR Doc. 2018-16490 Filed 8-1-18; 8:45 am]
BILLING CODE 4910-13-P



                                                 37768                  Federal Register / Vol. 83, No. 149 / Thursday, August 2, 2018 / Proposed Rules

                                                 (d) Subject                                             (i) Related Information                               current and borescope inspections. This
                                                   Air Transport Association (ATA) of                       (1) Refer to Mandatory Continuing                  proposed AD would require repetitive
                                                 America Code 38, Water/waste.                           Airworthiness Information (MCAI) EASA                 borescope inspections of the LH and RH
                                                                                                         Airworthiness Directive 2018–0111R1, dated            wing lower skin and repetitive eddy
                                                 (e) Reason
                                                                                                         May 30, 2018, for related information. This           current inspections of the LH and RH
                                                    This AD was prompted by leakage of                   MCAI may be found in the AD docket on the             wing front and rear lower spar caps. We
                                                 shrouded pipe T-boxes in the potable water              internet at http://www.regulations.gov by
                                                 system. We are issuing this AD to address the                                                                 are proposing this AD to address the
                                                                                                         searching for and locating Docket No. FAA–
                                                 possible leakage of water into the avionics             2018–0637.                                            unsafe condition on these products.
                                                 bay. This condition, if not corrected, could               (2) For more information about this AD,            DATES: We must receive comments on
                                                 lead to the loss of systems/equipment located           contact Kathleen Arrigotti, Aerospace                 this proposed AD by September 17,
                                                 inside the avionics bay and possible loss of            Engineer, International Section, Transport            2018.
                                                 control of the airplane.                                Standards Branch, FAA, 2200 South 216th
                                                 (f) Compliance                                          St., Des Moines, WA 98198; telephone and              ADDRESSES:   You may send comments,
                                                                                                         fax 206–231–3218.                                     using the procedures found in 14 CFR
                                                    Comply with this AD within the                          (3) For service information identified in
                                                 compliance times specified, unless already
                                                                                                                                                               11.43 and 11.45, by any of the following
                                                                                                         this AD, contact Airbus SAS, Airworthiness            methods:
                                                 done.                                                   Office—EAL, Rond-Point Emile Dewoitine
                                                                                                         No: 2, 31700 Blagnac Cedex, France;
                                                                                                                                                                 • Federal eRulemaking Portal: Go to
                                                 (g) Required Actions                                                                                          http://www.regulations.gov. Follow the
                                                                                                         telephone +33 5 61 93 36 96; fax +33 5 61
                                                    Within 36 months after the effective date                                                                  instructions for submitting comments.
                                                                                                         93 45 80; email continued-
                                                 of this AD: Replace the affected potable water
                                                                                                         airworthiness.a350@airbus.com; internet                 • Fax: 202–493–2251.
                                                 T-boxes and clamps with new parts in
                                                 accordance with the Accomplishment
                                                                                                         http://www.airbus.com. You may view this                • Mail: U.S. Department of
                                                                                                         service information at the FAA, Transport             Transportation, Docket Operations, M–
                                                 Instructions of Airbus Service Bulletin A350–
                                                                                                         Standards Branch, 2200 South 216th St., Des
                                                 38–P004, dated April 11, 2018.
                                                                                                         Moines, WA. For information on the
                                                                                                                                                               30, West Building Ground Floor, Room
                                                 (h) Other FAA AD Provisions                             availability of this material at the FAA, call        W12–140, 1200 New Jersey Avenue SE,
                                                                                                         206–231–3195.                                         Washington, DC 20590.
                                                   The following provisions also apply to this
                                                 AD:
                                                                                                                                                                 • Hand Delivery: Deliver to Mail
                                                                                                           Issued in Des Moines, Washington, on July           address above between 9 a.m. and 5
                                                   (1) Alternative Methods of Compliance
                                                                                                         23, 2018.                                             p.m., Monday through Friday, except
                                                 (AMOCs): The Manager, International
                                                 Section, Transport Standards Branch, FAA,               James Cashdollar,                                     Federal holidays.
                                                 has the authority to approve AMOCs for this             Acting Director, System Oversight Division,             For service information identified in
                                                 AD, if requested using the procedures found             Aircraft Certification Service.                       this NPRM, contact Viking Air Limited,
                                                 in 14 CFR 39.19. In accordance with 14 CFR              [FR Doc. 2018–16488 Filed 8–1–18; 8:45 am]            1959 de Havilland Way, Sidney, British
                                                 39.19, send your request to your principal              BILLING CODE 4910–13–P                                Columbia V8L 5V5, Canada; telephone
                                                 inspector or local Flight Standards District
                                                 Office, as appropriate. If sending information                                                                +1–250–656–7227; fax +1–250–656–
                                                 directly to the International Section, send it                                                                0673; email acs-technical.publications@
                                                                                                         DEPARTMENT OF TRANSPORTATION                          vikingair.com; internet http://
                                                 to the attention of the person identified in
                                                 paragraph (i)(2) of this AD. Information may                                                                  www.vikingair.com. You may view this
                                                                                                         Federal Aviation Administration
                                                 be emailed to: 9–ANM–116–AMOC–                                                                                referenced service information at the
                                                 REQUESTS@faa.gov. Before using any                                                                            FAA, Transport Standards Branch, 2200
                                                 approved AMOC, notify your appropriate                  14 CFR Part 39
                                                                                                                                                               South 216th St., Des Moines, WA. For
                                                 principal inspector, or lacking a principal             [Docket No. FAA–2018–0638; Product                    information on the availability of this
                                                 inspector, the manager of the local flight              Identifier 2018–NM–016–AD]                            material at the FAA, call 206–231–3195.
                                                 standards district office/certificate holding
                                                 district office.                                        RIN 2120–AA64                                         Examining the AD Docket
                                                   (2) Contacting the Manufacturer: For any
                                                 requirement in this AD to obtain corrective             Airworthiness Directives; Viking Air                    You may examine the AD docket on
                                                 actions from a manufacturer, the action must            Limited (Type Certificate Previously                  the internet at http://
                                                 be accomplished using a method approved                 Held by Bombardier, Inc.; Canadair                    www.regulations.gov by searching for
                                                 by the Manager, International Section,                  Limited) Airplanes                                    and locating Docket No. FAA–2018–
                                                 Transport Standards Branch, FAA; or the                                                                       0638; or in person at the Docket
                                                 European Aviation Safety Agency (EASA); or              AGENCY: Federal Aviation                              Management Facility between 9 a.m.
                                                 Airbus SAS’s EASA Design Organization                   Administration (FAA), DOT.                            and 5 p.m., Monday through Friday,
                                                 Approval (DOA). If approved by the DOA,
                                                                                                         ACTION: Notice of proposed rulemaking                 except Federal holidays. The AD docket
                                                 the approval must include the DOA-
                                                 authorized signature.                                   (NPRM).                                               contains this NPRM, the regulatory
                                                   (3) Required for Compliance (RC): If any                                                                    evaluation, any comments received, and
                                                 service information contains procedures or              SUMMARY:   We propose to supersede                    other information. The street address for
                                                 tests that are identified as RC, those                  Airworthiness Directive (AD) 2013–11–                 the Docket Operations office (telephone
                                                 procedures and tests must be done to comply             03, which applies to certain Viking Air               800–647–5527) is in the ADDRESSES
                                                 with this AD; any procedures or tests that are          Limited Model CL–215–1A10 and CL–                     section. Comments will be available in
                                                 not identified as RC are recommended. Those             215–6B11 (CL–215T Variant) airplanes.                 the AD docket shortly after receipt.
                                                 procedures and tests that are not identified            AD 2013–11–03 requires repetitive
daltland on DSKBBV9HB2PROD with PROPOSALS




                                                 as RC may be deviated from using accepted               detailed inspections for cracking of the              FOR FURTHER INFORMATION CONTACT:
                                                 methods in accordance with the operator’s               left-hand (LH) and right-hand (RH) wing               Andrea Jimenez, Aerospace Engineer,
                                                 maintenance or inspection program without                                                                     Airframe and Mechanical Systems
                                                                                                         lower skin, and repair if necessary. AD
                                                 obtaining approval of an AMOC, provided                                                                       Section, FAA, New York ACO Branch,
                                                 the procedures and tests identified as RC can           2013–11–03 was prompted by reports of
                                                                                                         a fractured wing lower rear spar cap and              1600 Stewart Avenue, Suite 410,
                                                 be done and the airplane can be put back in                                                                   Westbury, NY 11590; telephone 516–
                                                 an airworthy condition. Any substitutions or            reinforcing strap. Since we issued AD
                                                 changes to procedures or tests identified as            2013–11–03, further analysis has                      228–7330; fax 516–794–5531.
                                                 RC require approval of an AMOC.                         indicated the need for repetitive eddy                SUPPLEMENTARY INFORMATION:



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                                                                           Federal Register / Vol. 83, No. 149 / Thursday, August 2, 2018 / Proposed Rules                                               37769

                                                 Comments Invited                                          ultrasonic inspection might not have                    The requirements of [Canadian] AD CF–
                                                                                                           been adequate to detect a crack in the                1992–26R2 remain applicable.
                                                   We invite you to send any written
                                                 relevant data, views, or arguments about                  spar cap, and there is a need for
                                                                                                           repetitive eddy current and borescope                   You may examine the MCAI in the
                                                 this proposal. Send your comments to                                                                            AD docket on the internet at http://
                                                 an address listed under the ADDRESSES                     inspections.
                                                                                                             Transport Canada Civil Aviation                     www.regulations.gov by searching for
                                                 section. Include ‘‘Docket No. FAA–                                                                              and locating Docket No. FAA–2018–
                                                 2018–0638; Product Identifier 2018–                       (TCCA), which is the aviation authority
                                                                                                           for Canada, has issued Canadian                       0638.
                                                 NM–016–AD’’ at the beginning of your
                                                 comments. We specifically invite                          Airworthiness Directive, CF–2013–                     Related Service Information Under 1
                                                 comments on the overall regulatory,                       11R1, dated October 30, 2017 (referred                CFR Part 51
                                                 economic, environmental, and energy                       to after this as the Mandatory
                                                 aspects of this proposed AD. We will                      Continuing Airworthiness Information,                   Bombardier has issued Alert Service
                                                 consider all comments received by the                     or ‘‘the MCAI’’), to correct an unsafe                Bulletin 215–A558, Revision 3, dated
                                                 closing date and may amend this                           condition for certain Viking Air Limited              June 3, 2016. This service information
                                                 proposed AD based on those comments.                      Model CL–215–1A10 and CL–215–6B11                     describes procedures for detecting
                                                   We will post all comments we                            (CL–215T Variant) airplanes. The MCAI                 cracks using repetitive borescope
                                                 receive, without change, to http://                       states:                                               inspections of the LH and RH wing
                                                 www.regulations.gov, including any                           While performing modifications on a CL–            lower skin and repetitive eddy current
                                                 personal information you provide. We                      215–1A10 aeroplane, an operator discovered            inspections of the LH and RH wing front
                                                 will also post a report summarizing each                  that the wing lower rear spar cap and                 and rear lower spar caps. This service
                                                 substantive verbal contact we receive                     reinforcing strap were fractured at Wing              information is reasonably available
                                                 about this proposed AD.                                   Stations (WS) 49.5 and 50 respectively and            because the interested parties have
                                                                                                           the rear spar web and wing lower skin were            access to it through their normal course
                                                 Discussion                                                also cracked. It is suspected that a crack            of business or by the means identified
                                                                                                           initiated at the wing lower spar cap, leading
                                                    We issued AD 2013–11–03,                                                                                     in the ADDRESSES section.
                                                                                                           to its failure, the subsequent failure of the
                                                 Amendment 39–17463 (78 FR 32353,                          reinforcing strap and cracking of the spar
                                                 May 30, 2013) (‘‘AD 2013–11–03’’), for                                                                          FAA’s Determination and Requirements
                                                                                                           web and wing lower skin. The damage was
                                                 certain Viking Air Limited Model CL–                                                                            of This Proposed AD
                                                                                                           outside of the area addressed by the
                                                 215–1A10 and CL–215–6B11 (CL–215T                         repetitive ultrasonic inspections required by           This product has been approved by
                                                 Variant) airplanes. AD 2013–11–03                         [Canadian] AD CF–1992–26R2 [which
                                                                                                                                                                 the aviation authority of another
                                                 requires repetitive detailed inspections                  corresponds to FAA AD 2012–11–04,
                                                                                                           Amendment 39–17067 (77 FR 32892, June 4,              country, and is approved for operation
                                                 for cracking of the LH and RH wing
                                                                                                           2012)] and was found 95 hours air time after          in the United States. Pursuant to our
                                                 lower skin, and repair if necessary. AD
                                                                                                           the last ultrasonic inspection.                       bilateral agreement with the State of
                                                 2013–11–03 resulted from reports of a
                                                                                                              Failure and cracking of the above-noted            Design Authority, we have been notified
                                                 fractured wing lower rear spar cap and                    wing structure, if not detected, could result         of the unsafe condition described in the
                                                 reinforcing strap. We issued AD 2013–                     in failure of the wing.                               MCAI and service information
                                                 11–03 to detect and correct cracked                          In order to mitigate the unsafe condition,         referenced above. We are proposing this
                                                 wing structure, which could result in                     [Canadian] AD CF–2013–11 [which
                                                                                                                                                                 AD because we evaluated all pertinent
                                                 failure of the wing.                                      corresponds to FAA AD 2013–11–03] was
                                                                                                           released. However, further analysis has               information and determined an unsafe
                                                 Actions Since AD 2013–11–03 Was                           indicated the need for repetitive eddy current        condition exists and is likely to exist or
                                                 Issued                                                    and borescope inspections. Therefore,                 develop on other products of these same
                                                    Since we issued AD 2013–11–03, an                      Revision 1 of this [Canadian] AD mandates             type designs.
                                                                                                           a repetitive detailed inspection of the wing
                                                 operator reported damage to the wing                                                                            Costs of Compliance
                                                                                                           lower skin using a borescope, changes the
                                                 lower skin and rear spar of an airplane.                  one-time eddy current inspection of the
                                                 This damage was noticed 95 flight hours                   lower front and rear spar caps to a repetitive           We estimate that this proposed AD
                                                 after an ultrasonic inspection. Further                   inspection and eliminates the one-time                affects 4 airplanes of U.S. registry. We
                                                 analysis by the airplane manufacturer                     detailed inspection with fuel bladders                estimate the following costs to comply
                                                 and the FAA has determined that the                       removed.                                              with this proposed AD:

                                                                                                                        ESTIMATED COSTS
                                                                  Action                              Labor cost                Parts cost             Cost per product                Cost on U.S. operators

                                                 Borescope and eddy current in-           8 work-hours × $85 per hour =                  $0   $680 per inspection cycle ........   $2,720 per inspection cycle.
                                                   spections.                               $680 per inspection cycle.



                                                   We have received no definitive data                     Aviation Programs,’’ describes in more                the Administrator finds necessary for
                                                 that would enable us to provide cost                      detail the scope of the Agency’s                      safety in air commerce. This regulation
                                                 estimates for the on-condition actions                    authority.                                            is within the scope of that authority
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                                                 specified in this proposed AD.                              We are issuing this rulemaking under                because it addresses an unsafe condition
                                                                                                           the authority described in ‘‘Subtitle VII,            that is likely to exist or develop on
                                                 Authority for This Rulemaking
                                                                                                           Part A, Subpart III, Section 44701:                   products identified in this rulemaking
                                                   Title 49 of the United States Code                      General requirements.’’ Under that                    action.
                                                 specifies the FAA’s authority to issue                    section, Congress charges the FAA with                   This proposed AD is issued in
                                                 rules on aviation safety. Subtitle I,                     promoting safe flight of civil aircraft in            accordance with authority delegated by
                                                 section 106, describes the authority of                   air commerce by prescribing regulations               the Executive Director, Aircraft
                                                 the FAA Administrator. ‘‘Subtitle VII:                    for practices, methods, and procedures                Certification Service, as authorized by


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                                                 37770                  Federal Register / Vol. 83, No. 149 / Thursday, August 2, 2018 / Proposed Rules

                                                 FAA Order 8000.51C. In accordance                       (b) Affected ADs                                      (j) Credit for Previous Actions
                                                 with that order, issuance of ADs is                       This AD replaces AD 2013–11–03,                       This paragraph provides credit for the
                                                 normally a function of the Compliance                   Amendment 39–17463 (78 FR 32353, May 30,              initial inspections required by paragraphs (g)
                                                 and Airworthiness Division, but during                  2013) (‘‘AD 2013–11–03’’).                            and (h) of this AD if those actions were
                                                 this transition period, the Executive                                                                         performed before the effective date of this AD
                                                                                                         (c) Applicability                                     using Bombardier Alert Service Bulletin 215–
                                                 Director has delegated the authority to
                                                 issue ADs applicable to transport                          This AD applies to the Viking Air Limited          A558, Revision 1, dated January 10, 2014; or
                                                                                                         (Type Certificate previously held by                  Bombardier Alert Service Bulletin 215–A558,
                                                 category airplanes to the Director of the
                                                                                                         Bombardier, Inc.; Canadair Limited)                   Revision 2, dated January 17, 2014.
                                                 System Oversight Division.
                                                                                                         airplanes identified in paragraphs (c)(1) and
                                                                                                                                                               (k) No Reporting Requirement
                                                 Regulatory Findings                                     (c)(2) of this AD, certificated in any category.
                                                                                                            (1) Model CL–215–1A10 airplanes, serial              Although Bombardier Alert Service
                                                   We determined that this proposed AD                   numbers (S/Ns) 1001 through 1125 inclusive.           Bulletin 215–A558, Revision 3, dated June 3,
                                                 would not have federalism implications                     (2) Model CL–215–6B11 (CL–215T Variant)            2016, specifies to submit certain information
                                                 under Executive Order 13132. This                       airplanes, S/Ns 1056 through 1125 inclusive.          to the manufacturer, this AD does not
                                                 proposed AD would not have a                                                                                  include that requirement.
                                                 substantial direct effect on the States, on             (d) Subject
                                                                                                                                                               (l) Other FAA AD Provisions
                                                 the relationship between the national                    Air Transport Association (ATA) of
                                                                                                         America Code 57, Wings.                                 (1) Alternative Methods of Compliance
                                                 Government and the States, or on the                                                                          (AMOCs): The Manager, New York ACO
                                                 distribution of power and                               (e) Reason                                            Branch, FAA, has the authority to approve
                                                 responsibilities among the various                        This AD was prompted by reports of                  AMOCs for this AD, if requested using the
                                                 levels of government.                                   cracking of the wing lower skin and rear spar.        procedures found in 14 CFR 39.19. In
                                                   For the reasons discussed above, I                    We are issuing this AD to address cracked             accordance with 14 CFR 39.19, send your
                                                 certify this proposed regulation:                       wing structure, which could result in failure         request to your principal inspector or local
                                                   1. Is not a ‘‘significant regulatory                  of the wing.                                          Flight Standards District Office, as
                                                 action’’ under Executive Order 12866,                                                                         appropriate. If sending information directly
                                                                                                         (f) Compliance                                        to the manager of the certification office,
                                                   2. Is not a ‘‘significant rule’’ under the                                                                  send it to ATTN: Program Manager,
                                                 DOT Regulatory Policies and Procedures                    Comply with this AD within the
                                                                                                         compliance times specified, unless already            Continuing Operational Safety, FAA, New
                                                 (44 FR 11034, February 26, 1979),                                                                             York ACO Branch.
                                                                                                         done.
                                                   3. Will not affect intrastate aviation in                                                                     (2) Contacting the Manufacturer: For any
                                                 Alaska, and                                             (g) Repetitive Borescope Inspection                   requirement in this AD to obtain corrective
                                                   4. Will not have a significant                          Within 50 flight hours after the effective          actions from a manufacturer, the action must
                                                 economic impact, positive or negative,                  date of this AD: Using a borescope, do a              be accomplished using a method approved
                                                 on a substantial number of small entities               detailed inspection for cracking of the left-         by the Manager, New York ACO Branch,
                                                 under the criteria of the Regulatory                    hand (LH) and right-hand (RH) wing lower              FAA; or TCCA; or Viking Air Limited’s TCCA
                                                                                                         skin between wing station (WS) 45.00 and              DAO. If approved by the DAO, the approval
                                                 Flexibility Act.                                                                                              must include the DAO-authorized signature.
                                                                                                         51.00, in accordance with Part A of
                                                 List of Subjects in 14 CFR Part 39                      Bombardier Alert Service Bulletin 215–A558,           (m) Related Information
                                                   Air transportation, Aircraft, Aviation                Revision 3, dated June 3, 2016. Repeat the
                                                                                                                                                                  (1) Refer to Mandatory Continuing
                                                 safety, Incorporation by reference,                     inspection thereafter at intervals not to             Airworthiness Information (MCAI) Canadian
                                                                                                         exceed 50 flight hours until the initial eddy
                                                 Safety.                                                                                                       Airworthiness Directive CF–2013–11R1,
                                                                                                         current inspection required by paragraph (h)          dated October 30, 2017, for related
                                                 The Proposed Amendment                                  of this AD has been accomplished. After               information. This MCAI may be found in the
                                                                                                         accomplishment of the initial eddy current            AD docket on the internet at http://
                                                   Accordingly, under the authority                      inspection required by paragraph (h) of this          www.regulations.gov by searching for and
                                                 delegated to me by the Administrator,                   AD, the borescope inspection interval                 locating Docket No. FAA–2018–0638.
                                                 the FAA proposes to amend 14 CFR part                   required by this paragraph may be extended               (2) For more information about this AD,
                                                 39 as follows:                                          to 300 flight hours.                                  contact Andrea Jimenez, Aerospace Engineer,
                                                                                                         (h) Repetitive Eddy Current Inspections               Airframe and Mechanical Systems Section,
                                                 PART 39—AIRWORTHINESS                                                                                         FAA, New York ACO Branch, 1600 Stewart
                                                 DIRECTIVES                                                Within 300 flight hours after the effective         Avenue, Suite 410, Westbury, NY 11590;
                                                                                                         date of this AD: Do an eddy current                   telephone 516–228–7330; fax 516–794–5531.
                                                 ■ 1. The authority citation for part 39                 inspection for cracking of the LH and RH                 (3) For service information identified in
                                                 continues to read as follows:                           wing front and rear lower spar caps, in               this AD, contact Viking Air Limited, 1959 de
                                                                                                         accordance with Parts C–1 and C–2 of                  Havilland Way, Sidney, British Columbia
                                                     Authority: 49 U.S.C. 106(g), 40113, 44701.
                                                                                                         Bombardier Alert Service Bulletin 215–A558,           V8L 5V5, Canada; telephone +1–250–656–
                                                 § 39.13   [Amended]                                     Revision 3, dated June 3, 2016. Repeat the            7227; fax +1–250–656–0673; email acs-
                                                                                                         inspection thereafter at intervals not to             technical.publications@vikingair.com;
                                                 ■ 2. The FAA amends § 39.13 by                                                                                internet http://www.vikingair.com. You may
                                                                                                         exceed 300 flight hours.
                                                 removing Airworthiness Directive (AD)                                                                         view this service information at the FAA,
                                                 2013–11–03, Amendment 39–17463 (78                      (i) Corrective Actions                                Transport Standards Branch, 2200 South
                                                 FR 32353, May 30, 2013), and adding                        If any crack, as defined in Bombardier             216th St., Des Moines, WA. For information
                                                 the following new AD:                                   Alert Service Bulletin 215–A558, Revision 3,          on the availability of this material at the
                                                                                                                                                               FAA, call 206–231–3195.
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                                                 Viking Air Limited (Type Certificate                    dated June 3, 2016, is found during any
                                                     Previously Held by Bombardier, Inc.;                inspection required by paragraph (g) or                 Issued in Des Moines, Washington, on July
                                                     Canadair Limited): Docket No. FAA–                  paragraph (h) of this AD: Before further              23, 2018.
                                                     2018–0638; Product Identifier 2018–                 flight, repair using a method approved by the
                                                                                                                                                               James Cashdollar,
                                                     NM–016–AD.                                          FAA; or Transport Canada Civil Aviation
                                                                                                         (TCCA); or Viking Air Limited’s TCCA                  Acting Director, System Oversight Division,
                                                 (a) Comments Due Date                                   Design Approval Organization (DAO). If                Aircraft Certification Service.
                                                   We must receive comments by September                 approved by the DAO, the approval must                [FR Doc. 2018–16490 Filed 8–1–18; 8:45 am]
                                                 17, 2018.                                               include the DAO-authorized signature.                 BILLING CODE 4910–13–P




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Document Created: 2018-08-02 01:28:55
Document Modified: 2018-08-02 01:28:55
CategoryRegulatory Information
CollectionFederal Register
sudoc ClassAE 2.7:
GS 4.107:
AE 2.106:
PublisherOffice of the Federal Register, National Archives and Records Administration
SectionProposed Rules
ActionNotice of proposed rulemaking (NPRM).
DatesWe must receive comments on this proposed AD by September 17, 2018.
ContactAndrea Jimenez, Aerospace Engineer, Airframe and Mechanical Systems Section, FAA, New York ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 516-228-7330; fax 516-794-5531.
FR Citation83 FR 37768 
RIN Number2120-AA64
CFR AssociatedAir Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety

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