83 FR 24694 - Airworthiness Directives; Bombardier, Inc., Airplanes

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration

Federal Register Volume 83, Issue 104 (May 30, 2018)

Page Range		24694-24696
FR Document		2018-11430

We propose to adopt a new airworthiness directive (AD) for certain Bombardier, Inc., Model DHC-8-400 series airplanes. This proposed AD was prompted by reports of the nose landing gear (NLG) locking in a partially extended position due to loose bushings on the lock link of the NLG locking mechanism. This proposed AD would require inspecting the bushings and the lower lock link of the NLG for discrepancies, and corrective actions if necessary. We are proposing this AD to address the unsafe condition on these products.

Federal Register, Volume 83 Issue 104 (Wednesday, May 30, 2018)

[Federal Register Volume 83, Number 104 (Wednesday, May 30, 2018)]
[Proposed Rules]
[Pages 24694-24696]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2018-11430]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2018-0453; Product Identifier 2018-NM-028-AD]
RIN 2120-AA64


Airworthiness Directives; Bombardier, Inc., Airplanes

AGENCY: Federal Aviation Administration (FAA), DOT.

ACTION: Notice of proposed rulemaking (NPRM).

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SUMMARY: We propose to adopt a new airworthiness directive (AD) for 
certain Bombardier, Inc., Model DHC-8-400 series airplanes. This 
proposed AD was prompted by reports of the nose landing gear (NLG) 
locking in a partially extended position due to loose bushings on the 
lock link of the NLG locking mechanism. This proposed AD would require 
inspecting the bushings and the lower lock link of the NLG for 
discrepancies, and corrective actions if necessary. We are proposing 
this AD to address the unsafe condition on these products.

DATES: We must receive comments on this proposed AD by July 16, 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 
Bombardier, Inc., Q-Series Technical Help Desk, 123 Garratt Boulevard, 
Toronto, Ontario M3K 1Y5, Canada; telephone: 416-375-4000; fax: 416-
375-4539; email: [email protected]; internet: http://www.bombardier.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.

Examining the AD Docket

    You may examine the AD docket on the internet at http://

[[Page 24695]]

www.regulations.gov by searching for and locating Docket No. FAA-2018-
0453; 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: Cesar Gomez, Aerospace Engineer, 
Airframe and Mechanical Systems Section, New York ACO Branch, FAA, 1600 
Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 516-228-7318; 
fax 516-794-5531.

SUPPLEMENTARY INFORMATION:

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-2018-0453; 
Product Identifier 2018-NM-028-AD'' at the beginning of your comments. 
We specifically invite comments on the overall regulatory, economic, 
environmental, and energy aspects of this NPRM. We will consider all 
comments received by the closing date and may amend this NPRM 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 NPRM.

Discussion

    Transport Canada Civil Aviation (TCCA), which is the aviation 
authority for Canada, has issued Canadian AD CF-2018-01, dated January 
24, 2018 (referred to after this as the Mandatory Continuing 
Airworthiness Information, or ``the MCAI''), to correct an unsafe 
condition for certain Bombardier, Inc., Model DHC-8-400 series 
airplanes. The MCAI states:

    A landing incident took place whereby the aeroplane's nose 
landing gear (NLG) was locked in a partially-extended position, 
leading to gear collapse upon NLG touch down. The investigation 
revealed that the NLG was locked in this position due to the 
bushings on the lock link of the NLG locking mechanism becoming 
loose. This condition was present due to insufficient interference 
fit which resulted in some bushing outer diameter wear and fretting. 
A dislodged bushing will also cause the bushing sealant to break. 
Broken sealant allows moisture ingress and corrosion that can 
accelerate free play buildup. Excessive free play at the lock link 
can result in the inability to fully retract or deploy the NLG, 
resulting in a risk of NLG collapse on landing.
    Bombardier Inc. has developed an inspection to identify and 
correct this condition. This [Canadian] AD requires a repetitive 
inspection and corrective actions based on the inspection findings.

    Discrepancies include any signs of migration of the bushings, 
broken or missing edge sealant, diagonal paint cracks on the sealant, 
and paint stripe misalignment. 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-2018-0453.

Related Service Information Under 1 CFR Part 51

    Bombardier has issued Service Bulletin 84-32-153, dated September 
22, 2017. The service information describes procedures for a visual 
inspection of the bushings and the lower lock link of the NLG for 
discrepancies. The service bulletin also describes procedures for 
repair or replacement of the lock link if any discrepancy is found. 
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 the same 
type design.

Costs of Compliance

    We estimate that this proposed AD affects 82 airplanes of U.S. 
registry.
    We estimate the following costs to comply with this proposed AD:

                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                                                                 Cost on U.S.
             Action                     Labor cost          Parts cost     Cost per product        operators
----------------------------------------------------------------------------------------------------------------
Inspection.....................  2 work-hours x $85 per               $0  $170 per            $13,940 per
                                  hour = $170 per                          inspection 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 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

[[Page 24696]]

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 adding the following new airworthiness 
directive (AD):

Bombardier, Inc.: Docket No. FAA-2018-0453; Product Identifier 2018-
NM-028-AD.

(a) Comments Due Date

    We must receive comments by July 16, 2018.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to Bombardier, Inc., Model DHC-8-400, -401, and 
-402 airplanes, certificated in any category, serial numbers 4001 
and subsequent.

(d) Subject

    Air Transport Association (ATA) of America Code 32, Landing 
gear.

(e) Reason

    This AD was prompted by reports of the nose landing gear (NLG) 
locking in a partially extended position due to loose bushings on 
the lock link of the NLG locking mechanism. We are issuing this AD 
to detect and correct excessive free play at the lock link of the 
NLG locking mechanism, and consequent inability to fully retract or 
deploy the NLG, which could result in collapse of the NLG and affect 
the safe landing of the airplane.

(f) Compliance

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

(g) Repetitive Inspections and Corrective Actions

    Do a general visual inspection of the bushings and the lower 
lock link of the NLG locking mechanism for discrepancies, at the 
applicable time specified in paragraph (g)(1) or (g)(2) of this AD, 
in accordance with the Accomplishment Instructions of Bombardier 
Service Bulletin 84-32-153, dated September 22, 2017. If any 
discrepancy is found, before further flight, repair or replace the 
lower lock link, as applicable. Repeat the inspection thereafter at 
intervals not to exceed 1,600 flight cycles.
    (1) For airplanes on which all NLG lower lock links have 
accumulated 7,200 or fewer total flight cycles as of the effective 
date of this AD: Before the accumulation of 8,000 total flight 
cycles.
    (2) For airplanes on which any NLG lower lock link has 
accumulated more than 7,200 total flight cycles as of the effective 
date of this AD: Within 800 flight cycles after the effective date 
of this AD.

(h) Other FAA AD Provisions

    The following provisions also apply to this AD:
    (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 New York ACO 
Branch, send it to ATTN: Program Manager, Continuing Operational 
Safety, FAA, New York ACO Branch, 1600 Stewart Avenue, Suite 410, 
Westbury, NY 11590; telephone 516-228-7300; fax 516-794-5531. Before 
using any approved AMOC, notify your appropriate principal 
inspector, or lacking a principal inspector, the manager of the 
local flight standards district office/certificate holding district 
office.
    (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 Transport Canada Civil Aviation (TCCA); or TCCA 
Design Approval Organization (DAO). If approved by the DAO, the 
approval must include the DAO-authorized signature.

(i) Related Information

    (1) Refer to Mandatory Continuing Airworthiness Information 
(MCAI) Canadian AD CF-2018-01, dated January 24, 2018, 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-2018-0453.
    (2) For more information about this AD, Cesar Gomez, Aerospace 
Engineer, Airframe and Mechanical Systems Section, New York ACO 
Branch, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; 
telephone 516-228-7318; fax 516-794-5531.
    (3) For service information identified in this AD, contact 
Bombardier, Inc., Q-Series Technical Help Desk, 123 Garratt 
Boulevard, Toronto, Ontario M3K 1Y5, Canada; telephone: 416-375-
4000; fax: 416-375-4539; email: [email protected]; 
internet: http://www.bombardier.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 May 14, 2018.
Michael Kaszycki,
Acting Director, System Oversight Division, Aircraft Certification 
Service.
[FR Doc. 2018-11430 Filed 5-29-18; 8:45 am]
BILLING CODE 4910-13-P

24694 Federal Register / Vol. 83, No. 104 / Wednesday, May 30, 2018 / Proposed Rules

Airbus Service Bulletin A320–53–1071, Office, as appropriate. If sending information DEPARTMENT OF TRANSPORTATION
Revision 03, dated July 20, 2017. Submit the directly to the International Section, send it
report within 30 days after accomplishing the to the attention of the person identified in Federal Aviation Administration
inspection required by paragraph (i) of this paragraph (r)(2) of this AD. Information may
AD. The report must include the inspection be emailed to: 9-ANM-116-AMOC-
results, a description of any discrepancies REQUESTS@faa.gov.
14 CFR Part 39
found, the airplane serial number, and the (i) Before using any approved AMOC, [Docket No. FAA–2018–0453; Product
number of landings and flight hours on the notify your appropriate principal inspector, Identifier 2018–NM–028–AD]
airplane. If operators have reported findings or lacking a principal inspector, the manager
as part of obtaining any corrective actions of the local flight standards district office/ RIN 2120–AA64
approved by the EASA DOA, operators are certificate holding district office.
not required to report those findings as (ii) AMOCs approved previously for AD Airworthiness Directives; Bombardier,
specified in this paragraph. 98–18–24 are approved as AMOCs for the Inc., Airplanes
corresponding provisions of this AD.
(n) Service Information Exception (2) Contacting the Manufacturer: As of the AGENCY: Federal Aviation
Where Airbus Service Bulletin A320–53– effective date of this AD, for any requirement Administration (FAA), DOT.
1071, Revision 03, dated July 20, 2017, in this AD to obtain corrective actions from ACTION: Notice of proposed rulemaking
specifies to contact Airbus for appropriate a manufacturer, the action must be (NPRM).
action, and specifies that action as ‘‘RC’’ accomplished using a method approved by
(Required for Compliance): Before further the Manager, International Section, Transport SUMMARY: We propose to adopt a new
flight, accomplish corrective actions in Standards Branch, FAA; or the EASA; or airworthiness directive (AD) for certain
accordance with the procedures specified in Airbus’s EASA DOA. If approved by the Bombardier, Inc., Model DHC–8–400
paragraph (q)(2) of this AD. DOA, the approval must include the DOA-
authorized signature.
series airplanes. This proposed AD was
(o) Credit for Previous Actions prompted by reports of the nose landing
(3) Required for Compliance (RC): Except
(1) This paragraph provides credit for as required by paragraph (n) of this AD: If gear (NLG) locking in a partially
actions required by paragraph (i) of this AD, any service information contains procedures extended position due to loose bushings
if those actions were performed before the or tests that are identified as RC, those on the lock link of the NLG locking
effective date of this AD using Airbus Service procedures and tests must be done to comply mechanism. This proposed AD would
Bulletin A320–53–1071, Revision 01, dated with this AD; any procedures or tests that are require inspecting the bushings and the
July 4, 2002; or Airbus Service Bulletin not identified as RC are recommended. Those
A320–53–1071, Revision 02, dated May 5, lower lock link of the NLG for
procedures and tests that are not identified
2016. as RC may be deviated from using accepted
discrepancies, and corrective actions if
(2) This paragraph provides credit for methods in accordance with the operator’s necessary. We are proposing this AD to
actions identified in paragraph (l) of this AD, maintenance or inspection program without address the unsafe condition on these
if those actions were performed before the obtaining approval of an AMOC, provided products.
effective date of this AD using Airbus Service the procedures and tests identified as RC can
Bulletin A320–53–1072, dated November 7, DATES: We must receive comments on
be done and the airplane can be put back in
1995, as revised by Change Notice 0A, dated an airworthy condition. Any substitutions or this proposed AD by July 16, 2018.
July 5, 1996; or Airbus Service Bulletin changes to procedures or tests identified as ADDRESSES: You may send comments,
A320–53–1072, Revision 01, dated July 4, RC require approval of an AMOC. using the procedures found in 14 CFR
2002. 11.43 and 11.45, by any of the following
(r) Related Information
(p) Paperwork Reduction Act Burden methods:
(1) Refer to Mandatory Continuing • Federal eRulemaking Portal: Go to
Statement
Airworthiness Information (MCAI) EASA AD
A federal agency may not conduct or 2017–0128, dated July 24, 2017, for related
http://www.regulations.gov. Follow the
sponsor, and a person is not required to information. This MCAI may be found in the instructions for submitting comments.
respond to, nor shall a person be subject to AD docket on the internet at http:// • Fax: 202–493–2251.
a penalty for failure to comply with a www.regulations.gov by searching for and • Mail: U.S. Department of
collection of information subject to the locating Docket No. FAA–2018–0455. Transportation, Docket Operations, M–
requirements of the Paperwork Reduction (2) For more information about this AD, 30, West Building Ground Floor, Room
Act unless that collection of information contact Sanjay Ralhan, Aerospace Engineer, W12–140, 1200 New Jersey Avenue SE,
displays a current valid OMB Control International Section, Transport Standards
Number. The OMB Control Number for this
Washington, DC 20590.
information collection is 2120–0056. Public
Branch, FAA; 2200 South 216th St., Des • Hand Delivery: Deliver to Mail
Moines, WA 98198; telephone and fax 206– address above between 9 a.m. and 5
reporting for this collection of information is 231–3223.
estimated to be approximately 1 hour per (3) For service information identified in
p.m., Monday through Friday, except
response, including the time for reviewing this AD, contact Airbus, Airworthiness Federal holidays.
instructions, completing and reviewing the Office—EIAS, 1 Rond Point Maurice For service information identified in
collection of information. All responses to Bellonte, 31707 Blagnac Cedex, France; this NPRM, contact Bombardier, Inc., Q-
this collection of information are mandatory. telephone +33 5 61 93 36 96; fax +33 5 61 Series Technical Help Desk, 123 Garratt
Comments concerning the accuracy of this 93 44 51; email account.airworth-eas@ Boulevard, Toronto, Ontario M3K 1Y5,
burden and suggestions for reducing the airbus.com; internet http://www.airbus.com.
burden should be directed to the FAA at: 800 Canada; telephone: 416–375–4000; fax:
You may view this service information at the 416–375–4539; email: thd.qseries@
Independence Ave. SW, Washington, DC FAA, Transport Standards Branch, 2200
20591, Attn: Information Collection aero.bombardier.com; internet: http://
South 216th St., Des Moines, WA. For
Clearance Officer, AES–200.
information on the availability of this
www.bombardier.com. You may view
this service information at the FAA,
sradovich on DSK3GMQ082PROD with PROPOSALS

(q) Other FAA AD Provisions material at the FAA, call 206–231–3195.
Transport Standards Branch, 2200
(1) Alternative Methods of Compliance Issued in Des Moines, Washington, on May South 216th St., Des Moines, WA. For
(AMOCs): The Manager, International 21, 2018.
Section, Transport Standards Branch, FAA, information on the availability of this
James Cashdollar, material at the FAA, call 206–231–3195.
has the authority to approve AMOCs for this
Acting Director, System Oversight Division,
AD, if requested using the procedures found Examining the AD Docket
Aircraft Certification Service.
in 14 CFR 39.19. In accordance with 14 CFR
39.19, send your request to your principal [FR Doc. 2018–11421 Filed 5–29–18; 8:45 am] You may examine the AD docket on
inspector or local Flight Standards District BILLING CODE 4910–13–P the internet at http://

VerDate Sep<11>2014 16:20 May 29, 2018 Jkt 244001 PO 00000 Frm 00015 Fmt 4702 Sfmt 4702 E:\FR\FM\30MYP1.SGM 30MYP1

Document Created: 2018-05-30 01:01:39
Document Modified: 2018-05-30 01:01:39

Category		Regulatory Information
Collection		Federal Register
sudoc Class		AE 2.7: GS 4.107: AE 2.106:
Publisher		Office of the Federal Register, National Archives and Records Administration
Section		Proposed Rules
Action		Notice of proposed rulemaking (NPRM).
Dates		We must receive comments on this proposed AD by July 16, 2018.
Contact		Cesar Gomez, Aerospace Engineer, Airframe and Mechanical Systems Section, New York ACO Branch, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 516-228-7318; fax 516-794-5531.
FR Citation		83 FR 24694
RIN Number		2120-AA64
CFR Associated		Air Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety

83 FR 24694 - Airworthiness Directives; Bombardier, Inc., Airplanes

DEPARTMENT OF TRANSPORTATIONFederal Aviation Administration

Federal Register Volume 83, Issue 104 (May 30, 2018)

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration