82_FR_24122 82 FR 24022 - Airworthiness Directives; Bombardier, Inc. Airplanes

82 FR 24022 - Airworthiness Directives; Bombardier, Inc. Airplanes

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration

Federal Register Volume 82, Issue 100 (May 25, 2017)

Page Range24022-24025
FR Document2017-10339

We are adopting a new airworthiness directive (AD) for certain Bombardier, Inc. Model DHC-8-400 series airplanes. This AD was prompted by reports of interruptions in the airstair door operation. This AD requires repetitive inspections and modification of the handrail hardware. We are issuing this AD to address the unsafe condition on these products.

Federal Register, Volume 82 Issue 100 (Thursday, May 25, 2017)
[Federal Register Volume 82, Number 100 (Thursday, May 25, 2017)]
[Rules and Regulations]
[Pages 24022-24025]
From the Federal Register Online  [www.thefederalregister.org]
[FR Doc No: 2017-10339]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2016-9438; Directorate Identifier 2016-NM-109-AD; 
Amendment 39-18873; AD 2017-09-11]
RIN 2120-AA64


Airworthiness Directives; Bombardier, Inc. Airplanes

AGENCY: Federal Aviation Administration (FAA), Department of 
Transportation (DOT).

ACTION: Final rule.

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

SUMMARY: We are adopting a new airworthiness directive (AD) for certain 
Bombardier, Inc. Model DHC-8-400 series airplanes. This AD was prompted 
by reports of interruptions in the airstair door operation. This AD 
requires repetitive inspections and modification of the handrail 
hardware. We are issuing this AD to address the unsafe condition on 
these products.

DATES: This AD is effective June 29, 2017.
    The Director of the Federal Register approved the incorporation by 
reference of a certain publication listed in this AD as of June 29, 
2017.

ADDRESSES: For service information identified in this final rule, 
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 referenced service 
information at the FAA, Transport Airplane Directorate, 1601 Lind 
Avenue SW., Renton, WA. For information on the availability of this 
material at the FAA, call 425-227-1221. It is also available on the 
Internet at http://www.regulations.gov by searching for and locating 
Docket No. FAA-2016-9438.

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-2016-
9438; 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 AD, the regulatory evaluation, any comments received, and 
other information. The street address for the Docket Office (telephone 
800-647-5527) is Docket Management Facility,

[[Page 24023]]

U.S. Department of Transportation, Docket Operations, M-30, West 
Building Ground Floor, Room W12-140, 1200 New Jersey Avenue SE., 
Washington, DC 20590.

FOR FURTHER INFORMATION CONTACT: Cesar A. Gomez, Aerospace Engineer, 
Airframe and Mechanical Systems Branch, ANE-171, FAA, New York Aircraft 
Certification Office (ACO), 1600 Stewart Avenue, Suite 410, Westbury, 
NY 11590; telephone 516-228-7318; fax 516-794-5531.

SUPPLEMENTARY INFORMATION: 

Discussion

    We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR 
part 39 by adding an AD that would apply to certain Bombardier, Inc. 
Model DHC-8-400 series airplanes. The NPRM published in the Federal 
Register on December 16, 2016 (81 FR 91058) (``the NPRM''). The NPRM 
was prompted by reports of interruptions in the airstair door 
operation. The NPRM proposed to require repetitive inspections and 
modification of the handrail hardware. We are issuing this AD to ensure 
the ability to evacuate passengers through the airstair door in the 
event of an emergency.
    Transport Canada Civil Aviation (TCCA), which is the aviation 
authority for Canada, has issued Canadian Airworthiness Directive CF-
2015-02, dated January 27, 2015 (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, -401, and -402 airplanes. The MCAI states:

    A number of airstair door operation interruptions have been 
reported. In one case, the airstair door could not be opened. It was 
found that the airstair door handrail holder bracket was deformed 
and became lodged into the adjacent wardrobe bulkhead, which 
prevented the door from opening.
    On airstair doors with Jetway Compatible option, a deformed 
handrail holder bracket or a failure of the pin retainer bracket can 
interfere with the operation of the airstair door and prevent it 
from opening.
    The airstair door is classified as an emergency exit. The 
inability to open an emergency exit could impede evacuation in the 
event of an emergency.
    This [Canadian] AD mandates the repetitive inspection of 
airstair door handrail hardware, and the modification of the 
handrail stowage hardware.

    Required actions include applicable corrective actions (replacing 
or removing brackets, installing lanyards, adjusting pins, and 
adjusting affected parts of the assembly). 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-2016-9438.

Comments

    We gave the public the opportunity to participate in developing 
this AD. We considered the comment received. The Air Line Pilots 
Association, International supported the NPRM.

Conclusion

    We reviewed the relevant data, considered the comment received, and 
determined that air safety and the public interest require adopting 
this AD as proposed except for minor editorial changes. We have 
determined that these minor changes:
     Are consistent with the intent that was proposed in the 
NPRM for correcting the unsafe condition; and
     Do not add any additional burden upon the public than was 
already proposed in the NPRM.

Related Service Information Under 1 CFR Part 51

    Bombardier, Inc. issued Service Bulletin 84-52-79, Revision C, 
dated February 2, 2016. This service information describes procedures 
for a general visual inspection to detect deformities and cracks of the 
forward and aft handle holder brackets on the airstair handrail; a 
detailed visual inspection of the forward and aft pin retainer brackets 
for the condition of the lanyards and the pins; a check for 
unobstructed movement of the pin retainer brackets; and rework of the 
airstair door handrail to prevent damage to the bulkhead and to prevent 
the door from jamming once the handrails are stowed. 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.

Costs of Compliance

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

                                                 Estimated Costs
----------------------------------------------------------------------------------------------------------------
                                                                                                 Cost on U.S.
             Action                      Labor cost          Parts cost    Cost per product        operators
----------------------------------------------------------------------------------------------------------------
Repetitive inspections..........  1 work-hour x $85 per              $0  $85 per inspection   $6,970 per
                                   hour = $85 per                         cycle.               inspection cycle.
                                   inspection cycle.
Modification....................  3 work-hours x $85 per          1,556  $1,811.............  $148,502.
                                   hour = $255.
----------------------------------------------------------------------------------------------------------------

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

Regulatory Findings

    We determined that this AD will not have federalism implications 
under Executive Order 13132. This AD will 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 that this AD:
    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,

[[Page 24024]]

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.

Adoption of the Amendment

    Accordingly, under the authority delegated to me by the 
Administrator, the FAA amends 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):

2017-09-11 Bombardier, Inc.: Amendment 39-18873; Docket No. FAA-
2016-9438; Directorate Identifier 2016-NM-109-AD.

(a) Effective Date

    This AD is effective June 29, 2017.

(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 
through 4473 inclusive, equipped with Bombardier ModSum 4-422100 or 
ModSum 4-458687 (Jetway Compatible Passenger Airstair Door).

(d) Subject

    Air Transport Association (ATA) of America Code 52, Doors.

(e) Reason

    This AD was prompted by reports of interruptions in the airstair 
door operation, including one case where the door would not open. 
The airstair door is classified as an emergency exit. We are issuing 
this AD to ensure the ability to evacuate passengers through the 
airstair door in the event of an emergency.

(f) Compliance

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

(g) Repetitive Inspections of the Forward and Aft Handle Holder 
Brackets and Forward and Aft Pin Retainer Brackets, Repetitive Checks, 
and Corrective Actions

    Within 600 flight hours after the effective date of this AD, 
perform a general visual inspection of the forward and aft handle 
holder brackets for damage, such as visible cracks and deformation; 
a detailed visual inspection of the forward and aft pin retainer 
brackets to make sure that both lanyards are installed and to make 
sure that the head of each pin is installed correctly; a check of 
the pin retainer brackets for unobstructed movement; an operational 
check of the forward passenger door; and all applicable corrective 
actions; in accordance with PART A1 and PART A2 of the 
Accomplishment Instructions of Bombardier Service Bulletin 84-52-79, 
Revision C, dated February 2, 2016, except as required by paragraphs 
(g)(1), (g)(2), and (g)(3) of this AD. Do all applicable corrective 
actions before further flight. Repeat the inspections and checks 
thereafter at intervals not to exceed 600 flight hours until the 
terminating action required by paragraph (h) of this AD is 
accomplished.
    (1) If one or both lanyards are missing, before further flight, 
install lanyards as specified in, and in accordance with PART A1 of 
the Accomplishment Instructions of Bombardier Service Bulletin 84-
52-79, Revision C, dated February 2, 2016.
    (2) If a pin is not installed correctly, as specified in PART A1 
of the Accomplishment Instructions of Bombardier Service Bulletin 
84-52-79, Revision C, dated February 2, 2016, before further flight, 
adjust the affected pin until it is installed correctly as specified 
in, and in accordance with, PART A1 of the Accomplishment 
Instructions Bombardier Service Bulletin 84-52-79, Revision C, dated 
February 2, 2016.
    (3) If a pin retainer bracket does not rotate freely, before 
further flight, adjust affected parts of the assembly until the pin 
retainer bracket rotates freely as specified in, and in accordance 
with, PART A1 of the Accomplishment Instructions of Bombardier 
Service Bulletin 84-52-79, Revision C, dated February 2, 2016.

(h) Terminating Action

    Within 6,000 flight hours or 36 months, whichever occurs first, 
after the effective date of this AD: Incorporate Bombardier ModSum 
4-903234 to modify the installed jetway compatible handrail stowage 
bracket, in accordance with PART A3 of the Accomplishment 
Instructions of Bombardier Service Bulletin 84-52-79, Revision C, 
dated February 2, 2016. Incorporating Bombardier ModSum 4-903234 
terminates the actions required by paragraph (g) of this AD.

(i) Credit for Previous Actions

    This paragraph provides credit for actions required by paragraph 
(g) of this AD, if those actions were performed before the effective 
date of this AD using the service information identified in 
paragraph (i)(1), (i)(2), or (i)(3) of this AD.
    (1) Bombardier Service Bulletin 84-52-79, dated May 1, 2014.
    (2) Bombardier Service Bulletin 84-52-79, Revision A, dated 
November 18, 2014.
    (3) Bombardier Service Bulletin 84-52-79, Revision B, dated 
April 8, 2015.

(j) Other FAA AD Provisions

    The following provisions also apply to this AD:
    (1) Alternative Methods of Compliance (AMOCs): The Manager, New 
York Aircraft Certification Office (ACO), ANE-170, 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 ACO, send it to the attention of the 
person identified in paragraph (k)(2) of this AD. 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, 
ANE-170, FAA; or Transport Canada Civil Aviation (TCCA); or 
Bombardier, Inc.'s TCCA Design Approval Organization (DAO). If 
approved by the DAO, the approval must include the DAO-authorized 
signature.

(k) Related Information

    (1) Refer to Mandatory Continuing Airworthiness Information 
(MCAI) Canadian A D CF-2015-02, dated January 27, 2015, 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-2016-9438.
    (2) For more information about this AD, contact the Program 
Manager, Continuing Operational Safety, FAA, New York ACO, 1600 
Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 516-228-
7300; fax 516-794-5531.
    (3) Service information identified in this AD that is not 
incorporated by reference is available at the addresses specified in 
paragraphs (l)(3) and (l)(4) of this AD.

(l) Material Incorporated by Reference

    (1) The Director of the Federal Register approved the 
incorporation by reference (IBR) of the service information listed 
in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.
    (2) You must use this service information as applicable to do 
the actions required by this AD, unless this AD specifies otherwise.
    (i) Bombardier Service Bulletin 84-52-79, Revision C, dated 
February 2, 2016.
    (ii) Reserved.
    (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.
    (4) You may view this service information at the FAA, Transport 
Airplane Directorate, 1601 Lind Avenue SW., Renton, WA. For 
information on the availability of this material at the FAA, call 
425-227-1221.
    (5) You may view this service information that is incorporated 
by reference at the National Archives and Records Administration 
(NARA). For information on the availability of this material at 
NARA, call 202-741-6030, or go to: http://www.archives.gov/federal-register/cfr/ibr-locations.html.


[[Page 24025]]


    Issued in Renton, Washington, on April 27, 2017.
Paul Bernado,
Acting Manager, Transport Airplane Directorate, Aircraft Certification 
Service.
[FR Doc. 2017-10339 Filed 5-24-17; 8:45 am]
 BILLING CODE 4910-13-P



     24022              Federal Register / Vol. 82, No. 100 / Thursday, May 25, 2017 / Rules and Regulations

     (b) Affected ADs                                        deviation, or alteration deviation must meet          DEPARTMENT OF TRANSPORTATION
       None.                                                 the certification basis of the airplane, and the
                                                             approval must specifically refer to this AD.          Federal Aviation Administration
     (c) Applicability                                          (4) For service information that contains
        This AD applies to The Boeing Company                steps that are labeled as Required for                14 CFR Part 39
     Model 787–8 and 787–9 airplanes,                        Compliance (RC), the provisions of
     certificated in any category, as identified in          paragraphs (h)(4)(i) and (h)(4)(ii) of this AD        [Docket No. FAA–2016–9438; Directorate
     Boeing Alert Service Bulletin B787–81205–               apply.                                                Identifier 2016–NM–109–AD; Amendment
     SB570029–00, Issue 001, dated February 23,                 (i) The steps labeled as RC, including             39–18873; AD 2017–09–11]
     2016.                                                   substeps under an RC step and any figures
                                                             identified in an RC step, must be done to             RIN 2120–AA64
     (d) Subject
                                                             comply with the AD. If a step or sub-step is
       Air Transport Association (ATA) of                    labeled ‘‘RC Exempt,’’ then the RC
                                                                                                                   Airworthiness Directives; Bombardier,
     America Code 57, Wings.                                 requirement is removed from that step or              Inc. Airplanes
     (e) Unsafe Condition                                    sub-step. An AMOC is required for any                 AGENCY:  Federal Aviation
                                                             deviations to RC steps, including substeps
        This AD was prompted by a report                                                                           Administration (FAA), Department of
                                                             and identified figures.
     indicating that a portion of the sealant above             (ii) Steps not labeled as RC may be                Transportation (DOT).
     the engine pylon between the wing skin and                                                                    ACTION: Final rule.
                                                             deviated from using accepted methods in
     the vapor barrier might have been omitted.
                                                             accordance with the operator’s maintenance
     We are issuing this AD to detect and correct                                                                  SUMMARY:   We are adopting a new
                                                             or inspection program without obtaining
     missing sealant above the engine pylon                                                                        airworthiness directive (AD) for certain
                                                             approval of an AMOC, provided the RC steps,
     between the wing skin and the vapor barrier,
     which can create an unintended leak path for            including substeps and identified figures, can        Bombardier, Inc. Model DHC–8–400
     fuel, potentially draining onto the aft fairing         still be done as specified, and the airplane          series airplanes. This AD was prompted
     heat shield and onto hot engine parts or                can be put back in an airworthy condition.            by reports of interruptions in the airstair
     brakes, which could lead to a major ground              (i) Related Information                               door operation. This AD requires
     fire.
                                                               For more information about this AD,
                                                                                                                   repetitive inspections and modification
     (f) Compliance                                          contact David Lee, Aerospace Engineer,                of the handrail hardware. We are issuing
                                                             Propulsion Branch, ANM–140S, Seattle ACO,             this AD to address the unsafe condition
        Comply with this AD within the
     compliance times specified, unless already              FAA, 1601 Lind Avenue SW., Renton, WA                 on these products.
     done.                                                   98057–3356; phone: 425–917–6501; fax: 425–            DATES: This AD is effective June 29,
                                                             917–6590; email: david.a.lee@faa.gov.                 2017.
     (g) Inspection and Corrective Actions
                                                             (j) Material Incorporated by Reference                   The Director of the Federal Register
        Within 60 months after the effective date                                                                  approved the incorporation by reference
     of this AD: Do a general visual inspection for             (1) The Director of the Federal Register
                                                             approved the incorporation by reference               of a certain publication listed in this AD
     missing sealant in the seam on the outside
     and inside of the engine struts, in accordance          (IBR) of the service information listed in this       as of June 29, 2017.
     with the Accomplishment Instructions of                 paragraph under 5 U.S.C. 552(a) and 1 CFR             ADDRESSES: For service information
     Boeing Alert Service Bulletin B787–81205–               part 51.                                              identified in this final rule, contact
     SB570029–00, Issue 001, dated February 23,                 (2) You must use this service information          Bombardier, Inc., Q-Series Technical
     2016. Do all applicable corrective actions              as applicable to do the actions required by           Help Desk, 123 Garratt Boulevard,
     before further flight, in accordance with the           this AD, unless the AD specifies otherwise.
                                                                                                                   Toronto, Ontario M3K 1Y5, Canada;
     Accomplishment Instructions of Boeing Alert                (i) Boeing Alert Service Bulletin B787–
     Service Bulletin B787–81205–SB570029–00,                81205–SB570029–00, Issue 001, dated                   telephone 416–375–4000; fax 416–375–
     Issue 001, dated February 23, 2016.                     February 23, 2016.                                    4539; email thd.qseries@
                                                                (ii) Reserved.                                     aero.bombardier.com; Internet http://
     (h) Alternative Methods of Compliance                                                                         www.bombardier.com. You may view
                                                                (3) For service information identified in
     (AMOCs)
                                                             this AD, contact Boeing Commercial                    this referenced service information at
        (1) The Manager, Seattle Aircraft                    Airplanes, Attention: Contractual & Data              the FAA, Transport Airplane
     Certification Office (ACO), FAA, has the                Services (C&DS), 2600 Westminster Blvd.,              Directorate, 1601 Lind Avenue SW.,
     authority to approve AMOCs for this AD, if              MC 110–SK57, Seal Beach, CA 90740–5600;
     requested using the procedures found in 14
                                                                                                                   Renton, WA. For information on the
                                                             telephone 562–797–1717; Internet https://             availability of this material at the FAA,
     CFR 39.19. In accordance with 14 CFR 39.19,             www.myboeingfleet.com.
     send your request to your principal inspector                                                                 call 425–227–1221. It is also available
                                                                (4) You may view this service information
     or local Flight Standards District Office, as           at the FAA, Transport Airplane Directorate,           on the Internet at http://
     appropriate. If sending information directly            1601 Lind Avenue SW., Renton, WA. For                 www.regulations.gov by searching for
     to the manager of the ACO, send it to the               information on the availability of this               and locating Docket No. FAA–2016–
     attention of the person identified in                   material at the FAA, call 425–227–1221.               9438.
     paragraph (i) of this AD. Information may be               (5) You may view this service information
     emailed to: 9-ANM-Seattle-ACO-AMOC-
                                                             that is incorporated by reference at the
                                                                                                                   Examining the AD Docket
     Requests@faa.gov.
        (2) Before using any approved AMOC,
                                                             National Archives and Records                           You may examine the AD docket on
                                                             Administration (NARA). For information on             the Internet at http://
     notify your appropriate principal inspector,
                                                             the availability of this material at NARA, call       www.regulations.gov by searching for
     or lacking a principal inspector, the manager
                                                             202–741–6030, or go to: http://                       and locating Docket No. FAA–2016–
     of the local flight standards district office/
                                                             www.archives.gov/federal-register/cfr/ibr-
     certificate holding district office.                                                                          9438; or in person at the Docket
                                                             locations.html.
        (3) An AMOC that provides an acceptable                                                                    Management Facility between 9 a.m.
     level of safety may be used for any repair,               Issued in Renton, Washington, on May 8,             and 5 p.m., Monday through Friday,
     modification, or alteration required by this            2017.                                                 except Federal holidays. The AD docket
     AD if it is approved by the Boeing                      Michael Kaszycki,
     Commercial Airplanes Organization
                                                                                                                   contains this AD, the regulatory
                                                             Acting Manager, Transport Airplane                    evaluation, any comments received, and
     Designation Authorization (ODA) that has
                                                             Directorate, Aircraft Certification Service.          other information. The street address for
     been authorized by the Manager, Seattle
     ACO, to make those findings. To be                      [FR Doc. 2017–10283 Filed 5–24–17; 8:45 am]           the Docket Office (telephone 800–647–
     approved, the repair method, modification               BILLING CODE 4910–13–P                                5527) is Docket Management Facility,


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                           Federal Register / Vol. 82, No. 100 / Thursday, May 25, 2017 / Rules and Regulations                                                        24023

     U.S. Department of Transportation,                          DHC–8–400, –401, and –402 airplanes.                    public interest require adopting this AD
     Docket Operations, M–30, West                               The MCAI states:                                        as proposed except for minor editorial
     Building Ground Floor, Room W12–140,                           A number of airstair door operation                  changes. We have determined that these
     1200 New Jersey Avenue SE.,                                 interruptions have been reported. In one                minor changes:
     Washington, DC 20590.                                       case, the airstair door could not be opened.              • Are consistent with the intent that
                                                                 It was found that the airstair door handrail            was proposed in the NPRM for
     FOR FURTHER INFORMATION CONTACT:
                                                                 holder bracket was deformed and became
     Cesar A. Gomez, Aerospace Engineer,                                                                                 correcting the unsafe condition; and
                                                                 lodged into the adjacent wardrobe bulkhead,
     Airframe and Mechanical Systems                             which prevented the door from opening.                    • Do not add any additional burden
     Branch, ANE–171, FAA, New York                                 On airstair doors with Jetway Compatible             upon the public than was already
     Aircraft Certification Office (ACO), 1600                   option, a deformed handrail holder bracket or           proposed in the NPRM.
     Stewart Avenue, Suite 410, Westbury,                        a failure of the pin retainer bracket can
     NY 11590; telephone 516–228–7318; fax                       interfere with the operation of the airstair            Related Service Information Under 1
     516–794–5531.                                               door and prevent it from opening.                       CFR Part 51
                                                                    The airstair door is classified as an
     SUPPLEMENTARY INFORMATION:                                  emergency exit. The inability to open an                   Bombardier, Inc. issued Service
                                                                 emergency exit could impede evacuation in               Bulletin 84–52–79, Revision C, dated
     Discussion                                                  the event of an emergency.                              February 2, 2016. This service
       We issued a notice of proposed                               This [Canadian] AD mandates the                      information describes procedures for a
                                                                 repetitive inspection of airstair door handrail         general visual inspection to detect
     rulemaking (NPRM) to amend 14 CFR                           hardware, and the modification of the
     part 39 by adding an AD that would                                                                                  deformities and cracks of the forward
                                                                 handrail stowage hardware.
     apply to certain Bombardier, Inc. Model                                                                             and aft handle holder brackets on the
     DHC–8–400 series airplanes. The NPRM                          Required actions include applicable                   airstair handrail; a detailed visual
     published in the Federal Register on                        corrective actions (replacing or                        inspection of the forward and aft pin
     December 16, 2016 (81 FR 91058) (‘‘the                      removing brackets, installing lanyards,                 retainer brackets for the condition of the
     NPRM’’). The NPRM was prompted by                           adjusting pins, and adjusting affected                  lanyards and the pins; a check for
     reports of interruptions in the airstair                    parts of the assembly). You may                         unobstructed movement of the pin
     door operation. The NPRM proposed to                        examine the MCAI in the AD docket on                    retainer brackets; and rework of the
     require repetitive inspections and                          the Internet at http://                                 airstair door handrail to prevent damage
     modification of the handrail hardware.                      www.regulations.gov by searching for                    to the bulkhead and to prevent the door
     We are issuing this AD to ensure the                        and locating Docket No. FAA–2016–                       from jamming once the handrails are
                                                                 9438.                                                   stowed. This service information is
     ability to evacuate passengers through
     the airstair door in the event of an                        Comments                                                reasonably available because the
     emergency.                                                                                                          interested parties have access to it
                                                                   We gave the public the opportunity to
       Transport Canada Civil Aviation                                                                                   through their normal course of business
                                                                 participate in developing this AD. We
     (TCCA), which is the aviation authority                                                                             or by the means identified in the
                                                                 considered the comment received. The
     for Canada, has issued Canadian                                                                                     ADDRESSES section.
                                                                 Air Line Pilots Association,
     Airworthiness Directive CF–2015–02,                         International supported the NPRM.                       Costs of Compliance
     dated January 27, 2015 (referred to after
     this as the Mandatory Continuing                            Conclusion                                                We estimate that this AD affects 82
     Airworthiness Information, or ’’the                           We reviewed the relevant data,                        airplanes of U.S. registry.
     MCAI’’), to correct an unsafe condition                     considered the comment received, and                      We estimate the following costs to
     for certain Bombardier, Inc. Model                          determined that air safety and the                      comply with this AD:

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

     Repetitive inspections ....         1 work-hour × $85 per hour = $85 per inspection                      $0   $85 per inspection cycle             $6,970 per inspection
                                           cycle.                                                                                                         cycle.
     Modification ....................   3 work-hours × $85 per hour = $255 ...................            1,556   $1,811 ...........................   $148,502.



       We have received no definitive data                       General requirements.’’ Under that                      not have a substantial direct effect on
     that will enable us to provide cost                         section, Congress charges the FAA with                  the States, on the relationship between
     estimates for the on-condition actions                      promoting safe flight of civil aircraft in              the national government and the States,
     specified in this AD.                                       air commerce by prescribing regulations                 or on the distribution of power and
                                                                 for practices, methods, and procedures                  responsibilities among the various
     Authority for This Rulemaking
                                                                 the Administrator finds necessary for                   levels of government.
       Title 49 of the United States Code                        safety in air commerce. This regulation                   For the reasons discussed above, I
     specifies the FAA’s authority to issue                      is within the scope of that authority                   certify that this AD:
     rules on aviation safety. Subtitle I,                       because it addresses an unsafe condition                  1. Is not a ‘‘significant regulatory
     section 106, describes the authority of                     that is likely to exist or develop on                   action’’ under Executive Order 12866;
     the FAA Administrator. ‘‘Subtitle VII:                      products identified in this rulemaking                    2. Is not a ‘‘significant rule’’ under the
     Aviation Programs,’’ describes in more                      action.                                                 DOT Regulatory Policies and Procedures
     detail the scope of the Agency’s                                                                                    (44 FR 11034, February 26, 1979);
     authority.                                                  Regulatory Findings                                       3. Will not affect intrastate aviation in
       We are issuing this rulemaking under                        We determined that this AD will not                   Alaska; and
     the authority described in ‘‘Subtitle VII,                  have federalism implications under                        4. Will not have a significant
     Part A, Subpart III, Section 44701:                         Executive Order 13132. This AD will                     economic impact, positive or negative,


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     24024              Federal Register / Vol. 82, No. 100 / Thursday, May 25, 2017 / Rules and Regulations

     on a substantial number of small entities               brackets to make sure that both lanyards are          in 14 CFR 39.19. In accordance with 14 CFR
     under the criteria of the Regulatory                    installed and to make sure that the head of           39.19, send your request to your principal
     Flexibility Act.                                        each pin is installed correctly; a check of the       inspector or local Flight Standards District
                                                             pin retainer brackets for unobstructed                Office, as appropriate. If sending information
     List of Subjects in 14 CFR Part 39                      movement; an operational check of the                 directly to the manager of the ACO, send it
                                                             forward passenger door; and all applicable            to the attention of the person identified in
       Air transportation, Aircraft, Aviation                corrective actions; in accordance with PART
     safety, Incorporation by reference,                                                                           paragraph (k)(2) of this AD. Before using any
                                                             A1 and PART A2 of the Accomplishment                  approved AMOC, notify your appropriate
     Safety.                                                 Instructions of Bombardier Service Bulletin           principal inspector, or lacking a principal
                                                             84–52–79, Revision C, dated February 2,
     Adoption of the Amendment                               2016, except as required by paragraphs (g)(1),
                                                                                                                   inspector, the manager of the local flight
                                                                                                                   standards district office/certificate holding
       Accordingly, under the authority                      (g)(2), and (g)(3) of this AD. Do all applicable
                                                             corrective actions before further flight.             district office.
     delegated to me by the Administrator,                                                                           (2) Contacting the Manufacturer: For any
     the FAA amends 14 CFR part 39 as                        Repeat the inspections and checks thereafter
                                                             at intervals not to exceed 600 flight hours           requirement in this AD to obtain corrective
     follows:                                                                                                      actions from a manufacturer, the action must
                                                             until the terminating action required by
                                                             paragraph (h) of this AD is accomplished.             be accomplished using a method approved
     PART 39—AIRWORTHINESS                                                                                         by the Manager, New York ACO, ANE–170,
                                                                (1) If one or both lanyards are missing,
     DIRECTIVES                                              before further flight, install lanyards as            FAA; or Transport Canada Civil Aviation
                                                             specified in, and in accordance with PART             (TCCA); or Bombardier, Inc.’s TCCA Design
     ■ 1. The authority citation for part 39                                                                       Approval Organization (DAO). If approved by
                                                             A1 of the Accomplishment Instructions of
     continues to read as follows:                           Bombardier Service Bulletin 84–52–79,                 the DAO, the approval must include the
         Authority: 49 U.S.C. 106(g), 40113, 44701.          Revision C, dated February 2, 2016.                   DAO-authorized signature.
                                                                (2) If a pin is not installed correctly, as
     § 39.13   [Amended]                                     specified in PART A1 of the                           (k) Related Information
     ■ 2. The FAA amends § 39.13 by adding                   Accomplishment Instructions of Bombardier               (1) Refer to Mandatory Continuing
     the following new airworthiness                         Service Bulletin 84–52–79, Revision C, dated          Airworthiness Information (MCAI) Canadian
                                                             February 2, 2016, before further flight, adjust       A D CF–2015–02, dated January 27, 2015, for
     directive (AD):                                         the affected pin until it is installed correctly      related information. This MCAI may be
     2017–09–11 Bombardier, Inc.: Amendment                  as specified in, and in accordance with,              found in the AD docket on the Internet at
         39–18873; Docket No. FAA–2016–9438;                 PART A1 of the Accomplishment                         http://www.regulations.gov by searching for
         Directorate Identifier 2016–NM–109–AD.              Instructions Bombardier Service Bulletin 84–          and locating Docket No. FAA–2016–9438.
                                                             52–79, Revision C, dated February 2, 2016.              (2) For more information about this AD,
     (a) Effective Date                                         (3) If a pin retainer bracket does not rotate      contact the Program Manager, Continuing
       This AD is effective June 29, 2017.                   freely, before further flight, adjust affected        Operational Safety, FAA, New York ACO,
                                                             parts of the assembly until the pin retainer
     (b) Affected ADs                                                                                              1600 Stewart Avenue, Suite 410, Westbury,
                                                             bracket rotates freely as specified in, and in
       None.                                                                                                       NY 11590; telephone 516–228–7300; fax
                                                             accordance with, PART A1 of the
                                                             Accomplishment Instructions of Bombardier             516–794–5531.
     (c) Applicability                                                                                               (3) Service information identified in this
                                                             Service Bulletin 84–52–79, Revision C, dated
        This AD applies to Bombardier, Inc. Model            February 2, 2016.                                     AD that is not incorporated by reference is
     DHC–8–400, –401, and –402 airplanes,                                                                          available at the addresses specified in
     certificated in any category, serial numbers            (h) Terminating Action                                paragraphs (l)(3) and (l)(4) of this AD.
     4001 through 4473 inclusive, equipped with                Within 6,000 flight hours or 36 months,             (l) Material Incorporated by Reference
     Bombardier ModSum 4–422100 or ModSum                    whichever occurs first, after the effective date
     4–458687 (Jetway Compatible Passenger                   of this AD: Incorporate Bombardier ModSum                (1) The Director of the Federal Register
     Airstair Door).                                         4–903234 to modify the installed jetway               approved the incorporation by reference
                                                             compatible handrail stowage bracket, in               (IBR) of the service information listed in this
     (d) Subject                                                                                                   paragraph under 5 U.S.C. 552(a) and 1 CFR
                                                             accordance with PART A3 of the
       Air Transport Association (ATA) of                    Accomplishment Instructions of Bombardier             part 51.
     America Code 52, Doors.                                 Service Bulletin 84–52–79, Revision C, dated             (2) You must use this service information
     (e) Reason                                              February 2, 2016. Incorporating Bombardier            as applicable to do the actions required by
                                                             ModSum 4–903234 terminates the actions                this AD, unless this AD specifies otherwise.
        This AD was prompted by reports of                   required by paragraph (g) of this AD.                    (i) Bombardier Service Bulletin 84–52–79,
     interruptions in the airstair door operation,                                                                 Revision C, dated February 2, 2016.
     including one case where the door would not             (i) Credit for Previous Actions
                                                                                                                      (ii) Reserved.
     open. The airstair door is classified as an                This paragraph provides credit for actions            (3) For service information identified in
     emergency exit. We are issuing this AD to               required by paragraph (g) of this AD, if those        this AD, contact Bombardier, Inc., Q-Series
     ensure the ability to evacuate passengers               actions were performed before the effective           Technical Help Desk, 123 Garratt Boulevard,
     through the airstair door in the event of an            date of this AD using the service information         Toronto, Ontario M3K 1Y5, Canada;
     emergency.                                              identified in paragraph (i)(1), (i)(2), or (i)(3)     telephone 416–375–4000; fax 416–375–4539;
                                                             of this AD.                                           email thd.qseries@aero.bombardier.com;
     (f) Compliance
                                                                (1) Bombardier Service Bulletin 84–52–79,
        Comply with this AD within the                                                                             Internet http://www.bombardier.com.
                                                             dated May 1, 2014.
     compliance times specified, unless already                                                                       (4) You may view this service information
                                                                (2) Bombardier Service Bulletin 84–52–79,
     done.                                                                                                         at the FAA, Transport Airplane Directorate,
                                                             Revision A, dated November 18, 2014.
                                                                (3) Bombardier Service Bulletin 84–52–79,          1601 Lind Avenue SW., Renton, WA. For
     (g) Repetitive Inspections of the Forward                                                                     information on the availability of this
                                                             Revision B, dated April 8, 2015.
     and Aft Handle Holder Brackets and                                                                            material at the FAA, call 425–227–1221.
     Forward and Aft Pin Retainer Brackets,                  (j) Other FAA AD Provisions                              (5) You may view this service information
     Repetitive Checks, and Corrective Actions                  The following provisions also apply to this        that is incorporated by reference at the
        Within 600 flight hours after the effective          AD:                                                   National Archives and Records
     date of this AD, perform a general visual                  (1) Alternative Methods of Compliance              Administration (NARA). For information on
     inspection of the forward and aft handle                (AMOCs): The Manager, New York Aircraft               the availability of this material at NARA, call
     holder brackets for damage, such as visible             Certification Office (ACO), ANE–170, FAA,             202–741–6030, or go to: http://
     cracks and deformation; a detailed visual               has the authority to approve AMOCs for this           www.archives.gov/federal-register/cfr/ibr-
     inspection of the forward and aft pin retainer          AD, if requested using the procedures found           locations.html.



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                        Federal Register / Vol. 82, No. 100 / Thursday, May 25, 2017 / Rules and Regulations                                          24025

       Issued in Renton, Washington, on April 27,            www.regulations.gov by searching for                  1016) that is outside of the area affected
     2017.                                                   and locating Docket No. FAA–2016–                     by the modification specified in
     Paul Bernado,                                           8848; or in person at the Docket                      paragraph (g) of the proposed AD (S–4L
     Acting Manager, Transport Airplane                      Management Facility between 9 a.m.                    and S–4R, STA 360–STA 908).
     Directorate, Aircraft Certification Service.            and 5 p.m., Monday through Friday,                      We agree with the commenter.
     [FR Doc. 2017–10339 Filed 5–24–17; 8:45 am]             except Federal holidays. The AD docket                Specifically, paragraphs (g) and (h) of
     BILLING CODE 4910–13–P                                  contains this AD, the regulatory                      AD 2015–16–08 apply to the
                                                             evaluation, any comments received, and                modification area specified in this AD,
                                                             other information. The address for the                but paragraphs (i), (j), and (k) of AD
     DEPARTMENT OF TRANSPORTATION                            Docket Office (phone: 800–647–5527) is                2015–16–08 do not. Therefore, we have
                                                             Docket Management Facility, U.S.                      revised paragraph (k) of this AD to
     Federal Aviation Administration                         Department of Transportation, Docket                  remove reference to paragraphs (i), (j),
                                                             Operations, M–30, West Building                       and (k) of AD 2015–16–08.
     14 CFR Part 39                                          Ground Floor, Room W12–140, 1200                      Effect of Winglets on Accomplishment
     [Docket No. FAA–2016–8848; Directorate                  New Jersey Avenue SE., Washington,                    of the Proposed Actions
     Identifier 2016–NM–054–AD; Amendment                    DC 20590.
     39–18895; AD 2017–10–21]                                FOR FURTHER INFORMATION CONTACT:
                                                                                                                      Aviation Partners Boeing stated that
                                                             Jennifer Tsakoumakis, Aerospace                       accomplishing the supplemental type
     RIN 2120–AA64                                                                                                 certificate (STC) ST01219SE does not
                                                             Engineer, Airframe Branch, ANM–120L,
                                                             FAA, Los Angeles Aircraft Certification               affect the actions specified in the
     Airworthiness Directives; The Boeing                                                                          NPRM.
     Company Airplanes                                       Office (ACO), 3960 Paramount
                                                                                                                      We concur with the commenter. We
                                                             Boulevard, Lakewood, CA 90712–4137;
     AGENCY:  Federal Aviation                                                                                     have redesignated paragraph (c) of the
                                                             phone: 562–627–5264; fax: 562–627–
     Administration (FAA), DOT.                                                                                    proposed AD as paragraph (c)(1) of this
                                                             5210; email: jennifer.tsakoumakis@
                                                                                                                   AD and added paragraph (c)(2) to this
     ACTION: Final rule.                                     faa.gov.
                                                                                                                   AD to state that installation of STC
     SUMMARY:    We are adopting a new                       SUPPLEMENTARY INFORMATION:                            ST01219SE does not affect the ability to
     airworthiness directive (AD) for certain                Discussion                                            accomplish the actions required by this
     The Boeing Company Model 737–300,                                                                             AD. Therefore, for airplanes on which
                                                                We issued a notice of proposed                     STC ST01219SE is installed, a ‘‘change
     –400, and –500 series airplanes. This
                                                             rulemaking (NPRM) to amend 14 CFR                     in product’’ alternative method of
     AD was prompted by an evaluation by
                                                             part 39 by adding an AD that would                    compliance (AMOC) approval request is
     the design approval holder (DAH)
                                                             apply to certain The Boeing Company                   not necessary to comply with the
     indicating that the fuselage skin is
                                                             Model 737–300, –400, and 0500 series                  requirements of 14 CFR 39.17.
     subject to widespread fatigue damage
                                                             airplanes. The NPRM published in the
     (WFD). This AD requires modification                                                                          Conclusion
                                                             Federal Register on August 30, 2016 (81
     of the lap joint and repetitive
                                                             FR 59541) (‘‘the NPRM’’). The NPRM                      We reviewed the relevant data,
     inspections for cracking of the skin at
                                                             was prompted by an evaluation by the                  considered the comments received, and
     critical fastener rows. We are issuing
                                                             DAH indicating that the fuselage skin is              determined that air safety and the
     this AD to address the unsafe condition
                                                             subject to WFD. The NPRM proposed to                  public interest require adopting this AD
     on these products.
                                                             require modification of the lap joint,                with the changes described previously
     DATES: This AD is effective June 29,                    including related investigative actions               and minor editorial changes. We have
     2017.                                                   and corrective actions if necessary. The              determined that these minor changes:
        The Director of the Federal Register                 NPRM also proposed to require                           • Are consistent with the intent that
     approved the incorporation by reference                 repetitive post-modification inspections              was proposed in the NPRM for
     of a certain publication listed in this AD              for cracking of the skin at critical                  correcting the unsafe condition; and
     as of June 29, 2017.                                    fastener rows, and corrective actions if                • Do not add any additional burden
     ADDRESSES: For service information                      necessary. We are issuing this AD to                  upon the public than was already
     identified in this final rule, contact                  detect and correct cracks at the lap joint            proposed in the NPRM.
     Boeing Commercial Airplanes,                            skin that could link up and result in                   We also determined that these
     Attention: Contractual & Data Services                  rapid decompression and loss of                       changes will not increase the economic
     (C&DS), 2600 Westminster Blvd., MC                      structural integrity of the airplane.                 burden on any operator or increase the
     110–SK57, Seal Beach, CA 90740–5600;                                                                          scope of this AD.
     telephone: 562–797–1717; Internet:                      Comments
     https://www.myboeingfleet.com. You                                                                            Related Service Information Under 1
                                                               We gave the public the opportunity to
     may view this referenced service                                                                              CFR Part 51
                                                             participate in developing this AD. The
     information at the FAA, Transport                       following presents the comments                         We reviewed Boeing Alert Service
     Airplane Directorate, 1601 Lind Avenue                  received on the NPRM and the FAA’s                    Bulletin 737–53A1343, dated March 25,
     SW., Renton, WA. For information on                     response to each comment.                             2016. The service information describes
     the availability of this material at the                                                                      procedures for modification of the lap
                                                             Request To Remove Certain References                  joint, including related investigative
     FAA, call 425–227–1221. It is also
                                                             in Terminating Action                                 actions and corrective actions if
     available on the Internet at http://
     www.regulations.gov by searching for                       Boeing requested that we remove                    necessary. The service information also
     and locating Docket No. FAA–2016–                       certain references to AD 2015–16–08,                  describes procedures for post-
     8848.                                                   Amendment 39–18233 (80 FR 51450,                      modification inspections for cracking of
                                                             August 25, 2015) (‘‘AD 2015–16–08’’).                 the skin at critical fastener rows, and
     Examining the AD Docket                                 Boeing pointed out that paragraphs (i),               corrective actions if necessary. This
       You may examine the AD docket on                      (j), and (k) of AD 2015–16–08 refer to a              service information is reasonably
     the Internet at http://                                 location (S–4R, Station (STA) 908–STA                 available because the interested parties


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Document Created: 2018-11-08 08:52:47
Document Modified: 2018-11-08 08:52:47
CategoryRegulatory Information
CollectionFederal Register
sudoc ClassAE 2.7:
GS 4.107:
AE 2.106:
PublisherOffice of the Federal Register, National Archives and Records Administration
SectionRules and Regulations
ActionFinal rule.
DatesThis AD is effective June 29, 2017.
ContactCesar A. Gomez, Aerospace Engineer, Airframe and Mechanical Systems Branch, ANE-171, FAA, New York Aircraft Certification Office (ACO), 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 516-228-7318; fax 516-794-5531.
FR Citation82 FR 24022 
RIN Number2120-AA64
CFR AssociatedAir Transportation; Aircraft; Aviation Safety; Incorporation by Reference and Safety

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