Airworthiness Directives; Bombardier, Inc., Airplanes

[Federal Register Volume 87, Number 92 (Thursday, May 12, 2022)]
[Rules and Regulations]
[Pages 29025-29027]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2022-10139]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2022-0016; Project Identifier MCAI-2021-00945-T; 
Amendment 39-22022; AD 2022-09-02]
RIN 2120-AA64


Airworthiness Directives; Bombardier, Inc., Airplanes

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

ACTION: Final rule.

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SUMMARY: The FAA is adopting a new airworthiness directive (AD) for 
certain Bombardier, Inc., Model BD-100-1A10 airplanes. This AD was 
prompted by a report that the nose wheel steering selector valve (SSV) 
can be slow to deactivate under low temperature conditions. This AD 
requires replacing the affected nose wheel SSV with a redesigned nose 
wheel SSV, and performing an operational test of the nose wheel SSV and 
nose wheel steering control system. This AD also prohibits the 
installation of a certain nose wheel SSV. The FAA is issuing this AD to 
address the unsafe condition on these products.

DATES: This AD is effective June 16, 2022.
    The Director of the Federal Register approved the incorporation by 
reference of certain publications listed in this AD as of June 16, 
2022.

ADDRESSES: For service information identified in this final rule, 
contact Bombardier Business Aircraft Customer Response Center, 400 
C[ocirc]te-Vertu Road West, Dorval, Qu[eacute]bec H4S 1Y9, Canada; 
telephone 514-855-2999; email [email protected]; internet 
http://www.bombardier.com. You may view this service information at the 
FAA, Airworthiness Products Section, Operational Safety Branch, 2200 
South 216th St., Des Moines, WA. For

[[Page 29026]]

information on the availability of this material at the FAA, call 206-
231-3195. It is also available on the internet at https://www.regulations.gov by searching for and locating Docket No. FAA-2022-
0016.

Examining the AD Docket

    You may examine the AD docket on the internet at https://www.regulations.gov by searching for and locating Docket No. FAA-2022-
0016; or in person at Docket Operations between 9 a.m. and 5 p.m., 
Monday through Friday, except Federal holidays. The AD docket contains 
this final rule, the mandatory continuing airworthiness information 
(MCAI), any comments received, and other information. The address for 
Docket Operations is 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: Chirayu Gupta, Aerospace Engineer, 
Mechanical Systems and Administrative Services Section, FAA, New York 
ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; 
telephone 516-228-7300; email [email protected].

SUPPLEMENTARY INFORMATION:

Discussion

    Transport Canada Civil Aviation (TCCA), which is the aviation 
authority for Canada, has issued TCCA AD CF-2021-29, dated August 18, 
2021 (TCCA AD CF-2021-29) (also referred to as the MCAI), to correct an 
unsafe condition for certain Bombardier, Inc., Model BD-100-1A10 
airplanes. You may examine the MCAI in the AD docket on the internet at 
https://www.regulations.gov by searching for and locating Docket No. 
FAA-2022-0016.
    The FAA 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 BD-100-1A10 airplanes. The NPRM published in the Federal 
Register on January 27, 2022 (87 FR 4170). The NPRM was prompted by a 
report that the nose wheel SSV can be slow to deactivate under low 
temperature conditions. The NPRM proposed to require replacing the 
affected nose wheel SSV with a redesigned nose wheel SSV, and 
performing an operational test of the nose wheel SSV and nose wheel 
steering control system. The NPRM also proposed to prohibit the 
installation of a certain nose wheel SSV. The FAA is issuing this AD to 
address a slow nose wheel SSV deactivation, which, in combination with 
an un-commanded steering input, could lead to a delayed transition to 
free castor mode and result in an aircraft runway excursion. See the 
MCAI for additional background information.

Comments

    The FAA gave the public the opportunity to participate in 
developing this final rule. The FAA received no comments on the NPRM or 
on the determination of the cost to the public.

Conclusion

    The FAA reviewed the relevant data and determined that air safety 
and the public interest require adopting this final rule as proposed, 
except for minor editorial changes. The FAA has determined that these 
minor changes:
    <bullet> Are consistent with the intent that was proposed in the 
NPRM for addressing the unsafe condition; and
    <bullet> 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 has issued Service Bulletin 100-32-35, dated March 30, 
2021; and Service Bulletin 350-32-011, dated March 30, 2021. This 
service information describes procedures for replacing the existing 
nose wheel SSV (part number 41130-107) with a redesigned nose wheel SSV 
(part number 41130-111), and performing an operational test of the nose 
wheel SSV and nose wheel steering control system. These documents are 
distinct since they apply to different airplane configurations. 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

    The FAA estimates that this AD affects 660 airplanes of U.S. 
registry. The FAA estimates the following costs to comply with this AD:

                                      Estimated Costs for Required Actions
----------------------------------------------------------------------------------------------------------------
                                                                                    Cost per       Cost on U.S.
                          Labor cost                              Parts cost        product         operators
----------------------------------------------------------------------------------------------------------------
4 work-hours x $85 per hour = $340...........................          $5,793           $6,133       $4,047,780
----------------------------------------------------------------------------------------------------------------

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.
    The FAA is 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

    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) Will not affect intrastate aviation in Alaska, and
    (3) 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.

[[Page 29027]]

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:

2022-09-02 Bombardier, Inc.: Amendment 39-22022; Docket No. FAA-
2022-0016; Project Identifier MCAI-2021-00945-T.

(a) Effective Date

    This airworthiness directive (AD) is effective June 16, 2022.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to Bombardier, Inc., Model BD-100-1A10 
airplanes, certificated in any category, serial numbers 20003 
through 20892 inclusive.

(d) Subject

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

(e) Unsafe Condition

    This AD was prompted by a report that the nose wheel steering 
selector valve (SSV) can be slow to deactivate under low temperature 
conditions. The FAA is issuing this AD to address a slow nose wheel 
SSV deactivation, which, in combination with an un-commanded 
steering input, could lead to a delayed transition to free castor 
mode and result in an aircraft runway excursion.

(f) Compliance

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

(g) Replacement of Nose Wheel SSV

    Within 36 months after the effective date of this AD: Replace 
the nose wheel SSV part number 41130-107 with the redesigned nose 
wheel SSV part number 41130-111; and before further flight, perform 
an operational test of the nose wheel SSV and nose wheel steering 
control system; in accordance with paragraphs 2.B. and 2.C. of the 
Accomplishment Instructions of the applicable service information 
specified in paragraphs (g)(1) and (2) of this AD. If any test 
fails, do applicable corrective actions and repeat the test until 
the part passes the test.
    (1) Bombardier Service Bulletin 100-32-35, dated March 30, 2021.
    (2) Bombardier Service Bulletin 350-32-011, dated March 30, 
2021.

(h) Parts Installation Prohibition

    Do not install nose wheel SSV, part number 41130-107 on any 
airplane as of the applicable compliance time specified in paragraph 
(h)(1) or (2) of this AD.
    (1) For airplanes that have nose wheel SSV, part number 41130-
107 installed as of the effective date of this AD: After replacement 
of nose wheel SSV as required by paragraph (g) of this AD.
    (2) For airplanes that, as of the effective date of this AD, do 
not have nose wheel SSV, part number 41130-107 installed: As of the 
effective date of this AD.

(i) No Reporting Requirement

    Although the service information specified in paragraphs (g)(1) 
and (2) of this AD specifies to submit certain information to the 
manufacturer, this AD does not include that requirement.

(j) 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 responsible Flight Standards Office, as appropriate. If 
sending information directly to the manager of the certification 
office, send it to ATTN: Program Manager, Continuing Operational 
Safety, FAA, New York ACO Branch, 1600 Stewart Avenue, Suite 410, 
Westbury, NY 11590; telephone 516-228-7300. Before using any 
approved AMOC, notify your appropriate principal inspector, or 
lacking a principal inspector, the manager of the responsible Flight 
Standards Office.
    (2) Contacting the Manufacturer: For any requirement in this AD 
to obtain instructions from a manufacturer, the instructions must be 
accomplished using a method approved by the Manager, New York ACO 
Branch, 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) Transport Canada AD CF-2021-29, dated August 18, 2021, for 
related information. This MCAI may be found in the AD docket on the 
internet at https://www.regulations.gov by searching for and 
locating Docket No. FAA-2022-0016.
    (2) For more information about this AD, contact Chirayu Gupta, 
Aerospace Engineer, Mechanical Systems and Administrative Services 
Section, FAA, New York ACO Branch, 1600 Stewart Avenue, Suite 410, 
Westbury, NY 11590; telephone 516-228-7300; email [email protected].

(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 100-32-35, dated March 30, 2021.
    (ii) Bombardier Service Bulletin 350-32-011, dated March 30, 
2021.
    (3) For service information identified in this AD, contact 
Bombardier Business Aircraft Customer Response Center, 400 
C[ocirc]te-Vertu Road West, Dorval, Qu[eacute]bec H4S 1Y9, Canada; 
telephone 514-855-2999; email [email protected]; internet 
http://www.bombardier.com.
    (4) You may view this service information at the FAA, 
Airworthiness Products Section, Operational Safety Branch, 2200 
South 216th St., Des Moines, WA. For information on the availability 
of this material at the FAA, call 206-231-3195.
    (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, email [email protected], or go to: https://www.archives.gov/federal-register/cfr/ibr-locations.html.

    Issued on April 11, 2022.
Lance T. Gant,
Director, Compliance & Airworthiness Division, Aircraft Certification 
Service.
[FR Doc. 2022-10139 Filed 5-11-22; 8:45 am]
BILLING CODE 4910-13-P

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