[Federal Register Volume 86, Number 231 (Monday, December 6, 2021)]
[Rules and Regulations]
[Pages 68889-68891]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2021-26391]


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DEPARTMENT OF TRANSPORTATION

Federal Aviation Administration

14 CFR Part 39

[Docket No. FAA-2021-0691; Project Identifier MCAI-2020-01542-T; 
Amendment 39-21812; AD 2021-23-14]
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 reports of erratic electrical system status on the push 
button annunciators (PBAs) and the engine instrument and crew alerting 
system (EICAS). This AD requires revising the existing airplane flight 
manual (AFM) to incorporate procedures to be applied during erroneous 
electrical status indication conditions. The FAA is issuing this AD to 
address the unsafe condition on these products.

DATES: This AD is effective January 10, 2022.
    The Director of the Federal Register approved the incorporation by 
reference of certain publications listed in this AD as of January 10, 
2022.

ADDRESSES: For service information identified in this final rule, 
contact Bombardier, Inc., 200 C[ocirc]te-Vertu Road West, Dorval, 
Qu[eacute]bec H4S 2A3, Canada; North America toll-free telephone 1-866-
538-1247 or direct-dial telephone 1-514-855-2999; email 
[email protected]; internet https://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 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-2021-
0691.

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-2021-
0691; 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,

[[Page 68890]]

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: Steven Dzierzynski, Aerospace 
Engineer, Avionics and Electrical Systems Section, FAA, New York ACO 
Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 
516-228-7367; fax 516-794-5531; email [email protected].

SUPPLEMENTARY INFORMATION:

Background

    Transport Canada Civil Aviation (TCCA), which is the aviation 
authority for Canada, has issued TCCA AD CF-2020-46, dated November 17, 
2020 (TCCA AD CF-2020-46) (also referred to after this as the Mandatory 
Continuing Airworthiness Information, or 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 at https://www.regulations.gov by searching for and locating Docket No. FAA-2021-
0691.
    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 August 23, 2021 (86 FR 47036). The NPRM was prompted by 
reports of erratic electrical system status on the PBAs and the EICAS. 
The NPRM proposed to require revising the existing AFM to incorporate 
procedures to be applied during erroneous electrical status indication 
conditions. The FAA is issuing this AD to address erroneous indications 
that could mislead pilots, causing them to turn off active electrical 
power sources, leading to partial or complete loss of electrical power. 
Loss of electrical power could result in the loss of flight displays 
and reduced controllability of the airplane. 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:
     Are consistent with the intent that was proposed in the 
NPRM for addressing 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 has issued the following sections of the applicable 
AFMs. This service information provides procedures to inform the pilots 
not to turn off active generators in the event of an erroneous 
electrical status indication.
     Section 03-19, Electrical, of Chapter 03, Emergency 
Procedures, of the Bombardier Challenger 300 (Imperial Version) 
Airplane Flight Manual, Publication No. CSP 100-1, Revision 63, dated 
April 1, 2021. (For obtaining this section of the Bombardier Challenger 
300 (Imperial Version) Airplane Flight Manual, Publication No. CSP 100-
1, use Document Identification No. CH 300 AFM-I.)
     Section 05-19, Electrical, of Chapter 05, Non-Normal 
Procedures, of the Bombardier Challenger 300 (Imperial Version) 
Airplane Flight Manual, Publication No. CSP 100-1, Revision 63, dated 
April 1, 2021. (For obtaining this section of the Bombardier Challenger 
300 (Imperial Version) Airplane Flight Manual, Publication No. CSP 100-
1, use Document Identification No. CH 300 AFM-I.)
     Section 03-19, Electrical, of Chapter 03, Emergency 
Procedures, of the Bombardier Challenger 350 Airplane Flight Manual, 
Publication No. CH 350 AFM, Revision 29, dated April 1, 2021.
     Section 05-19, Electrical, of Chapter 05, Non-Normal 
Procedures, of the Bombardier Challenger 350 Airplane Flight Manual, 
Publication No. CH 350 AFM, Revision 29, dated April 1, 2021.
    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 275 airplanes of U.S. 
registry. The FAA estimates the following costs to comply with this AD:

                                      Estimated Costs for Required Actions
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                                                                                    Cost per       Cost on U.S.
                          Labor cost                              Parts cost        product         operators
----------------------------------------------------------------------------------------------------------------
1 work-hour x $85 per hour = $85.............................              $0              $85          $23,375
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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.

[[Page 68891]]

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:

2021-23-14 Bombardier, Inc.: Amendment 39-21812; Docket No. FAA-
2021-0691; Project Identifier MCAI-2020-01542-T.

(a) Effective Date

    This airworthiness directive (AD) is effective January 10, 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 and 
subsequent.

(d) Subject

    Air Transport Association (ATA) of America Code 24, Electrical 
power.

(e) Unsafe Condition

    This AD was prompted by reports of erratic electrical system 
status on the push button annunciators (PBAs) and the engine 
instrument and crew alerting system (EICAS), while on-ground and 
during flight. The FAA is issuing this AD to address erroneous 
indications that could mislead pilots, causing them to turn off 
active electrical power sources, leading to partial or complete loss 
of electrical power. Loss of electrical power could result in the 
loss of flight displays and reduced controllability of the airplane.

(f) Compliance

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

(g) Revision of the Airplane Flight Manual (AFM)

    Within 60 days after the effective date of this AD: Revise the 
Emergency Procedures and Non-Normal Procedures sections of the 
existing AFM to include the information in Section 03-19, 
Electrical, of Chapter 03, Emergency Procedures, and Section 05-19, 
Electrical, of Chapter 05, Non-Normal Procedures, of the Bombardier 
Challenger 300 (Imperial Version) Airplane Flight Manual, 
Publication No. CSP 100-1, Revision 63, dated April 1, 2021 (for 
airplanes having serial numbers 20003 through 20500 inclusive); or 
Bombardier Challenger 350 Airplane Flight Manual, Publication No. CH 
350 AFM, Revision 29, dated April 1, 2021 (for airplanes having 
serial numbers 20501 through 20999 inclusive); as applicable.
    Note 1 to paragraph (g): For obtaining the sections for 
Bombardier Challenger 300 (Imperial Version) Airplane Flight Manual, 
Publication No. CSP 100-1, use Document Identification No. CH 300 
AFM-I.

(h) 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 Section 03-19, Electrical, of Chapter 03, 
Emergency Procedures, and Section 05-19, Electrical, of Chapter 05, 
Non-Normal Procedures, of the Bombardier Challenger 300 (Imperial 
Version) Airplane Flight Manual, Publication No. CSP 100-1, Revision 
62, dated December 22, 2020; or Bombardier Challenger 350 Airplane 
Flight Manual, Publication No. CH 350 AFM, Revision 28, dated 
December 22, 2020; as applicable.
    Note 2 to paragraph (h): For obtaining the sections for 
Bombardier Challenger 300 (Imperial Version) Airplane Flight Manual, 
Publication No. CSP 100-1, use Document Identification No. CH 300 
AFM-I.

(i) 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; fax 516-794-5531. 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.

(j) Related Information

    (1) Refer to Mandatory Continuing Airworthiness Information 
(MCAI) TCCA AD CF-2020-46, dated November 17, 2020, 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-2021-0691.
    (2) For more information about this AD, contact Steven 
Dzierzynski, Aerospace Engineer, Avionics and Electrical Systems 
Section, FAA, New York ACO Branch, 1600 Stewart Avenue, Suite 410, 
Westbury, NY 11590; telephone 516-228-7367; fax 516-794-5531; email 
[email protected].
    (3) Service information identified in this AD that is not 
incorporated by reference is available at the addresses specified in 
paragraphs (k)(3) and (4) of this AD.

(k) 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) Section 03-19, Electrical, of Chapter 03, Emergency 
Procedures, of the Bombardier Challenger 300 (Imperial Version) 
Airplane Flight Manual, Publication No. CSP 100-1, Revision 63, 
dated April 1, 2021.
    (ii) Section 03-19, Electrical, of Chapter 03, Emergency 
Procedures, of the Bombardier Challenger 350 Airplane Flight Manual, 
Publication No. CH 350 AFM, Revision 29, dated April 1, 2021.
    (iii) Section 05-19, Electrical, of Chapter 05, Non-Normal 
Procedures, of the Bombardier Challenger 300 (Imperial Version) 
Airplane Flight Manual, Publication No. CSP 100-1, Revision 63, 
dated April 1, 2021.
    (iv) Section 05-19, Electrical, of Chapter 05, Non-Normal 
Procedures, of the Bombardier Challenger 350 Airplane Flight Manual, 
Publication No. CH 350 AFM, Revision 29, dated April 1, 2021.
    (3) For service information identified in this AD, contact 
Bombardier, Inc., 200 C[ocirc]te-Vertu Road West, Dorval, 
Qu[eacute]bec H4S 2A3, Canada; North America toll-free telephone 1-
866-538-1247 or direct-dial telephone 1-514-855-2999; email 
[email protected]; internet https://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 November 2, 2021.
Lance T. Gant,
Director, Compliance & Airworthiness Division, Aircraft Certification 
Service.
[FR Doc. 2021-26391 Filed 12-3-21; 8:45 am]
BILLING CODE 4910-13-P