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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 Cote-Vertu Road West, Dorval,
Quebec H4S 2A3, Canada; North America toll-free telephone 1-866-
538-1247 or direct-dial telephone 1-514-855-2999; email
ac.yul@aero.bombardier.com; 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, 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 9-avs-nyaco-cos@faa.gov.
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
|
Labor cost
|
Parts cost
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Cost per
product
|
Cost on
U.S. operators
|
| 1 work-hour x $85 per hour =
$85 |
$0
|
$85
|
$23,375
|
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.
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
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]
2. The FAA amends Sec. 39.13 by adding the following new airworthiness
directive:
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