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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2022-0886; Project Identifier MCAI-2022-00261-T;
Amendment 39-22193; AD 2022-20-09]
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-700-2A12 airplanes. This AD was
prompted by reports of insufficient clearance between the surrounding
structure/skin of the aircraft and select bleed air ducts that supply
the wing ice protection system (WIPS) in the rear fuselage. This AD
requires inspecting the bleed air duct and surrounding structure for
minimum clearance and damage, and applicable corrective actions. The
FAA is issuing this AD to address the unsafe condition on these
products.
DATES: This AD is effective November 25, 2022.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in this AD as of November 25,
2022.
ADDRESSES:
AD Docket: You may examine the AD docket at regulations.gov under
Docket No. FAA-2022-0886; 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.
Material Incorporated by Reference:
For service information identified in this final rule,
contact Bombardier Business Aircraft Customer Response Center, 400
Cote-Vertu Road West, Dorval, Quebec H4S 1Y9, Canada;
telephone 514-855-2999; email ac.yul@aero.bombardier.com;
website 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 at regulations.gov under
Docket No. FAA-2022-0886.
FOR FURTHER INFORMATION CONTACT: Elizabeth Dowling, 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 9-avs-nyaco-cos@faa.gov.
SUPPLEMENTARY INFORMATION:
Background
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-700-2A12 airplanes. The NPRM published in the Federal
Register on July 21, 2022 (87 FR 43462). The NPRM was prompted by AD
CF-2022-05, dated February 24, 2022, issued by Transport Canada Civil
Aviation (TCCA), which is the aviation authority for Canada (referred
to after this as the MCAI). The MCAI states that insufficient clearance
exists between the surrounding structure/skin of the aircraft and
select bleed air ducts that supply the WIPS in the rear fuselage on the
aircraft. Without sufficient clearance, the high pressure (HP) shroud
could interfere with the surrounding structures and possibly compromise
the HP ducting shroud's capability to provide bleed air leak routing,
which could result in a bleed air leak being undetected. A significant
undetected bleed air leak could expose the surrounding structure to
heat stress, resulting in reduced structural integrity of the airplane.
In the NPRM, the FAA proposed to require inspecting the bleed air
duct and surrounding structure for minimum clearance and damage, and
applicable corrective actions. The FAA is issuing this AD to address
the unsafe condition on these products.
You may examine the MCAI in the AD docket at regulations.gov under
Docket No. FAA-2022-0886.
Discussion of Final Airworthiness Directive
Comments
The FAA received no comments on the NPRM or on the determination of
the cost to the public.
Conclusion
This product has been approved by the aviation authority of another
country and is approved for operation in the United States. Pursuant to
the FAA's bilateral agreement with this State of Design Authority, it
has notified the FAA of the unsafe condition described in the MCAI
referenced above. The FAA reviewed the relevant data and determined
that air safety requires adopting this AD as proposed. Accordingly, the
FAA is issuing this AD to address the unsafe condition on this product.
Except for minor editorial changes, this AD is adopted as proposed in
the NPRM. None of the changes will increase the economic burden on any
operator.
Related Service Information Under 1 CFR Part 51
Bombardier has issued Service Bulletin 700-36-7502, dated October
28, 2020. This service information describes procedures for inspecting
the bleed air duct and surrounding structure for minimum clearance and
damage (wear and chafing), and corrective actions. Corrective actions
include adjusting the ductwork if clearance is below the minimum
required, and repairing any damage. 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 8 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-hours x $85 per hour =
$85 |
$1
|
$86
|
$688
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Estimated Costs of On-Condition
Actions
|
Labor cost
|
Parts cost
|
Cost per
product
|
| Up to 22 work-hours x $85 per
hour = $1,870 |
$0
|
$1,870
|
The FAA has included all known costs
in its cost estimate.
According to the manufacturer, however, some or all of the costs of
this AD may be covered under warranty, thereby reducing the cost impact
on affected operators.
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.
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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