DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2021-0105; Project Identifier MCAI-2020-01422-R;
Amendment 39-21543; AD 2021-10-10]
Airworthiness Directives; Airbus Helicopters
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule.
SUMMARY: The FAA is adopting a new airworthiness directive (AD)
Airbus Helicopters Model SA330J helicopters. This AD was prompted by
the failure of a second stage planet gear installed in the main gearbox
(MGB). This AD requires repetitively inspecting the MGB particle
detector and the MGB bottom housing (oil sump) for metal particles,
analyzing any metal particles that are found, and replacement of the
MGB if necessary, as specified in a European Aviation Safety Agency
(now European Union Aviation Safety Agency) (EASA) AD, which is
incorporated by reference. The FAA is issuing this AD to address the
unsafe condition on these products.
DATES: This AD is effective June 24, 2021.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in this AD as of June 24,
ADDRESSES: For material incorporated by reference (IBR) in this
contact the EASA, Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany;
phone: +49 221 8999 000; email: ADs@easa.europa.eu; internet:
www.easa.europa.eu. You may find this material on the EASA website at
https://ad.easa.europa.eu. You may view this material at the FAA,
Office of the Regional Counsel, Southwest Region, 10101 Hillwood Pkwy.,
Room 6N-321, Fort Worth, TX 76177. For information on the availability
of this material at the FAA, call 817-222-5110. It is also available in
the AD docket on the internet at https://www.regulations.gov by
searching for and locating Docket No. FAA-2021-0105.
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-
0105; 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: Mahmood G. Shah, Aviation Safety
Engineer, Fort Worth ACO Branch, FAA, 10101 Hillwood Pkwy., Fort Worth,
TX 76177; phone: 817-222-5538; email: firstname.lastname@example.org.
The EASA, which is the Technical Agent for the Member States of the
European Union, has issued EASA AD 2018-0272, dated December 13, 2018
(EASA AD 2018-0272) (also referred to as the Mandatory Continuing
Airworthiness Information, or the MCAI), to correct an unsafe condition
for all Airbus Helicopters Model SA330J helicopters.
The FAA issued a notice of proposed rulemaking (NPRM) to amend 14
CFR part 39 by adding an AD that would apply to all Airbus Helicopters
Model SA330J helicopters. The NPRM published in the Federal Register on
March 2, 2021 (86 FR 12127). The NPRM was prompted by the failure of a
second stage planet gear installed in the MGB. The NPRM proposed to
require repetitively inspecting the MGB particle detector and the MGB
bottom housing (oil sump) for metal particles, analyzing any metal
particles that are found, and replacement of the MGB if necessary, as
specified in an EASA AD.
The FAA is issuing this AD to address failure of an MGB second
stage planet gear, which could result in failure of the MGB and
subsequent loss of control of the helicopter. See the MCAI for
additional background information.
Discussion of Final Airworthiness Directive
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.
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
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
EASA AD 2018-0272 specifies procedures for repetitively inspecting
the MGB particle detector and the MGB bottom housing (oil sump) for
metal particles, analyzing any metal particles that are found, and
replacement of the MGB if necessary. This material is reasonably
available because the interested parties have access to it through
their normal course of business or by the means identified in the
The FAA considers this AD interim action. If final action is later
identified, the FAA might consider further rulemaking then.
Costs of Compliance
The FAA estimates that this AD affects 15 helicopters of U.S.
registry. The FAA estimates the following costs to comply with this AD:
Estimated Costs for Required Actions
|5 work-hours x $85 per hour =
The FAA estimates the following costs
to do any necessary on-
condition replacements that would be required based on the results of
any required actions. The FAA has no way of determining the number of
helicopters that might need these on-condition replacements:
Estimated Costs of On-Condition Actions
|40 work-hours x $85 per hour
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.
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
(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
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