DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2021-0314; Project Identifier MCAI-2020-00599-R;
Amendment 39-21592; AD 2021-12-05]
Airworthiness Directives; Airbus Helicopters
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule.
SUMMARY: The FAA is adopting a new airworthiness directive (AD)
certain Airbus Helicopters Model EC155B1 helicopters. This AD was
prompted by a report of difficulties when jettisoning the co-pilot door
during non-scheduled maintenance. This AD requires a functional check
of the pilot and co-pilot door jettisoning system and corrective
actions if necessary, as specified in a European 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 July 20, 2021.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in this AD as of July 20,
ADDRESSES: For material incorporated by reference (IBR) in this
contact the EASA, Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany;
telephone +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-2021-0314.
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-
0314; 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: Kathleen Arrigotti, Program Manager,
Large Aircraft Section, International Validation Branch, Compliance &
Airworthiness Division, FAA, 2200 South 216th St., Des Moines, WA
98198; telephone and fax 206-231-3218; email
The EASA (now European Union Aviation Safety Agency), which is the
Technical Agent for the Member States of the European Union, has issued
EASA AD 2015-0157, dated July 30, 2015 (EASA AD 2015-0157) (also
referred to as the Mandatory Continuing Airworthiness Information, or
the MCAI), to correct an unsafe condition for Airbus Helicopters Model
EC 155 B1 helicopters, all serial numbers delivered after manufacturing
before June 30, 2015, and equipped with a pilot or co-pilot door
jettisoning system in accordance with Airbus Helicopters Modification
POST MOD 0752C05, except helicopters on which Aircraft Maintenance
Manual (AMM) Task 52-11-00-712 was accomplished on both pilot and co-
pilot doors since the last crew door installation.
The FAA issued a notice of proposed rulemaking (NPRM) to amend 14
CFR part 39 by adding an AD that would apply to certain Airbus
Helicopters Model EC155B1 helicopters. The NPRM published in the
Federal Register on April 22, 2021 (86 FR 21240). The NPRM was prompted
by a report of difficulties when jettisoning the co-pilot door during
non-scheduled maintenance. The NPRM proposed to require a functional
check of the pilot and co-pilot door jettisoning system and corrective
actions if necessary, as specified in an EASA AD.
The FAA is issuing this AD to address jamming of the affected door
jettisoning mechanism, which could reduce the ability of the flightcrew
to evacuate in the event of an emergency situation. 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 2015-0157 specifies procedures for doing a functional check
of the pilot and co-pilot door jettisoning system and corrective
actions. The corrective actions include greasing the tenons and
restoring the jettison system. 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 ADDRESSES section.
Costs of Compliance
The FAA estimates that this AD affects 14 helicopters of U.S.
registry. The FAA estimates the following costs to comply with this AD:
Estimated Costs for Required Actions
|8 work-hours x $85 per hour =
The FAA estimates the following costs
to do any necessary on-
condition action 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 this on-condition action:
Estimated Costs of On-Condition Actions
|1 work-hour 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