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Rules and Regulations
Federal Register Vol. 86, No. 107
Monday, June 7, 2021

This section of the FEDERAL REGISTER
contains regulatory documents having general applicability and legal effect, most of which are keyed to and codified in the Code of Federal Regulations, which is published under 50 titles pursuant to 44 U.S.C. 1510.

Examining the AD Docket
The Code of Federal Regulations is sold by the Superintendent of Documents.

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration 14 CFR Part 39
Docket No. FAA20210016; Project Identifier 2019SW114AD; Amendment 3921567; AD 20211105
RIN 2120AA64

Airworthiness Directives; Airbus Helicopters Federal Aviation Administration FAA, DOT.
ACTION: Final rule.
AGENCY:

The FAA is adopting a new airworthiness directive AD for all Airbus Helicopters Model EC225LP
helicopters. This AD was prompted by reports of an oil leak from the main gearbox MGB during engine start up.
This AD requires modifying and performing subsequent repetitive function testing of the MGB emergency lubrication EMLUB system as specified in a European Union Aviation Safety Agency EASA AD, which is incorporated by reference IBR. The FAA is issuing this AD to address the unsafe condition on these products.
DATES: This AD is effective July 12, 2021.
The Director of the Federal Register approved the incorporation by reference of a certain publication listed in this AD
as of July 12, 2021.
ADDRESSES: For material incorporated by reference IBR in this AD, 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 service information at the FAA, Office of the Regional Counsel, Southwest Region, 10101 Hillwood Pkwy., Room 6N321, Fort Worth, TX 76177. For information on the availability of this
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SUMMARY:

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material at the FAA, call 817 222
5110. It is also available on the internet at https www.regulations.gov by searching for and locating Docket No.
FAA20210016.
You may examine the AD docket on the internet at https
www.regulations.gov by searching for and locating Docket No. FAA2021
0016; 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, M30, West Building Ground Floor, Room W12140, 1200 New Jersey Avenue SE, Washington, DC 20590.
FOR FURTHER INFORMATION CONTACT: Hal Jensen, Aerospace Engineer, Operational Safety Branch, FAA, 950 LEnfant Plaza N SW, Washington, DC 20024;
telephone 202 2679167; email hal.jensen@faa.gov.
SUPPLEMENTARY INFORMATION:
Background EASA, which is the Technical Agent for the Member States of the European Union, has issued EASA AD 20160232, dated November 22, 2016 EASA AD
20160232, to correct an unsafe condition for Airbus Helicopters Model EC 225 LP helicopters. EASA later issued EASA AD 20160232R1, dated December 12, 2019 EASA AD 2016
0232R1, to revise EASA AD 20160232.
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 EC225LP helicopters. The NPRM
published in the Federal Register on March 15, 2021 86 FR 14281. The NPRM was prompted by reports of oil leaks during engine starting, originating from the MGB. The NPRM proposed to require modifying and repetitively functional testing the MGB EMLUB
system, and if there is a discrepancy, accomplishing corrective actions.
Accomplishing any corrective actions does not constitute terminating action for the repetitive functional tests, as specified in an EASA AD.
The FAA is issuing this AD to address inadvertent opening of the P 2.4 valve of the MGB EMLUB system, which
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results from MGB pressurization by compressed air produced by the engine during starting in response to a signal from the EMLUB electronic control card. See EASA AD 20160232R1 for additional background information.
Discussion of Final Airworthiness Directive 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
EASA AD 20160232R1 requires modifying the electrical control circuit of the MGB EMLUB system. After modifying, EASA AD 20160232R1
requires a repetitive functional test of the MGB EMLUB system, and if there is a discrepancy, accomplishing corrective actions. Accomplishing any corrective actions does not constitute terminating action for the repetitive functional tests.
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.
Differences Between This AD and the EASA AD
Where EASA AD 20160232R1 refers to December 6, 2016 the effective date of EASA AD 20160232, this AD
requires using the effective date of this final rule. EASA AD 20160232R1
allows an additional interval margin of 225 flight hours FH, while this AD
does not. Where the service information referenced in EASA AD 20160232R1
requires contacting Airbus Helicopters for corrective action, this AD requires accomplishing the corrective action using a method approved by the
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