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Federal Register / Vol. 86, No. 160 / Monday, August 23, 2021 / Proposed Rules Examining the AD Docket You may examine the AD docket at https www.regulations.gov by searching for and locating Docket No.
FAA20210688; 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 NPRM, the European Aviation Safety Agency now European Union Aviation Safety Agency EASA AD, any comments received, and other information. The street address for Docket Operations is listed above.
FOR FURTHER INFORMATION CONTACT:
Andrea Jimenez, Aerospace Engineer, COS Program Management Section, Operational Safety Branch, Compliance & Airworthiness Division, FAA, 1600
Stewart Ave., Suite 410, Westbury, NY
11590; telephone 516 2287330; email andrea.jimenez@faa.gov.
SUPPLEMENTARY INFORMATION:

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Comments Invited The FAA invites you to send any written relevant data, views, or arguments about this proposal. Send your comments to an address listed under ADDRESSES. Include Docket No.
FAA20210688; Project Identifier 2019SW025AD at the beginning of your comments. The most helpful comments reference a specific portion of the proposal, explain the reason for any recommended change, and include supporting data. The FAA will consider all comments received by the closing date and may amend this proposal because of those comments.
Except for Confidential Business Information CBI as described in the following paragraph, and other information as described in 14 CFR
11.35, the FAA will post all comments received, without change, to https
www.regulations.gov, including any personal information you provide. The agency will also post a report summarizing each substantive verbal contact received about this NPRM.
Confidential Business Information CBI is commercial or financial information that is both customarily and actually treated as private by its owner.
Under the Freedom of Information Act FOIA 5 U.S.C. 552, CBI is exempt from public disclosure. If your comments responsive to this NPRM
contain commercial or financial information that is customarily treated as private, that you actually treat as private, and that is relevant or responsive to this NPRM, it is important that you clearly designate the submitted comments as CBI. Please mark each page of your submission containing CBI

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as PROPIN. The FAA will treat such marked submissions as confidential under the FOIA, and they will not be placed in the public docket of this NPRM. Submissions containing CBI
should be sent to Andrea Jimenez, Aerospace Engineer, COS Program Management Section, Operational Safety Branch, Compliance &
Airworthiness Division, FAA, 1600
Stewart Ave., Suite 410, Westbury, NY
11590; telephone 516 2287330; email andrea.jimenez@faa.gov. Any commentary that the FAA receives which is not specifically designated as CBI will be placed in the public docket for this rulemaking.
Background EASA, which is the Technical Agent for the Member States of the European Union, issued EASA AD 20160032, dated February 24, 2016 EASA AD
20160032, to correct an unsafe condition for HG Model Cabri G2
helicopters. EASA AD 20160032 states HG has revised the airworthiness limitations and maintenance tasks specified in the existing maintenance manual. EASA further advised the revisions include new and more restrictive applicable life limits and compliance times for applicable tasks.
Accordingly, EASA 20160032 required replacing each affected part before exceeding its life limit, accomplishing all applicable maintenance tasks within the defined intervals as described in revised maintenance manual and if discrepancies were found accomplishing the corrective actions in accordance with the applicable maintenance instructions or contacting HG. EASA AD 20160032 also required revising the existing Aircraft Maintenance Program AMP for your helicopter by incorporating the actions specified in the revised maintenance.
After EASA issued EASA AD 2016
0032, HG again revised the airworthiness limitations and maintenance tasks.
Accordingly, EASA superseded EASA
AD 20160032 with EASA AD 2019
0025, dated February 4, 2019 EASA AD
20190025. EASA advises new and more restrictive life limits have been established for cooling fan part number P/N G5200001, and P/N G5200
002, which have been identified as mandatory for continued airworthiness in Helicopteres Guimbal Cabri G2
Maintenance Manual MM and Instructions for Continued Airworthiness J70002 Issue 06, Section C, Airworthiness Limitations, dated December 6, 2018 MM J70002 Issue 06. In addition to the new life limits, EASA further advises of new and more
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restrictive inspection intervals identified in MM J70002Issue 06 for cooling fan P/N G5200001 with a certain mounted cooling fan front flange P/N G5202200, or P/N G5202201.
EASA further advises MM J70002 Issue 06, revised the tail structure paint to include certain part-numbered tail booms and an additional figure. This condition, if not addressed, could result in parts remaining in service beyond their fatigue life and failure of a part, which could result in loss of control of the helicopter.
Accordingly, EASA AD 20190025
retains the requirements of EASA AD
20160032 and requires replacing each affected part before exceeding its life limit, accomplishing all applicable maintenance tasks within the defined intervals as described in MM J70002
Issue 6, and if discrepancies are found accomplishing the corrective actions in accordance with the applicable maintenance instructions or contacting HG. EASA AD 20190025 also requires revising the tail structure paint scheme to include certain part-numbered tail booms and an additional figure. EASA
AD 20190025 requires revising the existing AMP for your helicopter by incorporating the actions specified in MM J70002 Issue 6.
FAAs Determination These helicopters have been approved by EASA and are approved for operation in the United States. Pursuant to the FAAs bilateral agreement with the European Union, EASA has notified the FAA about the unsafe condition described in its AD. The FAA is proposing this AD after evaluating all known relevant information and determining that the unsafe condition described previously is likely to exist or develop on other helicopters of the same type designs.
Related Service Information Under 1
CFR Part 51
The FAA reviewed Helicopteres Guimbal Cabri G2 MM J70002 Issue 06.
This service information specifies airworthiness life limits, inspection intervals, and CMR requirements for parts installed on Cabri G2 helicopters.
Issue 06 establishes life limits for certain part-numbered cooling fan front flanges, and engine pulley ball bearings and CMR requirements for certain cooling fan front flanges.
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.

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