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Federal Register / Vol. 86, No. 170 / Tuesday, September 7, 2021 / Rules and Regulations Helicopter Engines Mandatory Service
49907

Bulletin MSB 319 73 2825, Version J, dated March 15, 2019.

Table 1 to Paragraph gl HMU Group/ Condition Group 1 / 150 HMU operating hours or more accumulated since new or since last overhaul.
Group 1 / Less than 150 HMU operating hours accumulated since new or since last overhaul.

Within 500 HMU operating hours since the last inspection or since first installation of the HMU.

2 Repeat the inspection required by paragraph g1 of this AD at intervals not to exceed 500 HMU operating hours since the previous inspection.
Note 1 to paragraph g2: A noncumulative tolerance of 10% of HMU
operating hours hrs may be applied to the timing of each repetitive inspection, with a maximum allowable tolerance of +50 HMU
operating hrs. For example, counting from the initial inspection, the repeat inspections would occur at the following times, with the tolerance noted in parentheses; 500 HMU
operating hrs +50 hrs, 1000 HMU operating hrs +50 hrs, 1500 HMU operating hrs +50
hrs.
3 If a rejectable indication is found during any inspection required by paragraphs g1
or 2 of this AD, replace the sleeve assembly on the affected high-pressure pump drive gear shaft or replace the affected HMU in accordance with paragraph 2.4.2 or 4.4.2 of the MSB.
h Definitions 1 A Group 1 HMU is an HMU that was first installed on or before January 31, 2013, and that has not previously been inspected in accordance with Safran Helicopter Engines MSB 319 73 2825 Version G or later.
2 A Group 2 HMU is an HMU that was first installed after January 31, 2013, or a HMU that has previously been inspected in accordance with Safran Helicopter Engines MSB 319 73 2825 Version G or later.

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i No Reporting Requirement The reporting requirements specified in the Accomplishment Instructions, paragraph 2.4.2, of the MSB are not required by this AD.
j Credit for Previous Actions You may take credit for any initial inspection or replacement of an HMU or the sleeve assembly on the affected high-pressure pump drive gear shaft required by paragraph g of this AD if you performed the inspection or replacement in accordance with Safran Helicopter Engines MSB 319 73 2825, Version G, dated January 24, 2013; Version
VerDate Sep<11>2014

16:47 Sep 03, 2021

Before exceeding 200 HMU operating hours after the effective date of this AD.

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H, dated September 1, 2014; or Version I, dated April 26, 2016.
k Alternative Methods of Compliance AMOCs 1 The Manager, ECO Branch, FAA, has the authority to approve AMOCs for this AD, if requested using the procedures found in 14
CFR 39.19. In accordance with 14 CFR 39.19, send your request to your principal inspector or local Flight Standards District Office, as appropriate. If sending information directly to the manager of the ECO Branch, send it to the attention of the person identified in Related Information. Information may be emailed to: ANE-AD-AMOC@faa.gov.
2 Before using any approved AMOC, notify your appropriate principal inspector, or lacking a principal inspector, the manager of the local flight standards district office/
certificate holding district office.
l Related Information For more information about this AD, contact Wego Wang, Aviation Safety Engineer, ECO Branch, FAA, 1200 District Avenue, Burlington, MA 01803; phone: 781
2387134; fax: fax: 781 2387199; email:
wego.wang@faa.gov.
m Material Incorporated by Reference 1 The Director of the Federal Register approved the incorporation by reference IBR of the service information listed in this paragraph under 5 U.S.C. 552a and 1 CFR
part 51.
2 You must use this service information as applicable to do the actions required by this AD, unless the AD specifies otherwise.
i Safran Helicopter Engines Mandatory Service Bulletin MSB No. 319 73 2825, Version J, dated March 15, 2019.
Note 2 to paragraph m2i: Per Safran Helicopter Engines standing practice at the time MSB 319 73 2825, Version J, was issued, MSB 319 73 2825, Version J, is undated. The issue date for MSB 319 73 2825, Version J, appears on the Safran Helicopter Engines Arrius 2 B1 Service Bulletin Index, No. X 319
L5 980 2, dated December 11, 2020.

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ii Reserved 3 For Safran Helicopter Engines service information identified in this AD, contact Safran Helicopter Engines, S.A., Avenue du 1er Mai, 40220 Tarnos, France; phone: +33
0 5 59 74 45 11.
4 You may view this service information at FAA, Airworthiness Products Section, Operational Safety Branch, 1200 District Avenue, Burlington, MA 01803. For information on the availability of this material at the FAA, call 781 2387759.
5 You may view this service information that is incorporated by reference at the National Archives and Records Administration NARA. For information on the availability of this material at NARA, email: fr.inspection@nara.gov, or go to:
https www.archives.gov/federal-register/cfr/
ibr-locations.html.
Issued on August 7, 2021.
Gaetano A. Sciortino, Deputy Director for Strategic Initiatives, Compliance & Airworthiness Division, Aircraft Certification Service.
FR Doc. 202119226 Filed 9321; 8:45 am BILLING CODE 491013P

DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration 14 CFR Part 39
Docket No. FAA20210498; Project Identifier 2019SW072AD; Amendment 3921722; AD 20211904
RIN 2120AA64

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

E:FRFM07SER1.SGM

07SER1

ER07SE21.003

Group 2

Compliance Time Within 50 HMU operating hours after the effective date of this AD.