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Federal Register / Vol. 86, No. 45 / Wednesday, March 10, 2021 / Rules and Regulations
specified compliance time unless it has already been accomplished prior to that time.
g Definitions 1 For the purposes of this AD, an affected part is any MRM having part number P/N
350A371290XX where XX can be any numerical combination and a serial number as listed in Airbus Helicopters Alert Service Bulletin AS35062.00.42, Revision 0, dated September 17, 2018; Airbus Helicopters Alert Service Bulletin AS35562.00.37, Revision 0, dated September 17, 2018; or Airbus Helicopters Alert Service Bulletin EC130
62A017, Revision 0, dated September 17, 2018, as applicable to your model helicopter,
Note 1 to paragraph h1: Unless specified otherwise, the hours TIS specified in figure 1 to paragraph h of this AD are those accumulated on the effective date of this AD by the helicopter since first flight.
2 If, during any inspection of the MRM
upper bearing sealant bead as required by paragraph h1 of this AD, there is damage, before further flight, inspect the installation of the MRM upper bearing inner race retaining rings for discrepancies in accordance with paragraph i1 of this AD.
i MRM Inner Race Retaining Rings Inspection 1 For Group 1 Helicopters: Within 660
hours TIS or 6 months, whichever occurs first after the effective date of this AD:
Inspect the installation of the MRM upper bearing inner race retaining rings for discrepancies in accordance with the Accomplishment Instructions of section 3.B.2.b of Airbus Helicopters Alert Service Bulletin AS350 62.00.42, Revision 0, dated September 17, 2018; Airbus Helicopters Alert Service Bulletin AS35562.00.37, Revision 0, dated September 17, 2018; or Airbus Helicopters Alert Service Bulletin EC130
62A017, Revision 0, dated September 17, 2018, as applicable to your model helicopter, except you are not required to discard the plastic clamps Item vv. For the purposes of this inspection, discrepancies may be indicated by incorrect positioning or missing rings.
2 If, during the inspection required by paragraph i1 of this AD there are any discrepancies, before further flight, remove the affected part, inspect the MRM inner race for degradation, and replace the retaining rings in accordance with the Accomplishment Instructions of section
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unless the upper bearing inner race retaining rings are verified to be installed correctly as specified in the inspection required in paragraph i1 of this AD.
2 For the purposes of this AD, a Group 1 helicopter is one on which an affected part is installed.
3 For the purposes of this AD, a Group 2 helicopter is one on which an affected part is not installed.
h MRM Upper Sealant Bead Inspection 1 For Group 1 helicopters, within the compliance time specified in Figure 1 to paragraph h of this AD, and, thereafter, at intervals not to exceed 165 hours time-in-

3.B.2.c of Airbus Helicopters Alert Service Bulletin AS350 62.00.42, Revision 0, dated September 17, 2018; Airbus Helicopters Alert Service Bulletin AS35562.00.37, Revision 0, dated September 17, 2018; or Airbus Helicopters Alert Service Bulletin EC130
62A017, Revision 0, dated September 17, 2018, as applicable to you model helicopter, except you are not required to return parts to Airbus Helicopters. For the purposes of this inspection, degradation is indicated by damage to the retaining rings including but not limited to cracks, scratches, and gouges, deterioration, or wear.
3 If, during the inspection of the MRM
inner race, as required by paragraph i2 of this AD, there is any degradation, before next flight, repair or replace the MRM.
j Terminating Action Verification on a helicopter of correct installation of the MRM upper bearing inner race retaining rings, as required by paragraph i1 of this AD, or corrective action on a helicopter, as specified in paragraphs h2, i2, or i3 of this AD, as applicable, constitute terminating action for the repetitive inspections required by paragraph h1 of this AD for that helicopter.
k Parts Installation Prohibition As of the effective date of this AD, no person may install, on any helicopter, an affected part as identified in paragraph g1
of this AD.
l Alternative Methods of Compliance AMOCs 1 The Manager, International Validation Branch, FAA, may approve AMOCs for this AD. Send your proposal to: Scott Franke, Aviation Safety Engineer, International
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service TIS: Inspect the MRM upper bearing sealant bead for damage in accordance with section 3.B.2.a of the Accomplishment Instructions of Airbus Helicopters Alert Service Bulletin AS35062.00.42, Revision 0, dated September 17, 2018; Airbus Helicopters Alert Service Bulletin AS355
62.00.37, Revision 0, dated September 17, 2018; or Airbus Helicopters Alert Service Bulletin EC13062A017, Revision 0, dated September 17, 2018, as applicable to your model helicopter, except you are not required to discard the plastic clamps Item vv. For the purposes of this inspection, damage may be indicated by flaws, cracks, folds, separation, or absence of the sealant bead.

Validation Branch, General Aviation &
Rotorcraft Unit, FAA, 10101 Hillwood Pkwy., Fort Worth, TX 76177; telephone 817222
5110; email 9-AVS-AIR-730-AMOC@faa.gov.
2 For operations conducted under a 14
CFR part 119 operating certificate or under 14 CFR part 91, subpart K, notify your principal inspector or lacking a principal inspector, the manager of the local flight standards district office or certificate holding district office, before operating any aircraft complying with this AD through an AMOC.
m Related Information The subject of this AD is addressed in European Aviation Safety Agency now European Union Aviation Safety Agency EASA AD 20180206, dated September 20, 2018. This EASA AD may be found in the AD
docket on the internet at https
www.regulations.gov by searching for and locating Docket No. FAA20200847.
n Material Incorporated by Reference 1 The Director of the Federal Register approved the incorporation by reference 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 Airbus Helicopters Alert Service Bulletin AS35062.00.42, Revision 0, dated September 17, 2018.
ii Airbus Helicopters Alert Service Bulletin AS35562.00.37, Revision 0, dated September 17, 2018.
iii Airbus Helicopters Alert Service Bulletin EC13062A017, Revision 0, dated September 17, 2018.

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