Airworthiness directives › 2017-13-04
AD 2017-13-04 Airworthiness Directives; Airbus Helicopters Deutschland GmbH Helicopters
Applicability*9
This AD becomes effective July 27, 2017.
Compliance
(1) The Manager, Safety Management Group, FAA, may approve AMOCs for this AD. Send your proposal to: Matt Fuller, Senior Aviation Safety Engineer, Safety Management Group, Rotorcraft Directorate, FAA, 10101 Hillwood Pkwy., Fort Worth, Texas 76177; telephone (817) 222-5110; email 9-ASW-FTW-AMOC-Requests@faa.gov . (2) For operations conducted under a 14 CFR part 119 operating certificate or under 14 CFR part 91, subpart K, we suggest that you 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.
Required actions
The subject of this AD is addressed in European Aviation Safety Agency (EASA) AD No. 2015-0045, dated March 13, 2015, and corrected April 2, 2015, and in EASA AD No. 2016-0002, dated January 4, 2016. You may view the EASA ADs on the Internet at http://www.regulations.gov in Docket No. FAA-2017-0061.
Unsafe condition
(1) Within 200 hours time-in-service: (i) Replace each spacer on the vibration absorber with a flanged spacer. (ii) Re-identify each vibration absorber and M/R blade in accordance with paragraphs 3.B.2.3. or 3.B.2.4, as applicable, of Airbus Helicopters Alert Service Bulletin (ASB) MBB-BK117 C-2-62A-009, Revision 1, dated October 28, 2015, or ASB MBB-BK117 D-2-62A-001, Revision 1, dated October 28, 2015, whichever applies to your model helicopter. Record the new P/Ns and serial numbers for each M/R blade on the component history card or equivalent record. (2) After replacing the spacer in accordance with paragraph (e)(1) of this AD, do not install M/R blade P/N B621M1002103 or P/N D621M1002101, vibration absorber P/N B621M3001101, or spacer P/N 117-801841.11 on that helicopter. You may install M/R blade P/N B621M1002101 or P/N B621M1002102 provided you have complied with the requirements of paragraph (e)(1) of this AD.
Affected ADs
This AD defines the unsafe condition as damage to a bearing in an M/R blade vibration absorber. This condition could result in failure of the bearing, possibly resulting in the loss of the balls and damage to the helicopter and injury to persons on the ground.
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