Airworthiness directives › 2017-09-02
AD 2017-09-02 Airworthiness Directives; Airbus Helicopters Deutschland GmbH Helicopters
Applicability*9
This AD becomes effective May 31, 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, TX 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. 2016-0001, dated January 4, 2016. You may view the EASA AD on the Internet at http://www.regulations.gov in Docket No. FAA-2016-6928.
Unsafe condition
(1) Within 100 hours time-in-service (TIS), manually inspect each ring to determine if it is loose. If a ring is loose, before further flight, glue the ring on the air inlet using an adhesive (CM 687 or CM 6044 or equivalent) as shown in Figure 1 of Airbus Helicopters Alert Service Bulletin (ASB) MBB-BK117 C-2-21A-011, Revision 0, dated November 16, 2015 (ASB C-2-21A-011), or ASB MBB-BK117 D-2-21A-004, Revision 0, dated November 16, 2015 (ASB D-2-21A-004), as applicable to your model helicopter. Rivet the ring to the air inlet in accordance with the Accomplishment Instructions, paragraphs 3.B.4.2 through 3.B.4.4 of ASB C-2-21A-011 or paragraphs 3.B.3.2 through 3.B.3.4 of ASB D-2-21A-004. (2) If a ring is not loose, within 400 hours TIS: (i) Manually inspect the ring to determine if it is loose. If the ring is loose, before further flight, glue the ring on the air inlet using an adhesive (CM 687 or CM 6044 or equivalent) as shown in Figure 1 of ASB C-2-21A-011 or ASB D-2-21A-004. (ii) Rivet the ring to the air inlet in accordance with the Accomplishment Instructions, paragraphs 3.B.3.2 through 3.B.3.4 of ASB C-2-21A-011 or paragraphs 3.B.2.2 through 3.B.2.4 of ASB D-2-21A-004. (3) After the effective date of this AD, do not install an air inlet P/N B212M20C1005 on any helicopter unless the ring has been riveted to the air inlet in accordance with the requirements of this AD.
Affected ADs
This AD defines the unsafe condition as a detached air inlet cover ring (ring), which could become stuck between the air inlet and the cyclic stick, restricting movement of the cyclic stick. This condition could result in loss of helicopter control.
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