Airworthiness directives › 2012-21-52
AD 2012-21-52 Airworthiness Directives; Agusta S.p.A. (Type Certificate Currently Held by AgustaWestland S.p.A.) (Agusta) Helicopters
Applicability*9
This AD becomes effective December 26, 2012 to all persons except those persons to whom it was made immediately effective by Emergency AD 2012-21-52, issued on October 23, 2012, which contained the requirements of this AD.
Compliance
Special flight permits will not be issued.
Required actions
(1) The Manager, Safety Management Group, FAA, may approve AMOCs for this AD. Send your proposal to: Robert Grant, Aviation Safety Engineer, Safety Management Group, FAA, 2601 Meacham Blvd., Fort Worth, Texas 76137; telephone 817-222-5328; email robert.grant@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.
Unsafe condition
Within 5 hours time-in-service (TIS): (1) Inspect the pilot collective stick installation to determine whether the self-locking nuts, part-number (P/N) MS17825-4, are secured with cotter pins, P/N MS24665-136, as depicted in Figure 1 to paragraph (e) of this AD. If the self-locking nuts are not secured with cotter pins, before further flight, reinstall the pilot collective stick. BILLING CODE 4910-13-P ER10DE12.000 (2) Inspect the co-pilot collective stick installation to determine whether the ring nut (item 2) is loose and the quick-release pin (item 3) is installed as depicted in Figure 2 to paragraph (e) of this AD. If the ring nut is loose or the quick-release pin is not installed, before further flight, reinstall the co-pilot collective stick. ER10DE12.001 (3) Inspect the pilot cyclic stick installation for proper installation of the bolt (item 3), washer (item 4), self-locking nut (item 7), washer (item 6), and the cotter pin (item 8), as depicted in Figure 3 to paragraph (e) of this AD. If the pilot cyclic stick is not installed as depicted, before further flight, reinstall the pilot cyclic stick. ER10DE12.002 (4) Inspect the co-pilot cyclic stick installation to determine whether the ring nut (item 1) is loose and the quick-release pin (item 5) is installed as depicted in Figure 4 to paragraph (e) of this AD. If the ring nut is loose or the quick-release pin is not installed as depicted, before further flight, reinstall the co-pilot cyclic stick. ER10DE12.003
Affected ADs
This AD defines the unsafe condition as an incorrectly installed cyclic and collective control stick, detachment of the cyclic or collective control stick, and subsequent loss of control of the helicopter.
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