Airworthiness directives › 2015-11-07
AD 2015-11-07 Airworthiness Directives; Agusta S.p.A. Helicopters
Applicability*9
This AD becomes effective June 24, 2015.
Compliance
Special flight permits are prohibited.
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) 222-5110; 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
(1) Within 5 hours time-in-service (TIS) and thereafter at intervals not to exceed 100 hours TIS, using a 5X power magnifying glass and a light source, visually inspect each flanged adapter, part number (P/N) 412-040-622-101 and P/N 412-040-623-101, for a crack as shown in Figures 1 and 2 of AgustaWestland Bollettino Tecnico No. 412-139, dated February 19, 2014. (2) If there is a crack in a flanged adapter, before further flight, remove the flanged adapter from service. (3) Do not install a flanged adapter, P/N 412-040-622-101 or P/N 412-040-623-101, unless it has been inspected in accordance with the requirements of paragraphs (e)(1) and (e)(2) of this AD.
Affected ADs
This AD defines the unsafe condition as a crack in a tail rotor (T/R) drive shaft flanged adapter. This condition could result in failure of the T/R drive shaft and reduced control of the helicopter.
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