Airworthiness directives › 2017-05-04
AD 2017-05-04 Airworthiness Directives; Bell Helicopter Textron Canada Limited Helicopters
Applicability*9
This AD becomes effective March 17, 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
(1) Bell Helicopter Alert Service Bulletin (ASB) No. 206-13-130, Revision A, dated October 14, 2013 for model 206A, 206B, and TH67 helicopters and ASB 206L-13-171, Revision A, dated October 14, 2013 for model 206L series helicopters, which are not incorporated by reference, contain additional information about the subject of this final rule. For service information identified in this final rule, contact Bell Helicopter Textron Canada Limited, 12,800 Rue de l'Avenir, Mirabel, Quebec J7J1R4; telephone (450) 437-2862 or (800) 363-8023; fax (450) 433-0272; or at http://www.bellcustomer.com/files/. You may review a copy of the service information at the FAA, Office of the Regional Counsel, Southwest Region, 10101 Hillwood Pkwy., Room 6N-321, Fort Worth, TX 76177. (2) The subject of this AD is addressed in Transport Canada AD No. CF-2016-09, dated March 21, 2016. You may view the Transport Canada AD on the Internet at http://www.regulations.gov by searching for and locating it in Docket No. FAA-2017-0154.
Unsafe condition
Within 25 hours time-in-service (TIS), remove from service any TT strap that has 1,000 or more hours TIS or 18 or more months since installation. Thereafter, remove from service any TT strap before accumulating 1,000 hours TIS or 18 months since installation, whichever occurs first.
Affected ADs
This AD defines the unsafe condition as corrosion of a TT strap. This condition could result in failure of the TT strap and subsequent loss of control of the helicopter.
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