Airworthiness directives › 2013-05-21
AD 2013-05-21 Airworthiness Directives; Eurocopter France Helicopters
Applicability*9
This AD becomes effective April 30, 2013.
Compliance
(1) The Manager, Safety Management Group, FAA, may approve AMOCs for this AD. Send your proposal to: Gary Roach, Aviation Safety Engineer, Regulations and Policy Group, Rotorcraft Directorate, FAA, 2601 Meacham Blvd., Fort Worth, Texas 76137; telephone (817) 222-5110; email gary.b.roach@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) Eurocopter SB No. 53-006, Revision 1, dated September 30, 2004; SB No. 53-007, Revision 1, dated February 19, 2007; and Alert SB No. 05A002, Revision 0, dated July 18, 2006, which are not incorporated by reference, contain additional information about the subject of this AD. For service information identified in this AD, contact American Eurocopter Corporation, 2701 N. Forum Drive, Grand Prairie, Texas 75052; telephone (972) 641-0000 or (800) 232-0323; fax (972) 641-3775; or at http://www.eurocopter.com/techpub. You may review a copy of the service information at the FAA, Office of the Regional Counsel, Southwest Region, 2601 Meacham Blvd., Room 663, Fort Worth, Texas 76137. (2) The subject of this AD is addressed in European Aviation Safety Agency AD No. 2006-0278, dated September 7, 2006.
Unsafe condition
Within the next 100 hours time-in-service: (1) For helicopters that have not been modified in accordance with Modification 073521 or Modification 073525, install a vibration damper casing assembly on both sides of the helicopter by following paragraphs 2.B.2.a and 2.B.5 of the Accomplishment Instructions of Eurocopter Alert Service Bulletin No. 53A008, dated July 19, 2006 (ASB 53A008). (2) For helicopters that have been modified in accordance with Modification 073521 either at the time of manufacture or pursuant to Eurocopter Service Bulletin (SB) No. 53-006, Revision 1, dated September 30, 2004; or Modification 073525 either at the time of manufacture or pursuant to Eurocopter SB No. 53-007, Revision 1, dated February 19, 2007, install a vibration damper casing assembly on both sides of the helicopter by following paragraphs 2.B.3.a, 2.B.3.b, and 2.B.5 of the Accomplishment Instructions of ASB 53A008.
Affected ADs
This AD defines the unsafe condition as a cracked cabin vibration damper blade. This condition could result in failure of the blade, jamming of the flight controls, and subsequent loss of control of the helicopter.
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