Airworthiness directives › 2014-22-51
AD 2014-22-51 Airworthiness Directives; Airbus Helicopters (Formerly Eurocopter France)
Applicability*9
This AD becomes effective February 25, 2015 to all persons except those persons to whom it was made immediately effective by Emergency AD 2014-22-51, issued on October 29, 2014, which contains the requirements of this AD.
Compliance
Special flight permits may be issued provided that the fan is removed.
Required actions
(1) The Manager, Safety Management Group, FAA, may approve AMOCs for this EAD. Send your proposal to: Eric Haight, Aviation Safety Engineer, Regulations and Policy Group, Rotorcraft Directorate, FAA, 2601 Meacham Blvd., Fort Worth, Texas 76137; telephone (817) 222-5110; email eric.haight@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 EAD through an AMOC.
Unsafe condition
Before further flight and thereafter at intervals not to exceed 10 hours time-in-service, using a light and a mirror, visually inspect the hopper for a crack at the four fan attachment points. The hopper is depicted as item “a” and the fan as item “b” in Figure 1 of Airbus Helicopters Emergency Alert Service Bulletin No. 05A020, Revision 0, dated October 20, 2014 (EASB). If there is a crack in the hopper, replace the hopper with an airworthy hopper. Examples of a crack are shown in Figure 2 of the EASB. Replacing the hopper does not constitute terminating action for the repetitive visual inspections required by this AD.
Affected ADs
This AD defines the unsafe condition as a crack in the main gearbox oil cooler fan hopper. This condition could result in failure of the fan attachment, interference of the fan with the control rod of the front servo-control or with the flight control bellcrank, and subsequent loss of control of the helicopter.
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The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1