Airworthiness directives › 2013-03-02
AD 2013-03-02 Airworthiness Directives; Eurocopter France Helicopters
Applicability*9
This AD supersedes AD 2012-19-09, Amendment 39-17204, Docket No. FAA-2012-1018, Directorate Identifier 2011-SW-052-AD (77 FR 58925, September 25, 2012).
Compliance
(1) Within 55 hours time-in-service (TIS), and thereafter at intervals not to exceed 55 hours TIS, using a light, visually inspect the TRH for a crack in the entire area shown as Area C of the TRH in Figure 1 of Eurocopter Alert Service Bulletin (ASB) No. EC155-05A021, Revision 1, dated July 20, 2011, or ASB No. AS365-05.00.60, Revision 2, dated October 9, 2012, as applicable to your helicopter model. The inspection area is on the tail gearbox (TGB) side of the TRH. The TGB is shown as (c) in figures 2 and 3 of the ASBs. You must pay particular attention to the area around the screws, shown as (e) in Figure 3 of the ASBs, and the TRH between the lower part of the TGB and its fairing, shown as (d) in figures 2 and 3 of the ASBs, using details D and E of Figure 3 in the ASBs. You must turn the tail rotor by hand to inspect the entire Area C. (2) If there is a crack on the TRH, remove the TRH from service.
Required actions
No special flight permits will be permitted.
Unsafe condition
You are responsible for performing each action required by this AD within the specified compliance time unless it has already been accomplished prior to that time.
Affected ADs
This AD defines the unsafe condition as a crack in the TRH that could lead to a tail rotor jam, and subsequent reduced or 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