Airworthiness Directive · Amendment 39-19254 · Main rotor mast/swashplate
Airbus Helicopters
This AD applies to Model EC225LP helicopters, certificated in any category, with a main rotor (M/R) rotating swashplate (swashplate) part number (P/N) 332A31-3074-00 or P/N 332A31-3074-01 with a serial number listed in Appendix 4.A. of Airbus Helicopters Emergency Alert Service Bulletin No. 05A051, Revision 1, dated November 16, 2017 (EASB 05A051).
We are adopting a new airworthiness directive (AD) for Airbus Helicopters Model EC225LP helicopters. This AD requires inspecting each main rotor rotating swashplate (swashplate) control rod attachment yoke (yoke). This AD is prompted by a finding that the yoke is susceptible to cracking. The actions of this AD are intended to address an unsafe condition on these products.
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.
Within 15 hours time-in-service (TIS) and thereafter at intervals not to exceed 15 hours TIS, visually inspect each yoke for a crack, paying particular attention to the areas shown in Details B, C, and D of Figure 1 of EASB 05A051. If there is a crack on a yoke, before further flight, replace the swashplate.
