Airworthiness directives › 2012-13-11
AD 2012-13-11 Airworthiness Directives; Eurocopter Deutschland GmbH Helicopters
Applicability*9
This AD becomes August 7, 2012.
Compliance
Special flight permits will not be issued.
Required actions
(1) The Manager, Safety Management Group, FAA, may approve AMOCs for this AD. Send your proposal to: Sharon Miles, Aviation Safety Engineer, Regulations and Policy Group, Rotorcraft Directorate, FAA, 2601 Meacham Blvd., Fort Worth, TX 76137; telephone (817) 222-5110; email sharon.y.miles@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.
Unsafe condition
For pitch links installed within the last 10 hours time-in-service (TIS), before further flight; for all other affected pitch links, within the next 10 hours TIS: (1) Remove the pitch link. (2) Clean the area around the spherical bearings and pitch link bearing bore chamfer. (3) Apply axial hand pressure to the faces of both spherical bearings as shown in Figure 1 to Paragraph (e) of this AD. ER23JY12.000 (4) Using an 8X or higher power magnifying glass, inspect the boundaries between the bearing and the bearing bore chamfer surface. Determine that the bearings have been completely swaged and there is no gap between the edge of the bearing and the chamfer as shown in Figure 2 to Paragraph (e) of this AD. ER23JY12.001 (5) If a bearing is not completely swaged or there is a gap between the edge of the bearing and the chamfer, as shown in Figure 3 to Paragraph (e) of this AD, replace the pitch link with an airworthy pitch link. ER23JY12.002
Affected ADs
This AD defines the unsafe condition as an improperly swaged spherical bearing on the pitch link, which could result in loss of tail rotor control and subsequent loss of control of the helicopter.
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