Airworthiness directives › 2019-06-04
AD 2019-06-04 Airworthiness Directives; Bell Helicopter Textron Canada Limited Helicopters
Applicability*9
This AD becomes effective May 7, 2019.
Compliance
(1) The Manager, Safety Management Section, Rotorcraft Standards Branch, FAA, may approve AMOCs for this AD. Send your proposal to: David Hatfield, Aviation Safety Engineer, Safety Management Section, Rotorcraft Standards Branch, FAA, 10101 Hillwood Pkwy., Fort Worth, TX 76177; telephone (817) 222-5110; email 9-ASW-FTW-AMOC-Requests@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
The subject of this AD is addressed in Transport Canada AD No. CF-2016-39, dated December 12, 2016. You may view the Transport Canada AD on the internet at http://www.regulations.gov in Docket No. FAA-2017-0433.
Unsafe condition
Within 20 hours time-in-service (TIS) and thereafter at intervals not to exceed 50 hours TIS: (1) Inspect the upper and lower pitch link rod ends for axial and radial bearing play by rolling the bearings through all angles, paying particular attention to the areas depicted in Figure 1 of Bell Helicopter Alert Service Bulletin 429-11-03, Revision A, dated January 13, 2015. (2) If there is any play in a bearing, remove the pitch link assembly and perform a dimensional inspection of the axial and radial bearing play. Measure the play at the angle that results in the maximum amount of play. Replace the rod end assembly before further flight if bearing play exceeds 0.010 inch for axial direction or 0.005 inch for radial direction.
Affected ADs
This AD defines the unsafe condition as a worn bearing. This condition could result in failure of a bearing, which could lead to reduced helicopter handling, damage to other components, and subsequent loss of helicopter control.
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