Airworthiness directives › 2012-22-11
AD 2012-22-11 Airworthiness Directives; Bell Helicopter Textron Helicopters
Applicability*9
This AD becomes effective December 20, 2012.
Compliance
(1) The Manager, Rotorcraft Certification Office, FAA, may approve AMOCs for this AD. Send your proposal to: Martin Crane, Aerospace Engineer, Rotorcraft Certification Office, Rotorcraft Directorate, FAA, 2601 Meacham Blvd., Fort Worth, Texas 76137, telephone (817) 222-5170, email martin.r.crane@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
Joint Aircraft Service Component (JASC) Code: 6230, Main Rotor.
Unsafe condition
Within 25 hours time-in-service (TIS) or 30 days, whichever occurs first, and thereafter at intervals not to exceed 100 hours TIS: (1) Using cleaning compound (C-318) or equivalent, thoroughly clean the collective lever. (2) Using a 10X or higher power magnifying glass, inspect the collective lever in the areas shown in Figure 1 of Bell Helicopter Textron Alert Service Bulletin (ASB) 412-11-148, Revision A, dated December 12, 2011 or Bell Helicopter Textron ASB 412CF-11-47, Revision A, dated December 12, 2011, as appropriate for your model helicopter. (3) If there is a crack in the paint, remove the collective lever from the swashplate assembly. (i) Remove paint and primer from the area around the crack. (ii) Fluorescent penetrant inspect the area of the crack. (4) If there is a crack in the collective lever, before further flight, replace the collective lever with an airworthy collective lever.
Affected ADs
This AD defines the unsafe condition as a cracked collective lever, which could result in failure of the collective lever and subsequent loss of control of the helicopter.
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