Bell Helicopter Textron Canada (BHTC) 20
Bell Helicopter Textron Canada (BHTC) 206 and Agusta Bell 206 Series Helicopters
Bell Helicopter Textron Canada (BHTC) 206 and Agusta Bell 206 Series Helicopters
| AD/BELL 206/177 | Main Rotor - Pitch Horn Trunnion Bearing | 5/2009 TX |
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| Applicability: | AB206A and AB206B helicopters, all serial numbers, if fitted with trunnion bearings part number (P/N) 206-011-105-1. |
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| Requirement: | 1. Unless previously accomplished, inspect the installed trunnion bearings P/N206-011-105-1 to identify a missing lubrication passage as detailed in Agusta Alert BT 206-245 dated 20 March 2009.2. If it is identified that the lubrication passage is missing, replace the part with a serviceable bearing.3. Do not install trunnion bearings P/N 206-011-105-1 on any helicopter, unless inspected in accordance with Agusta Alert BT 206-245.The use of later approved revisions of this document is acceptable for compliance with the requirements of this AD.Note: EASA Emergency AD 2009-0067-E dated 20 March 2009 refers. |
| Compliance: | For Requirement 1 - Within 5 flight hours after the effective date of this AD and no later than 30 March 2009, whichever occurs first.For Requirement 2 - Before further flight.For Requirement 3 - After the effective date of this AD. |
| This Airworthiness Directive becomes effective on 25 March 2009. |
| Background: | There has been one case of a trunnion bearing, P/N 206-011-105-1, manufactured without the lubrication hole. This non-conformity, if not detected and corrected, would adversely affect the pitch horn proper functioning, which could lead to an unsafe condition. |
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Mark Sinclair
Delegate of the Civil Aviation Safety Authority
23 March 2009