AD 70-06-05

70-06-05 BRITTEN-NORMAN, LTD: Amdt. 39-956. Applies to BN-2 and BN-2A airplanes. To prevent failure of the elevator trim system final drive lever attachment lugs, accomplish the following: (a) Within the next 10 hours' time in service after the effective date of this AD, unless already accomplished, and thereafter at intervals not to exceed 25 hours' time in service since the last inspection until the modifications of paragraph (b) have been accomplished, visually inspect the elevator trim system final drive lever (P/N NB-45-D-1823) for cracks in accordance with Britten-Norman Service Bulletin No. BN-2/SB.24 dated January 8, 1969, or later ARB-approved issue or an FAA-approved equivalent. (b) If cracks are found on the drive lever during the inspections required by paragraph (a), before further flight replace the affected lever (P/N NB-45-D-1823) with a new lever (P/N NB-45-D-2165) by incorporating Modification NB/M/394 in accordance with Britten- Norman Service Bulletin BN-2/SB.24 dated January 8, 1969, or later ARB-approved issue or an FAA-approved equivalent. (c) The repetitive inspections required by paragraph (a) may be discontinued after compliance with paragraph (b) has been accomplished. This amendment becomes effective March 17, 1970.