70-12-11 BRITTEN-NORMAN, LTD: Amdt. 39-1006. Applies to BN-2 and BN-2A airplanes, serial numbers up to and including S/N C231.
Compliance is required within the next 50 hours' time in service after the effective date of this AD, unless already accomplished.
To prevent failure of the flap actuating system, replace flap lever drive attachment bolt P/N A111-6G with a serviceable bolt, P/N A111-9G, and replace the flap center operating lever P/N NB-45-D-997 with either -
(1) A serviceable flap center operating lever P/N NB-45-D-997 modified and remarked as P/N NB-45-D-2173 (MOD.NB/M/417) in accordance with Britten Norman Modification Leaflet No. BN-2/NB/M/417, Part 2, Issue 1, dated April 8, 1970, or a later ARB- approved issue or an FAA-approved equivalent; or
(2) A serviceable flap center operating lever P/N NB-45-D-2173.
This amendment becomes effective June 11, 1970.