79-21-03 BRITTEN-NORMAN (Bembridge) LTD.: Amendment 39-3588. Applies to BN-2A Mk III Series Trislander airplanes, certificated in all categories, which do not incorporate Britten-Norman modification NB/M/679.
Compliance is required prior to the accumulation of 1000 hours time in service or within 200 hours time in service after the effective date of this AD, whichever occurs later, unless already accomplished.
To prevent failure of the elevator trim tab cable and the possible resultant trim tab flutter, replace the existing elevator trim tab cables, P/Ns NB-45-B-2333, 2231, 2229 with new cables P/Ns NB-45-B-2747, 2749, 2745, respectively, in accordance with Britten-Norman Service Bulletin BN-2/SB.75, dated June 27, 1974, or an equivalent approved by the Chief, Aircraft Certification Staff, AEU-100, Federal Aviation Administration, c/o American Embassy, Brussels, Belgium.
This amendment becomes effective November 12, 1979.