71-05-05 BRITTEN NORMAN: Amdt. 39-1163. Applies to Britten Norman Models BN-2 and BN-2A series airplanes.
Compliance is required as indicated.
To prevent failure of the elevator trim control system, accomplish the following:
(a) Within the next 10 hours' time in service after the effective date of this AD unless already accomplished within the last 10 hours' time in service and thereafter at intervals not to exceed 20 hours' time in service since the last inspection remove the elevator trim jack assembly from the airplane and inspect the eye end, P/N AGS-590, for cracks using the dye penetrant method or an FAA approved equivalent.
(b) If the eye end is found to be cracked during the inspection required by paragraph (a), before further flight replace the cracked eye end with a serviceable eye end of same part number and continue the repetitive inspections required by paragraph (a), or replace the cracked eye end with a new eye end P/N NB45B2385 in accordance with paragraph(c).
(c) On or before February 15, 1971, replace the elevator trim jack eye end P/N AGS- 590 with a new eye end P/N NB45B2385 in accordance with Britten Norman Modification Leaflet BN-2NBM 468 dated January 21, 1971, or an FAA approved equivalent.
(d) The repetitive inspections required by paragraph (a) may be discontinued after the elevator trim jack eye end has been replaced in accordance with paragraph (c).
This amendment is effective upon publication in the Federal Register as to all persons except those persons to whom it was made immediately effective by the telegram dated January 26, 1971, which contained this amendment.