74-12-02 BEECH: Amendment 39-1857. Applies to Models 36 and A36 (Serial Numbers E-1 through E-434); Models 58 and 58A (Serial Numbers TH-1 through TH-335); Models 60 and A60 (Serial Numbers P-4 through P-240) aircraft.
Compliance: Required as indicated, unless already accomplished.
To provide the required structural level of occupant protection during minor crash conditions for those aircraft equipped with optional, aft-facing seats, within the next 100 hours' time in service after the effective date of this AD, accomplish the following:
Install two improved seat back supports on each aft-facing seat in accordance with Beechcraft Service Instruction No. 0591-314, Rev. 1, or later approved revisions or any equivalent approved by the Chief, Engineering and Manufacturing Branch, FAA, Central Region.
NOTE: Seat back supports, Beech P/N 58-530193-1 are applicable to Models 36, A36, 58, 58A, and 60 aircraft, and seat back supports, Beech P/N 58-530193-3 are applicable to Model A60 aircraft.
This amendment becomes effective June 5, 1974.