AD 69-16-04

69-16-04 FAIRCHILD: Amdt. 39-814. Applies to F-27 airplanes Serial Nos. 1 through 128 and FH-227 airplanes Serial Nos. 501 through 518 and 520 through 578, certificated in all categories.

To prevent hazards associated with the spring loading of the main landing gear door trolley mechanism, and to prevent overtravel of the main landing gear doors during retraction, accomplish the following:

(a) Within the next 100 hours' time in service after the effective date of this AD, unless already accomplished, modify the door trolley locking lever as described in Fairchild Hiller F-27 Service Bulletin 32-73 dated February 25, 1969, for F-27 aircraft and Fairchild Hiller FH-227 Service Bulletin 32-15 dated February 25, 1969, for FH-227 aircraft or equivalent modifications approved by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region.

(b) Within the next 100 hours' time in service after the effective date of this AD, unless already accomplished, modify the main landing gear doors as described in Fairchild Hiller F-27 Service Bulletin 32-74 dated April 10, 1969, for F-27 aircraft and Fairchild Hiller FH-227 Service Bulletin 32-17 dated April 10, 1969, for FH-227 aircraft or equivalent modifications approved by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region.

(c) The compliance times may be increased by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region, upon receipt of substantiating data submitted through an FAA maintenance inspector.

This amendment is effective September 1, 1969.