82-23-06 FAIRCHILD SWEARINGEN: Amendment 39-4493. Applies to Models SA 226-T(B) (S/N T(B) 276, T(B) 292 through T(B) 397); SA 226-T (S/N T201 through T275 and T277 through T291); SA 226-AT (S/N AT001 through AT074); SA 226-TC (S/N TC201 through TC396) airplanes certificated in any category.
COMPLIANCE: Required within the next 50 hours time-in-service unless already accomplished.
To prevent the main landing gear doors from shifting and locking the gear in the up position, accomplish the following:
(a) Inspect, check, and modify the main landing gear door installation in accordance with Accomplishment Instructions IIA through IIL of Fairchild Swearingen Service Bulletin SB 32-026 dated October 16, 1980, as supplemented by the instructions below.
(1) When replacing the bushings and refitting the doors for final assembly, assure that the bushings are properly lubricated (do not use thin-film, spray-on liquids which will wash out the grease from the Oilite bushings; use a thick, permanent lubricant such as Lubriplate).
(2) Observe standard torque for AN3 bolts.
(3) Assure that the door hinge bolts clamp completely and the doors move freely.
(4) Remove stripped nutplates and replace them with a castellated nut and cotter pin. Instructions for accomplishing this may be obtained from Fairchild Swearingen Corporation. Use of the drilled bolt and safety wire procedures specified in paragraphs IIG and IIJ of Fairchild Swearingen Service Bulletin SB 32-026 is not required if a castellated nut and cotter pin are used.
(b) Airplanes may be flown in accordance with FAR 21.197 to a location where this AD may be accomplished.
(c) An equivalent method of compliance with this AD may be used when approved by the Manager, Aircraft Certification Division, ASW-100, Southwest Regional Office, FAA, Fort Worth, Texas 76101; telephone (817) 624-4911, extension 511.
This amendment becomes effective on November 15, 1982.