# AD 82-23-06: Main Landing Gear Door Installation - Type: Airworthiness directive - Status: Current - Products: M7 Aerospace SA226-AT, SA226-T, SA226-TC and SA226-T(B) - Effective: November 15, 1982 - Superseded by: Nothing supersedes this AD - Product type: Aircraft, Small/large airplane - Amendment: 39-4493 - Registered aircraft: 54 may be affected, by airframe or engine model (OpenAirDocs) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/1CBECD0E9687ADF18625698400724D90.0001 - DRS record last changed: May 30, 2024 - Page: https://openairdocs.org/ad/82-23-06 ## The airworthiness directive 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. ## Affected data sheets (2) (OpenAirDocs) The type certificate data sheets whose models the AD names. - [TCDS A5SW](https://openairdocs.org/tcds/A5SW): Ontic Engineering and Manufacturing Inc.; names 2 of 7 models: SA226-AT, SA226-T(B) - [TCDS A8SW](https://openairdocs.org/tcds/A8SW): Ontic Engineering and Manufacturing Inc.; names 1 of 4 models: SA226-TC ## Registered aircraft it may apply to (OpenAirDocs) Matched by airframe and engine model; the AD's applicability may narrow it by serial number, part number or equipment. - Aircraft: 54 (54 by airframe model, 0 by engine model) - Makers: Swearingen 48, Fairchild 6 Models with the most aircraft: - [Swearingen SA-226T](https://openairdocs.org/model/swearingen-sa-226t): 21 aircraft (airframe model) - [Swearingen SA226-T(B)](https://openairdocs.org/model/swearingen-sa226-t-b): 16 aircraft (airframe model) - [Swearingen SA226TC](https://openairdocs.org/model/swearingen-sa226tc): 8 aircraft (airframe model) - [Fairchild SA226-T(B)](https://openairdocs.org/model/fairchild-sa226-t-b): 3 aircraft (airframe model) - [Swearingen SA-226AT](https://openairdocs.org/model/swearingen-sa-226at): 3 aircraft (airframe model) - [Fairchild SA226-TC](https://openairdocs.org/model/fairchild-sa226-tc): 1 aircraft (airframe model) - [Fairchild SA226-T](https://openairdocs.org/model/fairchild-sa226-t): 1 aircraft (airframe model) - [Fairchild SA226-AT](https://openairdocs.org/model/fairchild-sa226-at): 1 aircraft (airframe model) All 8 models: https://openairdocs.org/ad/82-23-06/models.md Every aircraft: https://openairdocs.org/ad/82-23-06/aircraft.md Its text cites no advisory circulars or STCs. --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.