# AD 93-08-09: Airplane Flight Manual (AFM) Change - Nose Wheel - Type: Airworthiness directive - Status: Current - Products: M7 Aerospace SA227-AC (C-26A), SA227-AT, SA227-BC (C-26A), SA227-DC (C-26B) and SA227-TT - Effective: May 14, 1993 - Superseded by: Nothing supersedes this AD - Product type: Aircraft, Small/large airplane - Amendment: 39-8556 - Docket: 93-CE-28-AD - Registered aircraft: 117 may be affected, by airframe or engine model (OpenAirDocs) - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/21DA08EE4C47280C862569880073AADE.0001 - DRS record last changed: May 30, 2024 - Page: https://openairdocs.org/ad/93-08-09 ## The airworthiness directive 93-08-09 FAIRCHILD AIRCRAFT: Amendment 39-8556. Docket No. 93-CE-28-AD. Applicability: Models SA227-TT, SA227-AT, SA227-AC, and SA227-BC, airplanes (all serial numbers), certificated in any category that have the nose wheel steering system modified in accordance with Fairchild Service Bulletin (SB) 227-32-030, Issued: February 22, 1991, Revised: October 5, 1991; and Model SA227-DC airplanes (serial numbers 784 and 790 through 825), certificated in any category. Compliance: Required within the next 25 hours time-in-service, unless already accomplished. To prevent loss of directional control of the airplane during takeoff or landing caused by nose wheel steering malfunctions, accomplish the following: (a) For the Models SA227-TT, SA227-AT, SA227-AC, and SA227-BC airplanes, place a copy of this AD into the Limitations Section of the Airplane Flight Manual (AFM) in order to incorporate the following nose wheel steering system limitations: (1) Check the nose wheel steering prior to each takeoff using the procedures in the Normal Procedures section of the airplane flight manual. (2) The use of nose wheel steering for takeoff and landing is prohibited. Prior to each takeoff, turn the nose wheel arm switch to "OFF", and do not turn to "ON" until after landing and the airplane has slowed to taxi speed. (b) For the Model SA227-DC airplanes, incorporate FAA-Approved Model SA227-DC AFM Revision 8, dated April 2, 1993, into the Limitations Section of the AFM. This AFM revision specifies nose wheel steering limitations. (c) Special flight permits may be issued in accordance with FAR 21.197 and 21.199 to operate the airplane to a location where the requirements of this AD can be accomplished. (d) An alternative method of compliance or adjustment of the compliance time that provides an equivalent level of safety may be approved by the Manager, Airplane Certification Office, FAA, Fort Worth, Texas 76193-0150. The request shall be forwarded through an appropriate FAA Maintenance Inspector, who may add comments and then send it to the Manager, Fort Worth Airplane Aircraft Certification Office. NOTE: Information concerning the existence of approved alternative methods of compliance with this AD, if any, may be obtained from the Fort Worth Airplane Certification Office. (e) All persons affected by this directive may obtain a copy of the document referenced from Fairchild Aircraft, P.O. Box 790490, San Antonio, Texas 78279-0490; or may examine information related to this AD at the FAA, Central Region, Office of the Assistant Chief Counsel, Room 1558, 601 E. 12th Street, Kansas City, Missouri 64106. (f) This amendment becomes effective on May 14, 1993. ## Affected data sheets (3) (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: SA227-AT, SA227-TT - [TCDS A8SW](https://openairdocs.org/tcds/A8SW): Ontic Engineering and Manufacturing Inc.; names 2 of 4 models: SA227-AC (C-26A), SA227-BC (C-26A) - [TCDS A18SW](https://openairdocs.org/tcds/A18SW): Ontic Engineering and Manufacturing Inc.; names 1 of 2 models: SA227-DC (C-26B) ## 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: 117 (117 by airframe model, 0 by engine model) - Makers: Fairchild 86, Swearingen 31 Models with the most aircraft: - [Fairchild SA227-AC](https://openairdocs.org/model/fairchild-sa227-ac): 54 aircraft (airframe model) - [Fairchild SA227-DC](https://openairdocs.org/model/fairchild-sa227-dc): 12 aircraft (airframe model) - [Swearingen SA227-AT](https://openairdocs.org/model/swearingen-sa227-at): 12 aircraft (airframe model) - [Swearingen SA227-TT](https://openairdocs.org/model/swearingen-sa227-tt): 11 aircraft (airframe model) - [Fairchild SA227-AT](https://openairdocs.org/model/fairchild-sa227-at): 9 aircraft (airframe model) - [Fairchild SA227-DC (C26B)](https://openairdocs.org/model/fairchild-sa227-dc-c26b): 8 aircraft (airframe model) - [Swearingen SA227-AC](https://openairdocs.org/model/swearingen-sa227-ac): 8 aircraft (airframe model) - [Fairchild SA227BC](https://openairdocs.org/model/fairchild-sa227bc): 3 aircraft (airframe model) All 8 models: https://openairdocs.org/ad/93-08-09/models.md Every aircraft: https://openairdocs.org/ad/93-08-09/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.