# AD 70-15-18: Automatic Pilot and Automatic Aileron Stabilizer Instruments - Type: Airworthiness directive - Status: Current - Products: Mitchell Industries Auto Pilot Systems Instruments - Effective: August 31, 1970 - Superseded by: Nothing supersedes this AD - Product type: Appliance - Amendment: 39-1046 - FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/3137663EE2FCE55186256A3300561476.0001 - DRS record last changed: May 30, 2024 - Page: https://openairdocs.org/ad/70-15-18 ## The airworthiness directive 70-15-18 MITCHELL INDUSTRIES, INC., doing business as EDO-AIRE MITCHELL: Amendment 39-1046. Applies to the Mitchell Century II, Century III (Serial Numbers 624 and below) and Stabilizer, automatic pilot and automatic aileron stabilizer instruments, and to Piper AutoControl III, Altimatic III and AutoFlite automatic pilot and automatic aileron stabilizer instruments installed in various light aircraft in accordance with the following Supplemental Type Certificates: AIRCRAFT MAKE SUPPLEMENTAL TYPE CERTIFICATE NUMBERS Aero Commander SA680SW Beech SA617SW SA742SW SA755SW SA800SW SA638SW SA745SW SA761SW SA824SW SA651SW SA754SW SA767SW SA837SW Cessna SA603SW SA624SW SA668SW SA784SW (See also Wren) SA606SW SA637SW SA669SW SA789SW SA607SW SA658SW SA709SW SA795SW SA621SW SA667SW SA737SW SA829SW deHavilland (See Riley 400) Helio SA615SW Maule SA693SW Piper SA511SW SA540SW SA596SW SA757SW SA525SW SA566SWSA662SW SA822SW SA532SW SA576SW SA707SW SA862SW SA533SW SA581SW SA756SW SA921SW Riley 400 (deHavilland modified per STC's SA120SO, SE163SO and SA164SO) SA676SW Wren (Cessna modified per SA791SW STC No. SA485SW) Compliance required within the next 25 hours' time in service after the effective date of this AD, unless already accomplished. To prevent slippage of servo bridle cable clamps and resultant binding of the control system, accomplish the following: Remove Servo Bridle Cable Clamps, Mitchell P/N 42A173 or 42A184, as applicable, and replace with new Servo Bridle Cable Clamps, Mitchell P/N 42A173-1 or 42A184-1, as applicable, in accordance with the installation instructions in Mitchell Industries, Inc. Service Bulletin No. MB-1 dated 2-11-68, revised as Edo-Aire Mitchell Service Bulletin No. MB-1 dated 6-1-70, or later FAA approved revision, or in accordance with instructions approved by the Chief, Engineering and Manufacturing Branch, Flight Standards Division, Southwest Region, Federal Aviation Administration. The revised bulletin may be obtained from Edo-Aire Mitchell, P.O. Box 610, Mineral Wells, Texas 76067. This Amendment becomes effective August 31, 1970. ## Registered aircraft it may apply to (OpenAirDocs) No registered aircraft matched the models it names. ## Related documents - [STC SA120SO](https://openairdocs.org/stc/SA120SO): Instrument panel.. Riley Turbostream Corp, Cited in the text - [STC SA164SO](https://openairdocs.org/stc/SA164SO): Installation of sNM-Lpt vertical tail, wing tips and elevator (STC SA303CE-A is prerequisite to this STC); in- stallation of Lycoming IO-720-A1A engines (STC SE163CE-A) and Hartzell HC-A3VK-2/V8433-4R propellers.. Riley Turbostream Corp, Cited in the text - [STC SA485SW](https://openairdocs.org/stc/SA485SW): For 182H, 182J, 182K, 182L and 182M include (1) Full span double slotted flaps; (2) Drooped wing leading edge; (3) Aileron actuated drag plates; (4) Nose control surface; (5) Elevator down spring alteration; (6) Relocated pitot head. For 182N, 182P, and 182Q include nose control surface only.. Todd and Jo Peterson, Cited in the text - [STC SA511SW](https://openairdocs.org/stc/SA511SW): Installation of Mitchell Automatic Flight System Model AK153 consisting of Automatic Aileron Stabilizer. Mitchell Industries, Inc, Cited in the text - [STC SA525SW](https://openairdocs.org/stc/SA525SW): Installation of Piper Automatic Flight System Model AK161 consisting of autocontrol III with optional Radio Coupler. Mitchell Industries Inc, Cited in the text - [STC SA532SW](https://openairdocs.org/stc/SA532SW): Installation of Mitchell automatic aileron stabilizer model AK173.. Century Flight Systems Inc, Cited in the text - [STC SA533SW](https://openairdocs.org/stc/SA533SW): Installation of Mitchell automatic flight system model AK174 consisting of autocontrol IIIB autopilot with optional radio coupler.. Century Flight Systems Inc, Cited in the text - [STC SA576SW](https://openairdocs.org/stc/SA576SW): Installation of Mitchell automatic flight system model AK186 consisting of Piper altimatic IIIB autopilot radio coupler, and automatic aileron stabilizer model AK179.. Century Flight Systems Inc, Cited in the text - [STC SA581SW](https://openairdocs.org/stc/SA581SW): Installation of Mitchell Automatic Aileron Stabilizer Model AK179.. Century Flight Systems Inc, Cited in the text - [STC SA596SW](https://openairdocs.org/stc/SA596SW): Installation of Mitchell Automatic Flight System Model AK183 consisting of Piper Altimatic IIIB Autopilot with optional Command/Automatic Electric Pitch Trim System, AutoFlite and Radio Coupler. Century Flight Systems Inc, Cited in the text - [STC SA603SW](https://openairdocs.org/stc/SA603SW): Installation of Mitchell automatic flight system model AK191 consisting of Century II and radio coupler and model AK192 automatic aileron stabilizer.. Century Flight Systems Inc, Cited in the text - [STC SA607SW](https://openairdocs.org/stc/SA607SW): Installation of Mitchell automatic aileron stabilizer model AK193.. Century Flight Systems Inc, Cited in the text - [STC SA615SW](https://openairdocs.org/stc/SA615SW): Installed Brittain/Clarkson Autopilot. Brittain Industries, Inc, Cited in the text - [STC SA617SW](https://openairdocs.org/stc/SA617SW): Installation of Mitchell automatic flight system Model AK194 consisting of Century III auto-pilot with optional automatic pitch trim system, automatic aileron stabilizer and radio coupler.. Century Flight Systems Inc, Cited in the text - [STC SA621SW](https://openairdocs.org/stc/SA621SW): Installation of Mitchell automatic flight system Model AK198, consisting of Century III autopilot with optional automatic pitch trim, automatic aileron stabilizer and radio coupler.. Century Flight Systems Inc, Cited in the text - [STC SA624SW](https://openairdocs.org/stc/SA624SW): Installation of Mitchell automatic flight system Model AK197 consisting of Century III autopilot with optional automatic pitch trim, automatic aileron stabilizer, radio coupler and glide slope coupler.. Century Flight Systems Inc, Cited in the text - [STC SA637SW](https://openairdocs.org/stc/SA637SW): Installation of Mitchell automatic flight system Model AK209 consisting of Century III autopilot with optional automatic pitch trim, automatic aileron stabilizer and radio coupler.. Century Flight Systems Inc, Cited in the text - [STC SA638SW](https://openairdocs.org/stc/SA638SW): Installation of Mitchell automatic flight system Model AK202,consisting of Century III autopilot with optional automatic pitch trim and radio coupler.. Century Flight Systems Inc, Cited in the text - [STC SA651SW](https://openairdocs.org/stc/SA651SW): Installation of Mitchell automatic flight system Model AK206,consisting of Century III autopilot with optional automatic pitch trim, automatic aileron stabilizer, and radio coupler.. Century Flight Systems Inc, Cited in the text - [STC SA658SW](https://openairdocs.org/stc/SA658SW): Installation of Mitchell automatic flight system Model AK199 consisting of Century II autopilot with optional aileron stabilizer and radio coupler.. Century Flight Systems Inc, Cited in the text - [STC SA667SW](https://openairdocs.org/stc/SA667SW): Installation of Mitchell automatic flight system Model AK222, consisting of Century III autopilot, optional command/automatic trim system automatic aileron stabilizer, radio coupler and glide slope coupler.. Century Flight Systems Inc, Cited in the text - [STC SA668SW](https://openairdocs.org/stc/SA668SW): Installation of Mitchell automatic flight system Model AK210 consisting of Century III autopilot automatic pitch trim, automatic aileron stabilizer and radio coupler.. Century Flight Systems Inc, Cited in the text - [STC SA669SW](https://openairdocs.org/stc/SA669SW): Installation of Mitchell automatic flight system Model AK218 consisting of Century III autopilot with optional automatic pitch trim, automatic aileron stabilizer and/or radio coupler.. Century Flight Systems Inc, Cited in the text - [STC SA676SW](https://openairdocs.org/stc/SA676SW): Mitchell AK219 automatic flight system consisting of Century III autopilot with optional automatic pitch trim and radio coupler.. Century Flight Systems Inc, Cited in the text - [STC SA680SW](https://openairdocs.org/stc/SA680SW): Installation of Mitchell automatic flight system model AK221 consisting of Century III autopilot with optional automatic pitch trim, radio coupler, and glide slope coupler.. Century Flight Systems Inc, Cited in the text - [STC SA693SW](https://openairdocs.org/stc/SA693SW): Installation of Mitchell automatic flight system Model AK223 consisting of Century II autopilot with automatic aileron stabilizer and radio coupler.. Century Flight Systems Inc, Cited in the text - [STC SA707SW](https://openairdocs.org/stc/SA707SW): Installation of Mitchell Automatic Flight System Model AK243 Century III autopilot with optional Automatic pitch trim, radio coupler, and automatic aileron stabilizer. Mitchell Industries Inc, Cited in the text - [STC SA709SW](https://openairdocs.org/stc/SA709SW): Installation of Mitchell automatic aileron stabilizer Model AK229.. Century Flight Systems Inc, Cited in the text - [STC SA737SW](https://openairdocs.org/stc/SA737SW): Installation of Mitchell automatic flight system Model AK201 consisting of Century II autopilot with optional automatic aileron stabilizer and radio coupler.. Century Flight Systems Inc, Cited in the text - [STC SA742SW](https://openairdocs.org/stc/SA742SW): Installation of Mitchell automatic flight system Model AK196consisting of Century II autopilot with optional automatic aileron stabilizer and radio coupler.. Century Flight Systems Inc, Cited in the text - [STC SA745SW](https://openairdocs.org/stc/SA745SW): Installation of Mitchell automatic flight system AK235, Century III autopilot with optional pitch trim and/or radio coupler.. Century Flight Systems Inc, Cited in the text - [STC SA754SW](https://openairdocs.org/stc/SA754SW): Installation of Mitchell automatic aileron stabilizer Model AK203.. Century Flight Systems Inc, Cited in the text - [STC SA755SW](https://openairdocs.org/stc/SA755SW): Installation of Mitchell automatic aileron stabilizer Model AK226.. Century Flight Systems Inc, Cited in the text - [STC SA756SW](https://openairdocs.org/stc/SA756SW): Installation of Mitchell automatic flight system model AK236, consisting of Century II autopilot with optional radio coupler.. Century Flight Systems Inc, Cited in the text - [STC SA757SW](https://openairdocs.org/stc/SA757SW): Installation of Mitchell automatic flight system model AK234 consisting of Century II autopilot with optional radio coupler.. Century Flight Systems Inc, Cited in the text - [STC SA761SW](https://openairdocs.org/stc/SA761SW): Installation of Mitchell automatic flight model AK238 consisting of Century III autopilot with optional automatic pitch trim and radio coupler.. Century Flight Systems Inc, Cited in the text - [STC SA767SW](https://openairdocs.org/stc/SA767SW): Installation of Mitchell automatic flight system Model AK239 consisting of Century III autopilot with optional automatic pitch trim system and radio coupler.. Century Flight Systems Inc, Cited in the text - [STC SA784SW](https://openairdocs.org/stc/SA784SW): Mitchell automatic flight system Model AK240 consisting of Century III autopilot with optional automatic pitch trim and radio coupler.. Century Flight Systems Inc, Cited in the text - [STC SA789SW](https://openairdocs.org/stc/SA789SW): Installation of Mitchell automatic aileron stabilizer Model AK204.. Century Flight Systems Inc, Cited in the text - [STC SA791SW](https://openairdocs.org/stc/SA791SW): Installation of Mitchell automatic flight system Model AK243 Century II autopilot with optional radio coupler.. Century Flight Systems Inc, Cited in the text - [STC SA795SW](https://openairdocs.org/stc/SA795SW): Installation of Mitchell automatic flight system Model AK241 consisting of Century II autopilot with optional automatic aileron stabilizer and radio coupler.. Century Flight Systems Inc, Cited in the text - [STC SA800SW](https://openairdocs.org/stc/SA800SW): Installation of Mitchell automatic flight system model AK245 consisting of Century II autopilot with optional radio coupler.. Century Flight Systems Inc, Cited in the text - [STC SA822SW](https://openairdocs.org/stc/SA822SW): Installation of Mitchell automatic flight system model AK253 consisting of Century III autopilot with optional automatic pitch trim, automatic aileron stabilizer and radio coupler.. Century Flight Systems Inc, Cited in the text - [STC SA824SW](https://openairdocs.org/stc/SA824SW): Installation of Mitchell automatic flight system Model AK248 consisting of Century II autopilot with optional radio coupler.. Century Flight Systems Inc, Cited in the text - [STC SA829SW](https://openairdocs.org/stc/SA829SW): Mitchell automatic flight system AK254 Century III autopilot with optional automatic pitch trim, aileron stabilizer, and radio coupler.. Century Flight Systems Inc, Cited in the text - [STC SA837SW](https://openairdocs.org/stc/SA837SW): Installation of Mitchell automatic flight system model AK255,consisting of Century III autopilot with optional automatic pitch trim and radio coupler.. Century Flight Systems Inc, Cited in the text - [STC SA862SW](https://openairdocs.org/stc/SA862SW): Installation of Piper automatic flight system model AK187 consisting of altimatic III B-1 autopilot with optional automatic pitch trim, automatic aileron stabilizer, radio coupler, glide slope coupler, and optional radio coupler model 1C388-3.. Century Flight Systems Inc, Cited in the text - [STC SA921SW](https://openairdocs.org/stc/SA921SW): Mitchell automatic flight system AK242 consisting of Century III autopilot with optional automatic pitch trim and radio coupler.. Century Flight Systems Inc, Cited in the text - [STC SE163SO](https://openairdocs.org/stc/SE163SO): Two Rajay trubochargers 325E10.. Riley Intl Corp, Cited in the text --- 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.