AD 72-02-06

72-02-06 MITCHELL INDUSTRIES, INC., doing business as EDO-AIRE MITCHELL: Amdt. 39-1383. Applies to Mitchell automatic pilot instruments installed in various Cessna aircraft in accordance with the following Supplemental Type Certificates:

AUTOPILOT MODEL STC NUMBER AIRCRAFT MAKE AND MODE AK086 SA20SW Cessna 210B and C AK086R SA20SW Cessna 210B and C AK086E SA20SW Cessna 210B and C AK088 SA27SW Cessna 182E and F AK088R SA27SW Cessna 182E and F AK088E SA27SW Cessna 182E and F AK110 SA101SW Cessna 182E, F and G AK110E SA101SW Cessna 182E, F and G AK110E-3 SA101SW Cessna 182E, F and G AK112 SA89SW Cessna 210B and C AK120 SA149SW (Cessna 210-5, 210-5A,) AK120E SA149SW ( 206, P206, ) AK120E-3 SA149SW ( and U206, ) AK126 SA330SW Cessna 210D and E AK126E SA330SW Cessna 210D and E AK126E-3 SA330SW Cessna 210D and E AK154 SA489SW Cessna 182H AK154E SA489SW Cessna 182H AK154E-3 SA489SW Cessna 182HAK155 SA491SW Cessna 337 AK155E SA491SW Cessna 337 AK155E-3 SA491SW Cessna 337

Compliance required within the next ten (10) hours' time in service after the effective date of this AD, unless already accomplished.

To prevent fatigue failure of the control wheel shaft with possible resultant loss of aileron and elevator control, accomplish the following:

Remove the Mitchell automatic pilot instrument servo, inspect the control wheel shaft, take corrective action as necessary, and reassemble in accordance with Edo-Aire Mitchell Service Bulletin No. MB-6 dated October 29, 1971, or later FAA approved revision, or any other method approved by the Chief, Engineering and Manufacturing Branch, Southwest Region, Federal Aviation Administration, Fort Worth, Texas.

NOTE: The Mitchell automatic pilot instrument servo may be reinstalled in accordance with Edo-Aire Mitchell Service Letter ML-32 dated December 22, 1971, or later FAA approved revision, or any other methodapproved by the Chief, Engineering and Manufacturing Branch, Southwest Region, Federal Aviation Administration, Fort Worth, Texas.

The bulletin and letter mentioned herein may be obtained from Edo-Aire Mitchell, P. O. Box 610, Mineral Wells, Texas 76067.

This amendment becomes effective January 31, 1972.