73-13-11 MITCHELL INDUSTRIES, INC., doing business as EDO-AIRE MITCHELL: Amendment 39-1677. Applies to Mitchell automatic pilot instruments installed in various Beech aircraft with a mechanical wing flap control system in accordance with the following Supplemental Type Certificates:
STC NO.
BEECH AIRPLANE MODELS
AUTOPILOT MODEL
SA1346SW
23, A23, A23A, A23-19, 19A, A24,
Century I
A24R, B19, M19A, A23-24, B23,C23
Model AK341
SA1348SW
23, A23, A23A, A23-19, 19A, B19,
Century IIB
M19A, A23-24, B23, C23, A24, A24R
Model AK342
Compliance required within the next ten (10) hours' time in service after the effective date of this AD, unless already accomplished.
To prevent interference of the flap control system with the automatic pilot roll servo, which may result in loss of aileron control, accomplish the following:
Remove the automatic pilot roll servo assembly and all servo installation brackets from the airplanes or install the cable tensioner Kit PKMB-8 in accordance with Edo-Aire Mitchell Service Bulletin No. MB-8 dated June 7, 1973, 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.
The bulletin mentioned herein may be obtained from Edo-Aire Mitchell, P. O. Box 610, Mineral Wells, Texas 76067.
This amendment becomes effective June 29, 1973.