AD/INST/55 - Garmin GSM 85 Servo Gearbox (Cth)

AIRWORTHINESS DIRECTIVE For the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.001(1) of CASR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.

Instruments and Automatic Pilots AD/INST/55 Garmin GSM 85 Servo Gearbox 3/2008 DM

Applicability: All aircraft fitted with GARMIN GSM 85 servo gearbox units, part number (P/N): 011-00894-00, 011-00894-02, 011-00894-04, 011-00894-06, 011-00894-07, 011-00894-08, 011-00894-09, 011-00894-10, 011-00894-11 and 011-00894-14.

Note 1: GSM 85 servo gearbox units are known to be installed in, but not limited to, the following aeroplanes.

(i) Cessna Aircraft Company 182T, T182T, 206H, and T206H

(ii) Hawker Beechcraft Corporation G36 and G58

(iii) Diamond Aircraft Industries GmbH DA40 and DA40F

(iv) Columbia Aircraft Manufacturing 350 and 400

(v) Mooney Airplane Company, Inc. M20M and M20R Requirement: 1. Check the serial tag of the installed GSM 85 servo gearbox unit to determine the modification level. The modification (mod) level marked on the serial tag indicates if the GSM 85 servo gearbox unit is already in compliance with this AD.

(a) If the serial tag on the installed GSM 85 servo gearbox unit for P/Ns 011-00894-00 or 011-00894-10 is marked at mod level 3, no further action is required.