AD/CESSNA 170/74 - KAP 140 Autopilot System (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 39.1 (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.

Cessna 170, 172, F172, FR172 and 175 Series Aeroplanes

AD/CESSNA 170/74 KAP 140 Autopilot System 10/2004

Applicability: Cessna 172 R and 172S model aeroplanes listed below that are equipped with a Honeywell KAP 140 autopilot computer system, part number (P/N) 065-00176-2501, 065-00176-5001, 065-00176-5101 or 065-00176-5201, all serial numbers.

Model

172R

172S

Serial Numbers

17280001 through 17281073, 17281075 through 17281127 and 17281130 172S8001 through 172S9195, 172S9197, 172S9198 and 172S9200 through 172S9203

Note 1: The KAP 140 P/Ns listed above are in addition to those listed in AD/CESSNA 170/73

Requirement: 1. Install the update to the KC 140 autopilot computer system operating software by following Honeywell Installation Bulletin No. 491, Rev. 3, dated April 2003; Cessna Service Bulletin (SB) SB02-22-01, dated 25 November 2002 and Honeywell SB No. KC 140-M1, dated August 2002.

2. KC 140 autopilot computer systems P/Ns 065-00176-2501, 065-00176-5001, 065-00176-5101 or 065-00176-5201 may not be installed on any Cessna Model 172R or 172S aeroplanes as a replacement part unless the computer has been modified as specified in Requirements 1 of this Directive.