Document ID: chunk:federal_register_of_legislation:F2006B05002:reg:172r
Version: federal_register_of_legislation:F2006B05002
Segment Type: reg
Provision Reference: reg 172R
Character Range: 1059–3849

172R

172S

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

              Requirement: 1. Unless previously accomplished, install and update the KC 140 autopilot computer system operating software in accordance with Honeywell Service Bulletin KC 140-M1 dated August 2002, as specified in Cessna Service Bulletin SB02-22-01 dated 25 November 2002.

              2.         Following Requirement 1 software installation, re-identify the KC-140 unit as follows:

                  1. Change the unit part number by attaching flavour sticker, P/N 057-02203- 0003, on the unit's serial tag;

b.        Attach an M decal, P/N 057-02984-0501, in front of the unit's serial number (this indicates that the unit's P/N has been changed); and

c.         Attach a software mod tag, P/N 057-05287-0301, in place of the old tag to indicate the software change to SW MOD 03/01.

              3. KC 140 autopilot computer systems P/Ns 065-00176-2602, 065-00176-5402 and 065-00176-7702 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 and 2 of this Directive.

            Note: FAA AD 2003-24-13 Amdt 39-13382 refers.

            Compliance: For Requirement 1 - Within 100 hours time in service after the effective date of this Directive.

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

 AD/CESSNA 170/73 (continued)

            For Requirement 2 - Before further flight after installing the update to the KC 140 autopilot computer system operating software.

            For Requirement 3 - As of the effective date of this Directive.

            This Airworthiness Directive becomes effective on 19 February 2004.

            Background: The United States Federal Aviation Administration (FAA) has received reports of inadvertent and undetected engagement of the autopilot system in Cessna Models 172R, 172S, 182S, 182T, T182T, 206H, and T206H aeroplanes. These aeroplanes are equipped with a Honeywell KAP 140 autopilot computer system installed in the centre instrument control panel near the throttle.

            This Directive requires the installation of an update to the operating software of the KAP 140 autopilot computer system, a change to the unit's part number and change of the software modification identification tag. These actions prevent unintentional engagement of the KAP 140 autopilot computer system, which could cause the pilot to take inappropriate actions.

 David Villiers
 Delegate of the Civil Aviation Safety Authority 7 January 2004

 The above AD is notified in the Commonwealth of Australia Gazette on 28 January 2004.