Document ID: chunk:federal_register_of_legislation:F2006B10846:body:0
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COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 107 CIVIL AVIATION SAFETY AUTHORITY
    SCHEDULE OF AIRWORTHINESS DIRECTIVES

    Instruments and Automatic Pilots

AD/INST/42 KSA 470 Autopilot Servo Actuator 7/98

               Applicability: Allied Signal Bendix/King Model KSA-470 autopilot servo actuators, part numbers 065-0076-10 through 065-0076-15, serial numbers 0001 through 3081 inclusive.

               Note: The actuators are known to be fitted to, but not limited to the aircraft listed below:

         Aircraft Flight          Part Number                   Location
                                   Director/Auto pilot System
Raytheon (Beech) 400 Series        KFC 400                      065-0076-11   Yaw Axis
                                                                065-0076-15   Roll Axis
Raytheon (Beech) 200 Series        KFC 400                      065-0076-11   Yaw Axis
Raytheon (Beech) 300 Series        KFC 400                      065-0076-15   Yaw Axis
Dassault Falcon 20                 KFC 400                      065-0076-15   Pitch Axis
                                                                065-0076-15   Roll Axis
Fairchild C26A/C26B                KFC 400                      065-0076-11   Yaw Axis
Fairchild SA227- AC/AT/BC/CC/DC    KFC 400                      065-0076-15   Roll Axis
Learjet 31A                        KFC 3100                     065-0076-12   Pitch Axis
                                                                065-0076-14   Yaw Axis
                                                                065-0076-15   Roll Axis
Lockheed (Grumman) S-2 Tracker     KFC 325                      065-0076-10   Special
Piper 400LS and PA-42-1000         KFC 400                      065-0076-15   Yaw Axis

                 Requirement: 1. Replace the autopilot servo actuator with an actuator that incorporates Mod 3, in accordance with procedures in the applicable maintenance manual.

                 2. An actuator, listed in the Applicability Statement, that has not had Mod 3 incorporated may not be installed on any aeroplane.

               Note: FAA AD 98-08-20 Amdt 39-10469 refers.

    Compliance: 1. Within the next 100 hours time in service after the effective date of this directive.

               2. As of the effective date of this directive.
 COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 107 CIVIL AVIATION SAFETY AUTHORITY
 SCHEDULE OF AIRWORTHINESS DIRECTIVES

           This airworthiness directive becomes effective on 18 June 1998.

           Background:  This directive requires the replacement of the autopilot servo actuator with a modified servo actuator. This is a result of the FAA receiving two reports of the affected actuators containing loose roll pins within the servo housing. Loose pins could fall out and become lodged in the output shaft, preventing this mechanism from disengaging.

           The actions mandated by this directive are intended to prevent such an occurrence, which could result in an increased effort by the pilot to control the aircraft and possible loss of control of the affected flight control axis.