Document ID: chunk:federal_register_of_legislation:F2006B02983:body:0
Version: federal_register_of_legislation:F2006B02983
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COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY
 SCHEDULE OF AIRWORTHINESS DIRECTIVES

 Boeing 737 Series Aeroplanes

 AD/B737/81
 Amdt 1

   Thrust Reverser Control System Inspection and Modification

 2/95

            Applicability: All Boeing 737-300, -400, and -500 series aircraft not incorporating the intent of Boeing Service Bulletin 737-78-1053.

             Requirement: 1. Carry out the test of the thrust reverser specified in the Boeing 737 Maintenance Manual, Section 78-31-00, titled "Auto-Restow Test" to verify proper operation of the thrust reverser Auto-Restow function.

             The B737 Maintenance Manual contains test procedures for the Auto-Restow function dependent on thrust reverser modification standard and engine accessory unit configuration. Select the appropriate procedure for the particular thrust reverser/EAU configuration undergoing test.

             If any discrepancy is found during this test either rectify the defect before further flight or operate the aircraft in accordance with an approved MEL.

            Note: Boeing Message M-7272-94-6132 dated 7 December 1994 refers.

             2. Incorporate thrust reverser sync-locks per Boeing Service Bulletin 737-78-1053 Revision 1, Revision 2, or Revision 3.

             Incorporation of Boeing Service Bulletin 737-78-1053 is terminating action for Requirement 1 of this Directive. Following modification per S.B. 737-78-1053, subsequent test of the Auto-Restow function is to be in accordance with the requirements specified in the Boeing 737 Maintenance Planning Document (MPD).

            Note: FAA AD 94-21-05 also refers.

             Compliance: 1. Unless previously accomplished, prior to 31 March 1995, and thereafter at intervals not to exceed 4000 flight hours since the last inspection.

            2. Not later than 31 December 1999.

            Background: This Directive has been issued as a result of an on-going design review of thrust reverser systems following an accident that was attributed to an uncommanded in- flight deployment of a thrust reverser.

            Amendment 1 has superseded the original issue of the Directive prior to the normal promulgation date due to the subsequent receipt of additional clarifying information which identifies a specific test of the thrust reverser control system in lieu of the previous requirement for a range of tests.