Document ID: chunk:federal_register_of_legislation:F2006B06509:body:0
Version: federal_register_of_legislation:F2006B06509
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COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 107 CIVIL AVIATION SAFETY AUTHORITY
    SCHEDULE OF AIRWORTHINESS DIRECTIVES

    Radio Communication and Navigation Equipment

                          AD/RAD/52 Rockwell International, Collins Air Transport Division DME-700

               Applicability: Rockwell International, Collins Air Transport Division, DME- 700 Distance Measuring Equipment, all serial numbers, with the following part numbers:

4/94

               622-4540-020, 622-4540-021, 622-4540-022, 622-4540-120, and 622-4540-121.

               Note: These equipments are known to be installed on, but not limited to the following aircraft series:

               Airbus Industrie A300, A310, A300-600, A320 and A340 Boeing  737, 747-400, and 767
               Fokker F-100

               McDonnell Douglas MD-11 and MD-80

               Requirement: Unless previously accomplished, incorporate Collins Air Transport Division Service Bulletins in accordance with the following Table:

Collins SB         Dated             Applicable DME-700 Part Numbers
SB 20 Revision 1   30 August 1991     622-4540-020 and -120, with serial
                                     numbers 1 through 4247 inclusive.
SB 25              11 November 1992  622-4540-020,, -021 and -022. SB 20
                                     Revision 1 must be installed on applicable part numbers, prior to, or in conjunction with SB 25. SB 24 is incorporated by SB 25.
SB 26              21 October 1992   622-4540-120 and -121. SB 20 Revision 1 must be incorporated in applicable part numbers, prior to, or in conjunction with SB 25. SB 26 eliminates the requirement for SB 21.

               Note: FAA AD 94-02-02 Amdt 39-8799 refers.

    Compliance: Prior to 31 March 1995.

               Background: Several operators have reported random instances of erroneous DME indications, the affected units failing to process and update distance outputs. Additionally, some units have been reported as establishing a continuous restart mode upon application of power. These conditions are known colloquially as `sleeping' or `deaf' modes of operation. Compliance with this Directive will effectively prevent units from displaying these characteristics.
 COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 107 CIVIL AVIATION SAFETY AUTHORITY
 SCHEDULE OF AIRWORTHINESS DIRECTIVES