AD/RAD/52 - Rockwell International, Collins Air Transport Division DME-700
1AD/RAD/52 - Rockwell International, Collins Air Transport Division DME-700
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COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 107 CIVIL AVIATION SAFETY AUTHORITY
SCHEDULE OF AIRWORTHINESS DIRECTIVES
Image unavailable in extracted text 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<br>numbers 1 through 4247 inclusive. |
| SB 25 | 11 November 1992 | 622-4540-020,, -021 and -022. SB 20<br>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 deaf’ modes of operation. Compliance with this Directive will effectively prevent units from displaying these characteristics.