1AD/REC/3 - Sundstrand Cockpit Voice Recorders - Modification

COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 107 CIVIL AVIATION SAFETY AUTHORITY

SCHEDULE OF AIRWORTHINESS DIRECTIVES

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Cockpit Voice and Flight Data Recording Systems

AD/REC/3 Sundstrand Cockpit Voice Recorders - Modification 2/93

Applicability: Sundstrand Data Control Cockpit Voice Recorder Models AV-557, AV-557A, AV-557B and AV-557C.

Requirement: Modify in accordance with the technical requirements of:

Sundstrand Data Control Service Bulletin No 012-0296-109 Revision 1 dated 18 June 1982, or later revision, for part numbers 980-6005-054 to \-058 inclusive and 980-6005-074 to -078 inclusive, and

2. Sundstrand Data Control Service Bulletin No 012-0129-113 Revision 1 dated 20 June 1982, or later revision, for part numbers 980-6005-010 to \-013 inclusive, 980- 6005-020 to -023 inclusive, 980-6005-050 to -053 inclusive and 680-6005-060 to - 063 inclusive.

Note: FAA Airworthiness Directive 83-16-01 Amendment 39-4075 refers.

Compliance: The compliance of the original Directive was within 2000 hours time in service after 12 September 1983. This Directive becomes effective on 4 February 1993.

Note: This Directive was originally issued as CAO 107 AD/RAD/42, prior compliance with that Directive is considered compliance with this Directive.

Background: Under conditions of vibration, connectors with split-ring sockets may cause CVRs to operate intermittently, give erroneous self test indications and contribute to sensor or tape-off-reel problems. Replacements are full ring sockets.