1AD/REC/1 - Maintenance of Cockpit Voice Recording Systems

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

SCHEDULE OF AIRWORTHINESS DIRECTIVES

Image unavailable in extracted text
Cockpit Voice and Flight Data Recording Systems

AD/REC/1 Maintenance of Cockpit Voice Recording Systems 9/88

Applicability: All cockpit voice recording systems installed in compliance with Air Navigation Order Part 20, Section 20.18.

Requirement: Check and functionally test the cockpit voice recorder installation as follows:

Confirm the proper recording on each voice channel of all the required Air Navigation Order 103.20 audio inputs for that channel.

2. Confirm the proper functioning of the bulk erase inhibit logic.

3. Maintain the underwater locating device, if fitted, in accordance with the manufacturer's requirements.

4. Check the operation of crash sensor switches, in accordance with the manufacturer's procedures, in installations incorporating these switches in the cockpit voice recorder power feed.

Compliance: After 1 July 1988:

At intervals not exceeding twelve (12) months or 2000 hours time in service, whichever occurs first; or

b. At the intervals approved in accordance with a System of Maintenance for the aircraft pursuant to Air Navigation Regulation 43(3).

Background: The maintenance procedures presently applied to some cockpit voice recording systems has been shown to be inadequate. Experience both in Australia and overseas has shown that the above maintenance periods will normally ensure the proper functioning of these systems.