{"id":"F2006B06572","name":"AD/REC/1 - Maintenance of Cockpit Voice Recording Systems","slug":"ad-rec-1-maintenance-of-cockpit-voice-recording-systems","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":48345,"registerId":"commonwealth-F2006B06572-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/REC/1 - Maintenance of Cockpit Voice Recording Systems","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 107 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nCockpit Voice and Flight Data Recording Systems\n\nAD/REC/1 Maintenance of Cockpit Voice Recording Systems 9/88\n\nApplicability: All cockpit voice recording systems installed in compliance with Air Navigation Order Part 20, Section 20.18.\n\nRequirement: Check and functionally test the cockpit voice recorder installation as follows:\n\n    Confirm the proper recording on each voice channel of all the required Air Navigation Order 103.20 audio inputs for that channel.\n\n    2. Confirm the proper functioning of the bulk erase inhibit logic.\n\n    3. Maintain the underwater locating device, if fitted, in accordance with the manufacturer's requirements.\n\n    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.\n\nCompliance: After 1 July 1988:\n\n    At intervals not exceeding twelve (12) months or 2000 hours time in service, whichever occurs first; or\n\n    b. At the intervals approved in accordance with a System of Maintenance for the aircraft pursuant to Air Navigation Regulation 43(3).\n\nBackground: 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.","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1936},"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This appears to be the original directive maintaining its intended scope of prescribing maintenance intervals and procedures for cockpit voice recording systems. No evidence of scope creep beyond the original aviation safety purpose."},"complexity_factors":["References to external aviation regulations (Air Navigation Order Part 20 and Regulation 43(3))","Technical aviation terminology requiring specialized knowledge (e.g., \"bulk erase inhibit logic\", \"underwater locating device\")","Alternative compliance pathway requiring understanding of approved maintenance systems"],"plain_english_summary":"This directive requires aircraft operators with cockpit voice recorders to perform regular safety checks to ensure recorders and their critical features (audio capture, anti-erase protection, underwater locator beacons and crash sensors where fitted) will work in an accident.\n\nChecks must be done every 12 months or 2,000 flight hours (whichever comes first), unless an approved alternate maintenance schedule is used — closing gaps found in previous practices."}},"importantCases":[],"_links":{"self":"/api/acts/ad-rec-1-maintenance-of-cockpit-voice-recording-systems","history":"/api/acts/ad-rec-1-maintenance-of-cockpit-voice-recording-systems/history","analysis":"/api/acts/ad-rec-1-maintenance-of-cockpit-voice-recording-systems/analysis","conflicts":"/api/acts/ad-rec-1-maintenance-of-cockpit-voice-recording-systems/conflicts","importantCases":"/api/acts/ad-rec-1-maintenance-of-cockpit-voice-recording-systems/important-cases","documents":"/api/acts/ad-rec-1-maintenance-of-cockpit-voice-recording-systems/documents"}}