{"id":"F2006B06574","name":"AD/REC/3 - Sundstrand Cockpit Voice Recorders - Modification","slug":"ad-rec-3-sundstrand-cockpit-voice-recorders-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":48351,"registerId":"commonwealth-F2006B06574-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/REC/3 - Sundstrand Cockpit Voice Recorders - Modification","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/3 Sundstrand Cockpit Voice Recorders \\- Modification 2/93\n\nApplicability: Sundstrand Data Control Cockpit Voice Recorder Models AV-557, AV-557A, AV-557B and AV-557C.\n\nRequirement: Modify in accordance with the technical requirements of:\n\n    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\n\n    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.\n\nNote: FAA Airworthiness Directive 83-16-01 Amendment 39-4075 refers.\n\nCompliance: 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.\n\nNote: This Directive was originally issued as CAO 107 AD/RAD/42, prior compliance with that Directive is considered compliance with this Directive.\n\nBackground: 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.","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1925},"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This directive reissues existing technical requirements from CAO 107 AD/RAD/42 under the Civil Aviation Regulations 1998 Part 39 framework. The substantive scope — requiring modification of specific Sundstrand CVR connector types to prevent vibration-induced failures — remains unchanged, though the regulatory instrument classification has been updated."},"complexity_factors":["Technical aviation terminology requiring specialized knowledge (service bulletins, part number ranges, time-in-service calculations)","Multiple specific model variants and part number ranges requiring cross-referencing against aircraft maintenance logs","Cross-references to FAA (United States) airworthiness directives and superseded Australian Civil Aviation Orders","Conditional compliance based on prior modification status under previous regulatory instrument"],"plain_english_summary":"This Airworthiness Directive requires operators of aircraft equipped with certain Sundstrand AV-557 series cockpit voice recorders to replace vibration-prone split‑ring electrical sockets with full‑ring sockets per Sundstrand service instructions. It affects specific AV‑557/AV‑557A/AV‑557B/AV‑557C units and is intended to prevent intermittent or false‑positive recorder operation that could leave cockpit audio unrecorded after an accident. Previously compliant modifications under CAO 107 AD/RAD/42 are accepted; otherwise work was required within 2,000 flight hours (effective Feb 1993)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-rec-3-sundstrand-cockpit-voice-recorders-modification","history":"/api/acts/ad-rec-3-sundstrand-cockpit-voice-recorders-modification/history","analysis":"/api/acts/ad-rec-3-sundstrand-cockpit-voice-recorders-modification/analysis","conflicts":"/api/acts/ad-rec-3-sundstrand-cockpit-voice-recorders-modification/conflicts","importantCases":"/api/acts/ad-rec-3-sundstrand-cockpit-voice-recorders-modification/important-cases","documents":"/api/acts/ad-rec-3-sundstrand-cockpit-voice-recorders-modification/documents"}}