{"id":"F2006B10787","name":"AD/IAI-W/12 - Cockpit Voice Recorder Area Microphone Location","slug":"ad-iai-w-12-cockpit-voice-recorder-area-microphone-location","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":56250,"registerId":"commonwealth-F2006B10787-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/IAI-W/12 - Cockpit Voice Recorder Area Microphone Location","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nIsrael Aircraft Industries 1123 and 1124 (Westwind) Series Aeroplanes\n\nAD/IAI-W/12 Cockpit Voice Recorder Area Microphone Location 6/88\n\nApplicability: All models where the unit containing the cockpit voice recorder area microphone is installed in the centre console such that the microphone is located towards the edge of the console.\n\nRequirement: Reposition the unit containing the cockpit voice recorder area microphone so that the microphone is located towards the centre of the centre console.\n\nNote: This may be achieved by rotating the unit through 180 degrees.\n\nCompliance: Before the issue of a new Maintenance Release after 30 June 1988 or by 14 July 1988, whichever occurs first.\n\nBackground: In many installations, the area microphone is located very close to the pilot’s seat. This allows the area microphone to be blanketed by seat covers or loose items of clothing, severely reducing the area microphone’s capability to record cockpit sounds.","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive's scope remains limited to installations where the CVR area microphone is located toward the edge of the centre console; it does not broaden coverage to other systems or aircraft beyond that applicability statement (Applicability)."},"complexity_factors":["Limited applicability: only applies where the CVR area microphone is installed toward the edge of the centre console (Applicability).","Simple, specific corrective action: reposition or rotate the CVR microphone unit (Requirement).","Clear, short compliance window with an either/or trigger tied to maintenance releases and fixed dates (Compliance).","Low technical ambiguity about what must be done, but no measurement tolerances or formal verification criteria are provided in the text (Requirement/Background).","Operational impacts confined to routine maintenance scheduling and labour; no new equipment or certification tasks mandated (Compliance)."],"plain_english_summary":"This airworthiness directive requires operators of Israel Aircraft Industries Westwind 1123/1124 aeroplanes with the cockpit voice recorder (CVR) area microphone mounted toward the edge of the centre console to reposition the unit so the microphone faces the centre (rotation by 180° is acceptable). (Applicability; Requirement)\n\nOperators and maintenance organisations must complete the repositioning before issuing a new Maintenance Release after 30 June 1988 or by 14 July 1988, whichever occurs first; the measure imposes maintenance labour and scheduling costs and aims to stop the microphone being blanketed by seats or loose clothing. (Compliance; Background)"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive addressing a specific technical issue with a specific aircraft model. It has not expanded beyond its original purpose of ensuring proper cockpit voice recorder microphone placement."},"complexity_factors":["Single, specific aircraft type (Israel Aircraft Industries 1123/1124 Westwind series)","Simple mechanical remedy (rotate unit 180 degrees)","Clear applicability test (microphone at edge of centre console)","Single compliance deadline with straightforward calculation","No defined terms section, no cross-references to other legislation, no conditional exceptions","Total length: approximately 150 words"],"plain_english_summary":"This is an **Airworthiness Directive** — a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA) that requires specific repairs or modifications to aircraft.\n\n**What it does:**\nThis directive orders owners and operators of **Israel Aircraft Industries Westwind 1123 and 1124 series aircraft** to move the cockpit voice recorder's area microphone from the edge of the centre console to the centre of the console.\n\n**Why it matters:**\nThe cockpit voice recorder captures audio from the flight deck, which is crucial for accident investigations. When the microphone sits too close to the pilot's seat, it can get covered by seat covers or clothing, muffling or blocking important sounds. This directive fixes that safety risk.\n\n**Who must comply:**\nAnyone operating these specific Westwind aircraft models where the microphone unit is currently installed at the edge of the centre console.\n\n**How to fix it:**\nOperators must reposition the microphone unit — the directive notes this can be done simply by rotating the unit 180 degrees.\n\n**Deadline:**\nThe work must be completed before the aircraft gets a new Maintenance Release after 30 June 1988, or by 14 July 1988 — whichever comes first."}},"importantCases":[],"_links":{"self":"/api/acts/ad-iai-w-12-cockpit-voice-recorder-area-microphone-location","history":"/api/acts/ad-iai-w-12-cockpit-voice-recorder-area-microphone-location/history","analysis":"/api/acts/ad-iai-w-12-cockpit-voice-recorder-area-microphone-location/analysis","conflicts":"/api/acts/ad-iai-w-12-cockpit-voice-recorder-area-microphone-location/conflicts","importantCases":"/api/acts/ad-iai-w-12-cockpit-voice-recorder-area-microphone-location/important-cases","documents":"/api/acts/ad-iai-w-12-cockpit-voice-recorder-area-microphone-location/documents"}}