{"id":"F2006B06098","name":"AD/PC-12/35 - Overhead Panel Switch Caps","slug":"ad-pc-12-35-overhead-panel-switch-caps","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":46838,"registerId":"commonwealth-F2006B06098-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AIRWORTHINESS DIRECTIVE","sectionType":"part","heading":"AIRWORTHINESS DIRECTIVE","content":"# AIRWORTHINESS DIRECTIVE\n\n![](image.001.png)\n\n![](image.001.png)  \nFor the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CAR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.\n\nPilatus PC-12 Series Aeroplanes","sortOrder":0},{"sectionNumber":"AD/PC-12/35 Overhead Panel Switch Caps 2","sectionType":"part","heading":"AD/PC-12/35 Overhead Panel Switch Caps 2/2003","content":"# AD/PC-12/35 Overhead Panel Switch Caps 2/2003\n\nApplicability: Model PC-12 and PC-12/45 aeroplanes with Manufacturers Serial Number (MSN) 321, together with MSN 401 to MSN 457 (inclusive) and MSN 463, with overhead panel Part Number (P/N) 972.81.32.102 installed.\n\nNote 1: This Directive is not applicable to aeroplanes with overhead panel P/N 972.81.32.102 at Mod A standard.\n\nRequirement: Modify the overhead panel by replacing overhead panel switch caps in accordance with Pilatus PC-12 Service Bulletin 31-003 dated 27 September 2002.\n\nNote 2: FOCA Switzerland AD HB 2002-659 refers.\n\nCompliance: At the next 100 hour inspection or annual inspection, whichever occurs first, after the effective date of this Directive.\n\nThis Airworthiness Directive becomes effective on 20 February 2003.\n\nBackground: Pilatus has reported that it is possible that push switches on the overhead panel may not operate due to failure of the plastic switch cap spigot. This Directive requires the replacement of the switch caps with items, which have stronger improved spigots.\n\n![Signature of James Coyne, Delegate of the Civil Aviation Safety Authority.](image.002.png)  \n\nJames Coyne\n\nDelegate of the Civil Aviation Safety Authority 10 December 2002\n\n![](image.001.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 29 January 2003.","sortOrder":1}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a targeted safety directive addressing a specific mechanical defect in specific aircraft. It has not expanded beyond its original purpose of mandating switch cap replacement."},"complexity_factors":["Very short document (approximately 250 words)","Only 3 defined applicability criteria (specific serial number ranges, specific part number, specific modification standard exemption)","Single straightforward requirement with clear reference to external technical document (Service Bulletin 31-003)","Simple compliance trigger (next scheduled inspection)","No nested exceptions, conditional logic, or cross-references to other legislation","Single background issue with single mandated action"],"plain_english_summary":"This AD requires owners/operators of certain Pilatus PC‑12/45 aircraft (S/N 321, 401–457, 463) equipped with overhead panel P/N 972.81.32.102 to replace weak plastic switch caps with strengthened versions per Pilatus SB 31‑003.  \n\nIt prevents cockpit switches failing in flight; comply by the next 100‑hour or annual inspection after 20 Feb 2003 (aircraft already at Mod A standard are exempt)."},"flash_summary_failed":{"failed":true,"reason":"Unauthenticated. Configure AI_GATEWAY_API_KEY or use a provider module. Learn more: https://ai-sdk.dev/unauthenticated-ai-gateway","source":"analysis-cron"},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"Scope tracks the manufacturer’s reported unsafe condition: it requires replacement of switch caps only on the listed aircraft and part number, excludes Mod A standard aircraft, and sets a single compliance window. The AD does not expand obligations beyond the specific corrective action and affected serial numbers."},"complexity_factors":["Narrow applicability limited to specific MSNs and a single overhead‑panel Part Number (requires record checks).","Single, discrete corrective action: replace switch caps per Pilatus Service Bulletin 31‑003.","Clear compliance timing: at next 100‑hour inspection or annual inspection, whichever occurs first.","Exclusion for Mod A standard aircraft (requires verification of modification status).","Instructions delegated to the manufacturer’s service bulletin rather than set out in the AD text.","Cross‑reference to FOCA Switzerland AD HB 2002‑659 (international coordination noted).","No ongoing monitoring, inspections, or reporting obligations included."],"plain_english_summary":"This Airworthiness Directive requires owners/operators of specified Pilatus PC‑12 and PC‑12/45 aeroplanes (listed MSNs with overhead panel P/N 972.81.32.102) to replace overhead‑panel switch caps in accordance with Pilatus Service Bulletin 31‑003; aeroplanes at Mod A standard are excluded. Replacement must be done at the next 100‑hour or annual inspection after the directive’s effective date. Operators bear the cost of parts and labour; the CASA delegate issued the directive under CAR 1998 to address possible failure of the plastic switch‑cap spigot."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pc-12-35-overhead-panel-switch-caps","history":"/api/acts/ad-pc-12-35-overhead-panel-switch-caps/history","analysis":"/api/acts/ad-pc-12-35-overhead-panel-switch-caps/analysis","conflicts":"/api/acts/ad-pc-12-35-overhead-panel-switch-caps/conflicts","importantCases":"/api/acts/ad-pc-12-35-overhead-panel-switch-caps/important-cases","documents":"/api/acts/ad-pc-12-35-overhead-panel-switch-caps/documents"}}