{"id":"F2010L00580","name":"AD/CESSNA 750/3 Amdt 1 - Auxiliary Power Unit Fire Bottle Wiring","slug":"ad-cessna-750-3-amdt-1-auxiliary-power-unit-fire-bottle-wiring","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":123642,"registerId":"commonwealth-F2010L00580-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Cessna 750 (Citation X) Series Aeroplane","sectionType":"division","heading":"Cessna 750 (Citation X) Series Aeroplanes","content":"### Cessna 750 (Citation X) Series Aeroplanes\n\n| AD/CESSNA 750/3 Amdt 1 | Auxiliary Power Unit Fire Bottle Wiring | 4/2010 |\n| ---------------------- | --------------------------------------- | ------ |\n\n| Applicability: | Model 750 aeroplanes as identified in Cessna Service Bulletin SB750-26-05 dated24 November 2004.                                                                                                                                                                                                                                                          |\n| -------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | Action in accordance with the technical requirements of FAA AD 2007-11-17 Amendment 39-15074.                                                                                                                                                                                                                                                             |\n| Compliance:    | Unless previously accomplished in accordance with the original issue of this AD, as specified in the Requirement document.                                                                                                                                                                                                                                |\n|                | This Amendment becomes effective on 2 March 2010.                                                                                                                                                                                                                                                                                                         |\n| Background:    | The FAA has received reports of mis-wired fire extinguisher bottles. Such a condition could result in the circuit breaker disengaging (tripping) when an attempt is made to discharge the bottles. This amendment alters the presentation of the AD and refers to the latest FAA AD 2007-11-17 which supersedes previously referred to FAA AD 2006-04-10. |\n\n![](image.001.png)\n\nMike Higgins  \nDelegate of the Civil Aviation Safety Authority\n\n24 February 2010","sortOrder":0},{"sectionNumber":"AD/CESSNA 750/3 Amdt 1","sectionType":"part","heading":"AD/CESSNA 750/3 Amdt 1","content":"## AD/CESSNA 750/3 Amdt 1","sortOrder":1},{"sectionNumber":"Auxiliary Power Unit Fire Bottle Wiring","sectionType":"part","heading":"Auxiliary Power Unit Fire Bottle Wiring","content":"## Auxiliary Power Unit Fire Bottle Wiring","sortOrder":2},{"sectionNumber":"4/2010","sectionType":"part","heading":"4/2010","content":"## 4/2010","sortOrder":3}],"analysis":{"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":false,"description":"The amendment updates presentation and replaces the previously referenced FAA AD (2006-04-10) with FAA AD 2007-11-17 but does not alter which aeroplanes are covered or the required technical action. It restates the original requirement and confirms mandatory compliance (Background; Requirement; Applicability)."},"complexity_factors":["External normative reference to FAA AD 2007-11-17 rather than reproducing technical steps (Requirement)","Applicability tied to a specific Cessna service bulletin for aircraft identification (Applicability)","Safety‑critical electrical wiring work requires certified maintenance and specific parts, raising execution and compliance costs (Requirement / Background)","Mandatory compliance timing and effective date create administrative tracking and record-keeping obligations for operators (Compliance)","Amendment primarily repackages and updates references (Background), which may require operators to check multiple documents for the full technical specification"],"plain_english_summary":"Requires owners/operators of Cessna 750 (Citation X) aeroplanes identified in Cessna Service Bulletin SB750-26-05 (24 Nov 2004) to carry out the technical actions set out in FAA AD 2007-11-17 to correct mis‑wired Auxiliary Power Unit fire‑extinguisher bottle wiring. Effective 2 March 2010.\n\nThe AD responds to reports that mis‑wiring can trip the circuit breaker when a bottle is discharged, possibly preventing extinguisher operation. Aircraft operators pay for inspections/modifications and must arrange certified maintenance; compliance is mandatory unless already done."},"flash_summary_failed":{"failed":true,"reason":"A positive credit balance is required for all requests, including BYOK, so fallback providers remain available. Add credits at https://vercel.com/d?to=%2F%5Bteam%5D%2F%7E%2Fai%3Fmodal%3Dtop-up to continue.","source":"analysis-cron"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is an amendment to an existing Airworthiness Directive, but it does not expand the scope beyond the original safety issue. The amendment merely updates the referenced FAA document (from AD 2006-04-10 to AD 2007-11-17) and alters presentation. The core safety concern — mis-wired APU fire bottle wiring — remains unchanged from the original AD."},"complexity_factors":["Very short document (approximately 200 words of substantive content)","Only 1 defined term implicitly referenced (the Cessna Service Bulletin)","Single technical requirement that cross-references an external FAA document rather than setting out detailed instructions","Simple conditional logic: compliance required unless already done under original AD","No nested exceptions or complex procedural steps","Straightforward applicability test based on aircraft model and service bulletin identification"],"plain_english_summary":"This AD requires operators of certain Cessna 750 (Citation X) jets to inspect and correct incorrectly installed wiring on the APU fire-extinguisher bottles, because mis-wiring can trip a circuit breaker and prevent the extinguisher from discharging in a fire. It affects aircraft covered by Cessna’s November 2004 service bulletin; compliance with the original AD satisfies the requirement. The amendment updates which FAA document Australian operators should follow."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-750-3-amdt-1-auxiliary-power-unit-fire-bottle-wiring","history":"/api/acts/ad-cessna-750-3-amdt-1-auxiliary-power-unit-fire-bottle-wiring/history","analysis":"/api/acts/ad-cessna-750-3-amdt-1-auxiliary-power-unit-fire-bottle-wiring/analysis","conflicts":"/api/acts/ad-cessna-750-3-amdt-1-auxiliary-power-unit-fire-bottle-wiring/conflicts","importantCases":"/api/acts/ad-cessna-750-3-amdt-1-auxiliary-power-unit-fire-bottle-wiring/important-cases","documents":"/api/acts/ad-cessna-750-3-amdt-1-auxiliary-power-unit-fire-bottle-wiring/documents"}}