{"id":"F2006B09205","name":"AD/DHC-8/5 Amdt 1 - Fire Bottle Explosive Squib Wiring","slug":"ad-dhc-8-5-amdt-1-fire-bottle-explosive-squib-wiring","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":53033,"registerId":"commonwealth-F2006B09205-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/DHC-8/5 Amdt 1 - Fire Bottle Explosive Squib Wiring","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)  \nBombardier (Boeing Canada/De Havilland) DHC-8 Series Aeroplanes\n\nAD/DHC-8/5\n\nAmdt 1\n\n  \n\nFire Bottle Explosive Squib Wiring 6/89 TX\n\nApplicability: All DHC-8 aircraft series 100 and 300.\n\nRequirement: 1. Action in accordance with Boeing Canada de Havilland Division Alert Service Bulletin A8-26-8.\n\n2. Action in accordance with Boeing Canada de Havilland Division Service Bulletin 8-26-9.\n\nCompliance: Requirement 1: Prior to 14 April 1989.\n\nRequirement 2: Incorporation in conjunction with Requirement 1 is recommended, but not later than 7 May 1989.\n\nBackground: As a result of the special inspection outlined in Boeing Canada de Havilland Division ASB A8-26-7 (as required by the original issue of this AD), some fire bottle squibs have been found mis-wired. This error can cause a fire bottle to be discharged into the wrong engine. Amendment 1 to this AD is issued to update the Requirement documents and provide a method of preventing cross connection of fire bottle squibs during maintenance.","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":3323},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This amendment maintains the original directive's scope of addressing mis-wired fire bottle squibs. It updates the referenced technical documents to newer service bulletins and adds preventive maintenance procedures, but does not expand applicability beyond DHC-8 Series 100 and 300 aircraft or broaden the fundamental safety issue being addressed."},"complexity_factors":["Extremely narrow scope affecting only specific aircraft series (DHC-8 100/300)","Heavy reliance on external technical documents (Service Bulletins A8-26-8 and 8-26-9) not reproduced in the directive text","Simple two-tier compliance structure with only two requirements and clear deadlines","Minimal defined terms; technical aviation terminology (squibs, fire bottles) assumes engineering knowledge but legal construction is straightforward"],"plain_english_summary":"This AD requires owners of Bombardier DHC‑8 Series 100 and 300 aircraft to correct incorrect wiring in engine fire‑suppression systems per updated manufacturer procedures. It updates technical references and adds safeguards for maintenance to prevent future miswiring. \n\nIt affects all operators of these models and matters because proper wiring ensures extinguishing agents go to the burning engine, not the healthy one."}},"importantCases":[],"_links":{"self":"/api/acts/ad-dhc-8-5-amdt-1-fire-bottle-explosive-squib-wiring","history":"/api/acts/ad-dhc-8-5-amdt-1-fire-bottle-explosive-squib-wiring/history","analysis":"/api/acts/ad-dhc-8-5-amdt-1-fire-bottle-explosive-squib-wiring/analysis","conflicts":"/api/acts/ad-dhc-8-5-amdt-1-fire-bottle-explosive-squib-wiring/conflicts","importantCases":"/api/acts/ad-dhc-8-5-amdt-1-fire-bottle-explosive-squib-wiring/important-cases","documents":"/api/acts/ad-dhc-8-5-amdt-1-fire-bottle-explosive-squib-wiring/documents"}}