{"id":"F2006B04147","name":"AD/BEECH 65/51 Amdt 2 - Powerplant Fire Detection and Extinguishing Systems","slug":"ad-beech-65-51-amdt-2-powerplant-fire-detection-and-extinguishing-systems","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":43876,"registerId":"commonwealth-F2006B04147-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/BEECH 65/51 Amdt 2 - Powerplant Fire Detection and Extinguishing Systems","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)  \nBeechcraft 65 and 70 (Queen Air) Series Aeroplanes\n\nAD/BEECH 65/51\n\nAmdt 2\n\n  \n\nPowerplant Fire Detection and Extinguishing Systems\n\n  \n8/89\n\nApplicability: All models 65 and 70 not modified in accordance with Excalibur STC No. SA444SW.\n\nRequirement: Install Powerplant fire detection and fire extinguishing systems which will protect the engine and accessory area in a manner acceptable to the Authority.\n\nNote 1: The existing Hawker de Havilland system to Drawing No. 05-D-567 will require further rework to meet the requirements of this amendment.\n\nNote 2: East-West Airlines Engineering Order D26-20-2087 and HTL Industries kit No. 30180022, in association with John Cameron kit JC-143 installed to EO 142, conform with the extinguishing requirement of this AD.\n\nCompliance: Before further flight after 31 December 1986.\n\nBackground: This Amendment is raised to include the model 70 which was inadvertently omitted at the time of original issue of this AD, and to exclude models 65 and 70 that have been modified by installing Lycoming IO-720-A1A or A1B engines.","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":true,"description":"This Amendment 2 explicitly narrows the original scope by adding exclusions. The original AD apparently applied more broadly; this amendment excludes aircraft with Lycoming IO-720-A1A/A1B engines and those modified under Excalibur STC No. SA444SW. It also expands scope slightly by adding Model 70 aircraft which were 'inadvertently omitted' from the original issue. The net effect is a refined, more targeted scope rather than scope creep."},"complexity_factors":["Single, specific regulatory instrument (Airworthiness Directive) with narrow applicability","Only 4 defined exclusions/modifications referenced (Excalibur STC, two Lycoming engine models)","One primary compliance requirement with two pre-approved alternative compliance paths (Note 2)","No nested conditional logic or cross-references to other legislation beyond the parent Civil Aviation Regulations 1998","Straightforward applicability statement using 'all... not modified' construction","Minimal procedural requirements — single compliance deadline with no phased implementation"],"plain_english_summary":"Owners/operators of Beechcraft Model 65 and 70 Queen Air aircraft must install CASA‑approved engine‑compartment fire detection and extinguishing systems, unless the aeroplane is modified under Excalibur STC No. SA444SW or re‑engined with Lycoming IO‑720‑A1A/A1B. \n\nThis AD closes a safety gap by mandating warning and firefighting capability for engine fires; the amendment adds Model 70 and clarifies exclusions for certain re‑engined aircraft."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"This amendment broadened applicability to explicitly include model 70 (previously omitted) and carved out aircraft of models 65 and 70 modified by installation of Lycoming IO‑720‑A1A or A1B engines. It also identifies specific compliant kits and notes required rework to an existing Hawker de Havilland system."},"complexity_factors":["Technical retrofit requirement limited to specific aircraft models (Beechcraft 65 and 70) and specific engine modifications.","Regulatory discretion: systems must be “acceptable to the Authority,” leaving approval judgment to the Civil Aviation Safety Authority.","Compliance burden on owners/operators to install or rework existing systems (Note 1 cites Hawker de Havilland Drawing No. 05‑D‑567 requiring further rework).","Prescriptive compliance paths: certain vendor kits and engineering orders are listed as conforming (Note 2), reducing but not eliminating approval uncertainty.","Clear deadline for compliance (before further flight after 31 December 1986) creates a binary operational constraint."],"plain_english_summary":"**Requires** all Beechcraft 65 and 70 (Queen Air) aeroplanes—except those modified under Excalibur STC No. SA444SW or fitted with Lycoming IO‑720‑A1A/A1B engines—to have powerplant fire detection and extinguishing systems acceptable to the Civil Aviation Safety Authority. Owners/operators must pay for installation or rework (the Hawker de Havilland system at Drawing No. 05‑D‑567 needs additional work); two supplier kits are noted as conforming. Compliance was required before further flight after 31 December 1986."}},"importantCases":[],"_links":{"self":"/api/acts/ad-beech-65-51-amdt-2-powerplant-fire-detection-and-extinguishing-systems","history":"/api/acts/ad-beech-65-51-amdt-2-powerplant-fire-detection-and-extinguishing-systems/history","analysis":"/api/acts/ad-beech-65-51-amdt-2-powerplant-fire-detection-and-extinguishing-systems/analysis","conflicts":"/api/acts/ad-beech-65-51-amdt-2-powerplant-fire-detection-and-extinguishing-systems/conflicts","importantCases":"/api/acts/ad-beech-65-51-amdt-2-powerplant-fire-detection-and-extinguishing-systems/important-cases","documents":"/api/acts/ad-beech-65-51-amdt-2-powerplant-fire-detection-and-extinguishing-systems/documents"}}