{"id":"F2006B10112","name":"AD/G164/7 Amdt 2 - Power Plant Fire Protection - Modification","slug":"ad-g164-7-amdt-2-power-plant-fire-protection-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":55635,"registerId":"commonwealth-F2006B10112-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/G164/7 Amdt 2 - Power Plant Fire Protection - Modification","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)  \nSchweizer (Grumman) G-164 (Ag-Cat) Series Aeroplanes\n\nAD/G164/7\n\nAmdt 2\n\n  \nPower Plant Fire Protection \\- Modification 1/82\n\nApplicability: All models.\n\nRequirement: 1. Replace all fuel and oil system rigid pipe lines not manufactured from steel or a copper base alloy and fitted forward of the firewall, with rigid pipe lines manufactured from steel or copper base alloy.\n\n    2. Replace all free hose used to connect lengths of rigid pipe lines of the fuel and oil system forward of the firewall with approved fire resistant hose retained by steel hose clamps.\n\n    3. All flexible hose routed through the firewall shall be rendered fire resistant.\n\nNote: The modification requirements of paras. 1 and 2 need not apply to breather, vent or drain lines, the failure of which will not result in, or add to, a fire hazard.\n\nCompliance: Forthwith.\n\nBackground: The previous paragraph 3 of this Directive has been deleted due to the removal from ANO 101.22 of the requirement to replace free hose and clamp assemblies.","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1347},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This amendment removes a superseded requirement (previous paragraph 3 regarding ANO 101.22 compliance) but does not expand the directive's scope. The focus remains solely on fire protection modifications for fuel and oil systems in the specified aircraft."},"complexity_factors":["Extremely short document (4 operative paragraphs plus background)","Single, specific applicability (Schweizer G-164 series only)","Simple, numbered requirements with minimal conditional logic","Only one exception clause (breather/vent/drain lines exemption)","No complex legislative cross-referencing (only historical note regarding ANO 101.22)"],"plain_english_summary":"Owners/operators of Schweizer G‑164 Ag‑Cat aircraft must immediately upgrade fuel and oil lines in the engine compartment forward of the firewall to fire‑resistant materials and fittings: replace non‑steel/copper rigid pipes, fit approved fire‑resistant hoses with steel clamps, and ensure any firewall‑passing hoses are fire‑resistant. This prevents engine fires by reducing hose/pipeline failure in heat or flame."}},"importantCases":[],"_links":{"self":"/api/acts/ad-g164-7-amdt-2-power-plant-fire-protection-modification","history":"/api/acts/ad-g164-7-amdt-2-power-plant-fire-protection-modification/history","analysis":"/api/acts/ad-g164-7-amdt-2-power-plant-fire-protection-modification/analysis","conflicts":"/api/acts/ad-g164-7-amdt-2-power-plant-fire-protection-modification/conflicts","importantCases":"/api/acts/ad-g164-7-amdt-2-power-plant-fire-protection-modification/important-cases","documents":"/api/acts/ad-g164-7-amdt-2-power-plant-fire-protection-modification/documents"}}