{"id":"F2006B08240","name":"AD/CESSNA 337/20 - Pre-Certification Requirements - Modification","slug":"ad-cessna-337-20-pre-certification-requirements-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115503,"registerId":"commonwealth-F2006B08240-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 337/20 - Pre-Certification Requirements - 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)  \nCessna 337 Series Aeroplanes\n\nAD/CESSNA 337/20 Pre-Certification Requirements \\- Modification 12/74\n\nApplicability: All model T337G.\n\nRequirement: Modify the aircraft in accordance with the requirements of ANO 101.22 in respect of the following:\n\n    Install a placard in the cabin specifying the periods during which smoking is prohibited.\n\n    2. Install a placard adjacent to the aircraft external electrical power connection indicating system voltage.\n\n    3. Install and identify:\n\n    (a) fuelling equipment bonding points at each fuel filling point,\n\n    (b) external earthing points for the attachment of ground connection on each main undercarriage assembly or on the nose gear.\n\n    4. Replace the flexible hose assemblies listed below with assemblies meeting the fire resistance standards of FAA TSO C53B Type C or D or render them fire resistant to that standard by fitting an approved fire sleeve:\n\nFuel Pump to Fuel Control Unit P/No. 111417-4-0160 Fuel Control Unit to Fuel Manifold P/No. 111417-4-0160\n\nMain Fuel Line to Engine Driven Pump \\- Front Engine P/No. S1167-6-0450 \\- Rear Engine P/No. S1167-6-0610\n\nPropeller Unfeathering Accumulator Line \\- Front Engine P/No. S1167-6-0245\n\n\\- Rear Engine P/No. S1167-6-0100 Compliance: Before issue of a Certificate of Airworthiness.","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2239},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This directive maintains its original narrow scope: pre-certification safety modifications for the Cessna T337G aircraft model. The requirements align with the stated purpose of ensuring basic safety standards (fire resistance, electrical safety, and fuelling safety) are met before the aircraft enters service."},"complexity_factors":["Short, discrete list of only 4 specific technical requirements","Single aircraft model applicability (T337G only)","References to external technical standards (FAA TSO C53B) without conditional interpretation layers","No nested exceptions, defined terms, or cross-references to other legislative provisions","Simple compliance trigger (before Certificate of Airworthiness issuance)"],"plain_english_summary":"This Airworthiness Directive applies to Cessna T337G aircraft and requires owners to complete safety upgrades before a Certificate of Airworthiness is issued. Required work includes installing cabin and external warning placards, fitting bonding/earthing points at fuel and landing-gear locations, and replacing or sleeving specified fuel and propeller-control hoses with FAA-standard fire-resistant parts.\n\nThese measures reduce fire and electrical-spark risks and ensure the airplane meets Australia’s airworthiness safety standards."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-337-20-pre-certification-requirements-modification","history":"/api/acts/ad-cessna-337-20-pre-certification-requirements-modification/history","analysis":"/api/acts/ad-cessna-337-20-pre-certification-requirements-modification/analysis","conflicts":"/api/acts/ad-cessna-337-20-pre-certification-requirements-modification/conflicts","importantCases":"/api/acts/ad-cessna-337-20-pre-certification-requirements-modification/important-cases","documents":"/api/acts/ad-cessna-337-20-pre-certification-requirements-modification/documents"}}