{"id":"F2006B08231","name":"AD/CESSNA 337/10 - Front Seat Restraint Installations - Modification","slug":"ad-cessna-337-10-front-seat-restraint-installations-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115480,"registerId":"commonwealth-F2006B08231-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 337/10 - Front Seat Restraint Installations - Modification","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-generator: Aspose.Words for .NET 22.10.0\n---\n\n?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n\nCOMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  Cessna 337 Series Aeroplanes\n\n \n\nAD/CESSNA 337/10  Front Seat Restraint Installations - Modification\n\n\n10/71\n\n \n\nApplicability: All models.\n\n \n\nRequirement: Modify each front seat restraint installation by fitting a safety harness in accordance with a scheme approved by the Secretary.\n\n \n\nCompliance: Before 1 September 1972.\n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1612},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"The directive maintains its original narrow scope—mandating specific safety equipment modifications for one aircraft type. There is no expansion into unrelated operational requirements or other aircraft models."},"complexity_factors":["Document length is less than 150 words","No definitions section or technical glossary","Single unconditional requirement with no exceptions or subsections","No cross-references to other legislation beyond the enabling regulations","Clear applicability statement ('All models') with no exclusions"],"plain_english_summary":"**What this rule does:** Requires owners and operators of Cessna 337 aircraft (twin-engine planes with front-and-back propellers) to upgrade the front seatbelts to include full safety harnesses (shoulder straps), not just lap belts.\n\n**Who it affects:** Anyone flying or maintaining Cessna 337 series aircraft in Australia.\n\n**What must be done:** Install approved safety harnesses in both front seats following an official design approved by the Secretary (the senior government aviation official). You cannot use any random harness—it must meet specific safety standards.\n\n**Why it matters:** This prevents pilots and front passengers from being thrown forward into the instrument panel or windshield during a crash or hard landing, significantly reducing the risk of serious injury or death.\n\n**Deadline:** The modification had to be completed before 1 September 1972."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-337-10-front-seat-restraint-installations-modification","history":"/api/acts/ad-cessna-337-10-front-seat-restraint-installations-modification/history","analysis":"/api/acts/ad-cessna-337-10-front-seat-restraint-installations-modification/analysis","conflicts":"/api/acts/ad-cessna-337-10-front-seat-restraint-installations-modification/conflicts","importantCases":"/api/acts/ad-cessna-337-10-front-seat-restraint-installations-modification/important-cases","documents":"/api/acts/ad-cessna-337-10-front-seat-restraint-installations-modification/documents"}}