{"id":"F2006B09076","name":"AD/DHC-3/27 - Front Seat Restraint Installation","slug":"ad-dhc-3-27-front-seat-restraint-installation","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":52859,"registerId":"commonwealth-F2006B09076-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/DHC-3/27 - Front Seat Restraint Installation","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)  DHC-3 (Otter) Series Aeroplanes\n\n \n\nAD/DHC-3/27 Front Seat Restraint Installation 9/72\n\nApplicability: All models.\n\n \n\nRequirement: Modify each front seat restraint installation by fitting at safety harness in accordance with a scheme approved by the Secretary.\n\n \n\nNote: Guidelines for installation schemes ar outlined in Airworthiness Advisory Circular No 2 dated March 1972.\n\n \n\nCompliance: Before 1 October 1973.\n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1736},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This appears to be the original 1972 airworthiness directive, maintaining its narrow, technical scope focused solely on front seat restraint upgrades for this specific aircraft type."},"complexity_factors":["Extremely short length with only one operational requirement","No defined terms or interpretation section","Simple unconditional applicability ('All models')","Single external reference to an advisory circular","No exceptions, provisos, or nested conditions"],"plain_english_summary":"This rule is a safety upgrade for **DHC-3 Otter aircraft** (a rugged Canadian-built utility plane popular in regional Australia). It mandates that owners must replace or upgrade the front seat seatbelts with a proper **safety harness** (a strapping system that better protects occupants during crashes or turbulence).\n\n**What needs to happen:**\n*   Install an approved safety harness in each front seat\n*   Follow a technical installation plan approved by the **Secretary** (the senior government official responsible for aviation safety at the time)\n*   Use **Airworthiness Advisory Circular No. 2 (March 1972)** as the technical guide for how to do the work\n\n**Who it affects:** Anyone operating a DHC-3 Otter, regardless of specific model variant.\n\n**Why it matters:** Standard lap belts weren't providing enough protection in accidents; harnesses reduce the risk of serious injury by keeping occupants properly restrained."}},"importantCases":[],"_links":{"self":"/api/acts/ad-dhc-3-27-front-seat-restraint-installation","history":"/api/acts/ad-dhc-3-27-front-seat-restraint-installation/history","analysis":"/api/acts/ad-dhc-3-27-front-seat-restraint-installation/analysis","conflicts":"/api/acts/ad-dhc-3-27-front-seat-restraint-installation/conflicts","importantCases":"/api/acts/ad-dhc-3-27-front-seat-restraint-installation/important-cases","documents":"/api/acts/ad-dhc-3-27-front-seat-restraint-installation/documents"}}