{"id":"F2006B05593","name":"AD/PA-28/33 - Front Seat Restraint Installation - Modification","slug":"ad-pa-28-33-front-seat-restraint-installation-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":135203,"registerId":"commonwealth-F2006B05593-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-28/33 - Front Seat Restraint Installation - 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)  Piper PA-28 Series Aeroplanes\n\n \n\nAD/PA-28/33 Front Seat Restraint Installation - Modification 10/71\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\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1572},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"The directive remains tightly focused on its original 1971 purpose: mandating front seat harnesses in Piper PA-28 aircraft. It has not expanded to cover rear seats, other aircraft types, or additional restraint systems."},"complexity_factors":["Single, unambiguous operative provision with no sub-sections","No definitions or interpretation clauses","Universal applicability ('All models') with no exemptions or conditional triggers","Fixed, non-variable compliance date","Total operative text is approximately 30 words"],"plain_english_summary":"**What it is:** This is a mandatory safety order (an Airworthiness Directive) issued under the Civil Aviation Regulations. It is legally binding on aircraft owners.\n\n**What it requires:** Owners of Piper PA-28 aeroplanes must fit approved safety harnesses (seatbelts) to the front seats. The installation must follow a specific plan signed off by the Secretary (the authorised government officer).\n\n**Who it affects:** Anyone who owns or operates any model of Piper PA-28 series aircraft.\n\n**The deadline:** The modification had to be completed before 1 September 1972.\n\n**Why it matters:** This ensures pilots and front-seat passengers are physically restrained during flight. Without compliant harnesses, occupants could be thrown against the controls or windshield during turbulence, hard landings, or accidents, causing serious injury or loss of aircraft control."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-28-33-front-seat-restraint-installation-modification","history":"/api/acts/ad-pa-28-33-front-seat-restraint-installation-modification/history","analysis":"/api/acts/ad-pa-28-33-front-seat-restraint-installation-modification/analysis","conflicts":"/api/acts/ad-pa-28-33-front-seat-restraint-installation-modification/conflicts","importantCases":"/api/acts/ad-pa-28-33-front-seat-restraint-installation-modification/important-cases","documents":"/api/acts/ad-pa-28-33-front-seat-restraint-installation-modification/documents"}}