{"id":"F2006B08889","name":"AD/DH 60/2 - Seat Restraint Installations - Modification","slug":"ad-dh-60-2-seat-restraint-installations-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":52378,"registerId":"commonwealth-F2006B08889-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/DH 60/2 - Seat Restraint Installations -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)  De Havilland DH 60 (Moth) Series Aeroplanes\n\n \n\nAD/DH 60/2 Seat Restraint Installations - Modification 11/72\n\nApplicability: All models.\n\n \n\nRequirement: Modify each seat restraint installation by fitting a safety harness in accordance with a scheme approved by the Secretary.\n\n \n\nNote: Guidelines for installation schemes are outlined in Airworthiness Advisory Circular No 62 dated March 1972.\n\n \n\nCompliance: Before 1 January 1974 unless already accomplished.\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":1646},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This directive remains tightly scoped to its original purpose: mandating safety harness installations for a specific vintage aircraft type (De Havilland DH 60 series). There is no evidence of scope expansion beyond this targeted airworthiness modification."},"complexity_factors":["Single, straightforward mechanical requirement","No defined terms or interpretation sections","No conditional logic, exceptions, or nested clauses","Only one external reference (to an advisory circular)","Document length under 150 words"],"plain_english_summary":"**What this does:** Requires vintage biplane owners to install proper seatbelts.\n\n**Who it affects:** Owners and operators of De Havilland DH 60 \"Moth\" series aircraft — classic wooden biplanes built between the 1920s and 1930s.\n\n**The requirement:** Each seat in these aircraft must be fitted with a safety harness (seatbelt) installed according to a plan approved by the Secretary. The rules for acceptable installation methods were set out in Airworthiness Advisory Circular No. 62 from March 1972.\n\n**Why it matters:** Many of these historic aircraft were originally built before modern passenger restraint systems were standard. This directive mandated a critical safety upgrade to protect occupants during turbulence or accidents.\n\n**Key deadline:** The modifications had to be completed before 1 January 1974 (unless already done)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-dh-60-2-seat-restraint-installations-modification","history":"/api/acts/ad-dh-60-2-seat-restraint-installations-modification/history","analysis":"/api/acts/ad-dh-60-2-seat-restraint-installations-modification/analysis","conflicts":"/api/acts/ad-dh-60-2-seat-restraint-installations-modification/conflicts","importantCases":"/api/acts/ad-dh-60-2-seat-restraint-installations-modification/important-cases","documents":"/api/acts/ad-dh-60-2-seat-restraint-installations-modification/documents"}}