{"id":"F2007L04792","name":"AD/DH 87/1 - Seat Restraint Installations - Modification - CANCELLED","slug":"ad-dh-87-1-seat-restraint-installations-modification-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":71328,"registerId":"commonwealth-F2007L04792-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"DH 87 (Hornet Moth) Series Aeroplanes","sectionType":"division","heading":"DH 87 (Hornet Moth) Series Aeroplanes","content":"### DH 87 (Hornet Moth) Series Aeroplanes\n\n| AD/DH 87/1 | Seat Restraint Installations - Modification | 1/2008 |\n| ---------- | ------------------------------------------- | ------ |\n\n| Requirement: | CANCELLED.                                                                                                                                                                   |\n| ------------ | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 17 January 2008.                                                                                                                                     |\n| Background:  | This AD was issued in 1982 to require the installation of upper torso restraint on aircraft certified prior to 1967. This AD has been replaced by AD/GENERAL/74 Amendment 1. |\n\n![](image.001.png)\n\nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n26 November 2007","sortOrder":0},{"sectionNumber":"AD/DH 87/1","sectionType":"part","heading":"AD/DH 87/1","content":"## AD/DH 87/1","sortOrder":1},{"sectionNumber":"Seat Restraint Installations - Modificat","sectionType":"part","heading":"Seat Restraint Installations - Modification","content":"## Seat Restraint Installations - Modification","sortOrder":2},{"sectionNumber":"1/2008","sectionType":"part","heading":"1/2008","content":"## 1/2008","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1136},"content_quality":"ok","complexity_score":1,"rejection_reason":"","scope_assessment":{"changed":false,"description":"This instrument performs a straightforward cancellation of an existing Airworthiness Directive without expanding, narrowing, or altering the original regulatory scope. The safety obligations previously imposed by this AD continue under a consolidated general directive (AD/GENERAL/74)."},"complexity_factors":["Single operative provision (cancellation only)","No defined terms or interpretation section","No conditional logic, exceptions, or procedural steps","No cross-references to other legislation beyond identifying the replacement AD"],"plain_english_summary":"**What this does:** This document officially cancels an old aviation safety rule (Airworthiness Directive AD/DH 87/1) effective 17 January 2008.\n\n**Background:** The original 1982 directive required owners of DH 87 Hornet Moth aircraft — a 1930s-era British biplane — to install upper torso restraints (shoulder harnesses) if their planes were certified before 1967. This was to improve pilot and passenger protection during crashes.\n\n**What replaces it:** The specific requirements for these aircraft are now covered by a broader general directive, **AD/GENERAL/74 Amendment 1**, which consolidates seat restraint rules across multiple aircraft types rather than having separate directives for each model.\n\n**Who it affects:** Owners, operators, and maintainers of DH 87 (Hornet Moth) Series aeroplanes registered in Australia."}},"importantCases":[],"_links":{"self":"/api/acts/ad-dh-87-1-seat-restraint-installations-modification-cancelled","history":"/api/acts/ad-dh-87-1-seat-restraint-installations-modification-cancelled/history","analysis":"/api/acts/ad-dh-87-1-seat-restraint-installations-modification-cancelled/analysis","conflicts":"/api/acts/ad-dh-87-1-seat-restraint-installations-modification-cancelled/conflicts","importantCases":"/api/acts/ad-dh-87-1-seat-restraint-installations-modification-cancelled/important-cases","documents":"/api/acts/ad-dh-87-1-seat-restraint-installations-modification-cancelled/documents"}}