{"id":"F2008L03620","name":"AD/DH 82/4 - Q Type Harness - Modification - CANCELLED","slug":"ad-dh-82-4-q-type-harness-modification-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":75265,"registerId":"commonwealth-F2008L03620-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"DH 82 (Tiger Moth) Series Aeroplanes","sectionType":"division","heading":"DH 82 (Tiger Moth) Series Aeroplanes","content":"### DH 82 (Tiger Moth) Series Aeroplanes\n\n| AD/DH 82/4 | Q Type Harness - Modification | 11/2008 |\n| ---------- | ----------------------------- | ------- |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                                                                                        |\n| ------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n|              | This AD is cancelled on 23 October 2008.                                                                                                                                                                                                                                                          |\n| Background:  | This AD was raised prior to 1961 requiring modification of \"Q\" type safety harness locking mechanisms to prevent inadvertent in-flight operation of the release lever. Compliance was required forthwith.As all affected aircraft would have been modified by now, this AD is no longer required. |\n\n![](image.001.png)\n\nDavid Villiers  \nDelegate of the Civil Aviation Safety Authority\n\n11 September 2008","sortOrder":0},{"sectionNumber":"AD/DH 82/4","sectionType":"part","heading":"AD/DH 82/4","content":"## AD/DH 82/4","sortOrder":1},{"sectionNumber":"Q Type Harness - Modification","sectionType":"part","heading":"Q Type Harness - Modification","content":"## Q Type Harness - Modification","sortOrder":2},{"sectionNumber":"11/2008","sectionType":"part","heading":"11/2008","content":"## 11/2008","sortOrder":3}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1274},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"The document performs exactly as titled: it cancels Airworthiness Directive AD/DH 82/4. There is no expansion or alteration of scope beyond the stated purpose of revoking the previous requirement."},"complexity_factors":["Single operative provision (cancellation)","No defined terms or interpretation section","No cross-references to other legislative instruments","Straightforward declarative text with no conditional logic or exceptions"],"plain_english_summary":"This document officially cancels an old aircraft safety rule.\n\n**What it was:** An *Airworthiness Directive* (a mandatory safety instruction issued by the aviation regulator) originally required owners of DH 82 Tiger Moth aeroplanes to modify the \"Q type\" safety harness (seatbelt) locking mechanisms. The fix prevented pilots from accidentally bumping the release lever and unbuckling themselves during flight.\n\n**Why it's cancelled:** The Civil Aviation Safety Authority cancelled this directive in October 2008 because all affected aircraft would have completed the modification decades earlier. The rule is no longer needed since every plane has already been fixed."}},"importantCases":[],"_links":{"self":"/api/acts/ad-dh-82-4-q-type-harness-modification-cancelled","history":"/api/acts/ad-dh-82-4-q-type-harness-modification-cancelled/history","analysis":"/api/acts/ad-dh-82-4-q-type-harness-modification-cancelled/analysis","conflicts":"/api/acts/ad-dh-82-4-q-type-harness-modification-cancelled/conflicts","importantCases":"/api/acts/ad-dh-82-4-q-type-harness-modification-cancelled/important-cases","documents":"/api/acts/ad-dh-82-4-q-type-harness-modification-cancelled/documents"}}