{"id":"F2008L03623","name":"AD/DH 89/3 - Interplane Strut - Inspection - CANCELLED","slug":"ad-dh-89-3-interplane-strut-inspection-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":75271,"registerId":"commonwealth-F2008L03623-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"DH 89 (Dragon Rapide) Series Aeroplanes","sectionType":"division","heading":"DH 89 (Dragon Rapide) Series Aeroplanes","content":"### DH 89 (Dragon Rapide) Series Aeroplanes\n\n| AD/DH 89/3 | Interplane Strut - Inspection | 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 1968 requiring an inspection of the interplane struts. Compliance was required forthwith.As all affected aircraft would have been inspected 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 89/3","sectionType":"part","heading":"AD/DH 89/3","content":"## AD/DH 89/3","sortOrder":1},{"sectionNumber":"Interplane Strut - Inspection","sectionType":"part","heading":"Interplane Strut - Inspection","content":"## Interplane Strut - Inspection","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":1405},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This instrument performs a narrow administrative function — removing an obsolete safety requirement. It does not expand the scope of regulation or create new obligations; it simply recognises that the original directive has served its purpose and is no longer required."},"complexity_factors":["Single operative provision consisting only of a cancellation notice","No defined terms, interpretation provisions, or technical schedules","No conditional logic, exceptions, or compliance deadlines","Only cross-reference is to the specific AD being cancelled"],"plain_english_summary":"**What this does**\nThis document officially cancels an old aircraft safety rule. Specifically, it cancels Airworthiness Directive (AD) DH 89/3, which previously required owners of DH 89 Dragon Rapide aircraft to inspect the **interplane struts** (the structural supports connecting the upper and lower wings of this vintage biplane).\n\n**Why it matters**\nThe Civil Aviation Safety Authority (CASA) — Australia's aviation safety regulator — regularly reviews safety directives to remove requirements that are no longer necessary. This cancellation acknowledges that the inspection requirement (originally issued before 1968) has been satisfied by all affected aircraft over the preceding 40 years.\n\n**Who is affected**\nOwners and operators of DH 89 Dragon Rapide series aeroplanes, a twin-engine biplane design from the 1930s. In practice, this is largely administrative housekeeping, as compliance would have been achieved decades ago."}},"importantCases":[],"_links":{"self":"/api/acts/ad-dh-89-3-interplane-strut-inspection-cancelled","history":"/api/acts/ad-dh-89-3-interplane-strut-inspection-cancelled/history","analysis":"/api/acts/ad-dh-89-3-interplane-strut-inspection-cancelled/analysis","conflicts":"/api/acts/ad-dh-89-3-interplane-strut-inspection-cancelled/conflicts","importantCases":"/api/acts/ad-dh-89-3-interplane-strut-inspection-cancelled/important-cases","documents":"/api/acts/ad-dh-89-3-interplane-strut-inspection-cancelled/documents"}}