{"id":"F2008L03689","name":"AD/DH 104/11 - Engine Instrument Arrangement - Modification - CANCELLED","slug":"ad-dh-104-11-engine-instrument-arrangement-modification-cancelled","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":75395,"registerId":"commonwealth-F2008L03689-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"DH 104 (Dove) Series Aeroplanes","sectionType":"division","heading":"DH 104 (Dove) Series Aeroplanes","content":"### DH 104 (Dove) Series Aeroplanes\n\n| AD/DH 104/11 | Engine Instrument Arrangement - Modification | 11/2008 |\n| ------------ | -------------------------------------------- | ------- |\n\n| Requirement: | CANCELLED.                                                                                                                                                                                                                                       |\n| ------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |\n|              | This AD is cancelled on 23 October 2008.                                                                                                                                                                                                         |\n| Background:  | This unique AD was raised in 1971 requiring a modification to the engine instrument arrangement.Compliance was before 1 September 1971.As all affected aircraft would have been modified by now, this AD is considered to be no longer required. |\n\n![](image.001.png)\n\nCharles Lenarcic  \nDelegate of the Civil Aviation Safety Authority\n\n12 September 2008","sortOrder":0},{"sectionNumber":"AD/DH 104/11","sectionType":"part","heading":"AD/DH 104/11","content":"## AD/DH 104/11","sortOrder":1},{"sectionNumber":"Engine Instrument Arrangement - Modifica","sectionType":"part","heading":"Engine Instrument Arrangement - Modification","content":"## Engine Instrument Arrangement - 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":2515},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":true,"description":"This instrument completely cancels Airworthiness Directive AD/DH 104/11, shifting the scope from mandating engine instrument modifications on DH 104 Dove aircraft to removing that requirement entirely. The legislation's purpose has changed from imposing a safety obligation to abolishing it."},"complexity_factors":["Single operative provision (cancellation of previous directive)","No defined terms or interpretation section","No conditional logic, exceptions, or procedural steps","Minimal cross-referencing (only cites the AD being cancelled)"],"plain_english_summary":"**What this does:**\nThis document officially cancels a previous aircraft safety rule (an *Airworthiness Directive*) that required owners of DH 104 Dove aeroplanes to modify their engine instrument arrangements.\n\n**Who it affects:**\nOwners and operators of DH 104 (Dove) series aircraft, though the requirement being cancelled was already supposed to be completed by September 1971.\n\n**Why it matters:**\nThe original safety rule was issued in 1971 to fix a specific issue with engine instruments. Because the compliance deadline passed nearly 40 years ago and all affected aircraft should already have the modification, the Civil Aviation Safety Authority cancelled the directive on 23 October 2008 to tidy up the regulations. It removes an obsolete requirement from the books."}},"importantCases":[],"_links":{"self":"/api/acts/ad-dh-104-11-engine-instrument-arrangement-modification-cancelled","history":"/api/acts/ad-dh-104-11-engine-instrument-arrangement-modification-cancelled/history","analysis":"/api/acts/ad-dh-104-11-engine-instrument-arrangement-modification-cancelled/analysis","conflicts":"/api/acts/ad-dh-104-11-engine-instrument-arrangement-modification-cancelled/conflicts","importantCases":"/api/acts/ad-dh-104-11-engine-instrument-arrangement-modification-cancelled/important-cases","documents":"/api/acts/ad-dh-104-11-engine-instrument-arrangement-modification-cancelled/documents"}}