{"id":"F2006B08914","name":"AD/DH 89/2 - Aileron Differential Pulley - Inspection","slug":"ad-dh-89-2-aileron-differential-pulley-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":52455,"registerId":"commonwealth-F2006B08914-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/DH 89/2 - Aileron Differential Pulley - Inspection","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)  DH 89 (Dragon Rapide) Series Aeroplanes\n\n \n\nAD/DH 89/2 Aileron Differential Pulley - Inspection NK\n\nApplicability: All models.\n\n \n\nRequirement: Inspect the aileron differential pulleys for correct location.\n\n \n\nPulleys must be located as follows: P/N 46942A port.\n\nP/N 46943A starboard. or ANO 105.1.14.10.6.1.\n\nCompliance: Forthwith.\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":1587},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This Airworthiness Directive remains tightly scoped to its original purpose: ensuring correct installation of aileron differential pulleys on DH 89 Dragon Rapide aircraft. It has not expanded beyond this specific safety inspection."},"complexity_factors":["Single, unambiguous inspection requirement with no exceptions","No conditional logic or nested provisions","Only three technical references (two part numbers and one standard)","Extremely brief operative text (under 50 words)","Clear applicability covering all models of the specified aircraft"],"plain_english_summary":"This mandatory safety order requires owners/operators of DH 89 Dragon Rapide aircraft to immediately inspect that the aileron differential pulleys are fitted in the correct positions—port with part 46942A and starboard with part 46943A (or comply with ANO 105.1.14.10.6.1). Incorrect pulley placement can impair aileron movement and compromise aircraft controllability, so prompt action is required."}},"importantCases":[],"_links":{"self":"/api/acts/ad-dh-89-2-aileron-differential-pulley-inspection","history":"/api/acts/ad-dh-89-2-aileron-differential-pulley-inspection/history","analysis":"/api/acts/ad-dh-89-2-aileron-differential-pulley-inspection/analysis","conflicts":"/api/acts/ad-dh-89-2-aileron-differential-pulley-inspection/conflicts","importantCases":"/api/acts/ad-dh-89-2-aileron-differential-pulley-inspection/important-cases","documents":"/api/acts/ad-dh-89-2-aileron-differential-pulley-inspection/documents"}}