{"id":"F2006B09100","name":"AD/DHC-6/13 - Flap Control Push Rod Assembly - Modification","slug":"ad-dhc-6-13-flap-control-push-rod-assembly-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115653,"registerId":"commonwealth-F2006B09100-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/DHC-6/13 - Flap Control Push Rod Assembly - Modification","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)  DHC-6 (Twin Otter) Series Aeroplanes\n\n \n\nAD/DHC-6/13 Flap Control Push Rod Assembly - Modification 8/68\n\nApplicability: All models with S/Nos. 1 to 105 not modified in Mod. Bulletin No. 6/1085. Document:               De Havilland Canada Mod. Bulletin No. 6/1085.\n\nCompliance: Before 1 January 1969.\n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1713},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This appears to be the original airworthiness directive as issued, targeting a specific safety modification for early production Twin Otter aircraft. The scope remains limited to the specific serial number range and modification requirement originally intended."},"complexity_factors":["Very short document with single compliance requirement","Limited applicability to specific serial number range (S/Nos. 1-105)","No nested conditions or exceptions - simple binary applicability check (modified vs unmodified)","Single external reference to technical standard (Modification Bulletin No. 6/1085)","Clear, fixed compliance date with no alternative methods of compliance stated"],"plain_english_summary":"Owners/operators of De Havilland DHC‑6 Twin Otter aircraft (serial numbers 1–105) must install a safety modification to the flap control push‑rod assembly per De Havilland Canada Modification Bulletin No. 6/1085. The modification, required before 1 January 1969, addresses a flap control failure risk that could compromise safe takeoffs and landings."}},"importantCases":[],"_links":{"self":"/api/acts/ad-dhc-6-13-flap-control-push-rod-assembly-modification","history":"/api/acts/ad-dhc-6-13-flap-control-push-rod-assembly-modification/history","analysis":"/api/acts/ad-dhc-6-13-flap-control-push-rod-assembly-modification/analysis","conflicts":"/api/acts/ad-dhc-6-13-flap-control-push-rod-assembly-modification/conflicts","importantCases":"/api/acts/ad-dhc-6-13-flap-control-push-rod-assembly-modification/important-cases","documents":"/api/acts/ad-dhc-6-13-flap-control-push-rod-assembly-modification/documents"}}