{"id":"F2006B02141","name":"AD/AC/80 Amdt 1 - Aileron Leading Edge Skin - Modification","slug":"ad-ac-80-amdt-1-aileron-leading-edge-skin-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41371,"registerId":"commonwealth-F2006B02141-current","compilationNumber":null,"startDate":"2026-04-01","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/AC/80 Amdt 1 - Aileron Leading Edge Skin - Modification","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nTwin Commander (Gulfstream/Rockwell/ Aerocommander 500, 600 and 700) Series Aeroplanes\n\nAD/AC/80\n\nAmdt 1\n\n  \nAileron Leading Edge Skin \\- Modification 2/84\n\nApplicability: All model 690C with S/Nos. 11600 through 11664 and 11666 through 11721, 11723,\n\n11726 and 11727 (See Note).\n\nAll Model 690D with S/Nos. 15001 through 15006, 15008 through 15011, 15014,\n\n15016 and 15018.\n\nAll Model 695 with S/Nos. 95000 through 95084. (See Note).\n\nAll Model 695A with S/Nos. 96001 through 96037, 96039, 96040, 96042, 96044\n\nthrough 96052.\n\nNote: Gulfstream Aerospace (Commander Division) SB. No. 178A must be accomplished in conjunction with the referenced requirement document for model 690C with S/Nos. 11600 through 11666 and model 695 with S/Nos. 95000 through\n\n95063.\n\nDocument: Gulfstream Aerospace S.L. No. 357A.\n\nCompliance: Unless already accomplished, within 100 hours’ time in service after 31 July 1983.\n\nBackground: This Directive has been amended because of various revisions to the original issue of the requirement document.","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1966},"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This amendment updates the directive to reflect revisions to the original Gulfstream technical document (Service Letter No. 357A), but does not expand the scope beyond the original safety issue regarding aileron leading edge skin modifications for the specified Twin Commander aircraft models."},"complexity_factors":["Multiple specific serial number ranges across four aircraft models with non-consecutive numbering","Cross-reference to external technical documents (Gulfstream Service Letter No. 357A and Service Bulletin No. 178A)","Conditional requirement applying only to specific serial number ranges within the broader applicability","Technical aviation terminology requiring specialized engineering knowledge to interpret"],"plain_english_summary":"This mandatory safety directive requires owners/operators of certain Twin Commander 690C/690D/695/695A aircraft (specific serial numbers) to modify the aileron leading-edge skin per Gulfstream Aerospace Service Letter No. 357A (and, for select 690C/695 airframes, also Service Bulletin No. 178A). Work must be done within 100 flight hours after 31 July 1983 if not already accomplished. It prevents potential structural failure and unsafe flight conditions."}},"importantCases":[],"_links":{"self":"/api/acts/ad-ac-80-amdt-1-aileron-leading-edge-skin-modification","history":"/api/acts/ad-ac-80-amdt-1-aileron-leading-edge-skin-modification/history","analysis":"/api/acts/ad-ac-80-amdt-1-aileron-leading-edge-skin-modification/analysis","conflicts":"/api/acts/ad-ac-80-amdt-1-aileron-leading-edge-skin-modification/conflicts","importantCases":"/api/acts/ad-ac-80-amdt-1-aileron-leading-edge-skin-modification/important-cases","documents":"/api/acts/ad-ac-80-amdt-1-aileron-leading-edge-skin-modification/documents"}}