{"id":"F2006B06700","name":"AD/S-76/18 - Pilot and Co-Pilot Seats, Support Frames - Inspection","slug":"ad-s-76-18-pilot-and-co-pilot-seats-support-frames-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":114508,"registerId":"commonwealth-F2006B06700-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/S-76/18 - Pilot and Co-Pilot Seats, Support Frames - 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)  Sikorsky S-76 Series Helicopters\n\n \n\nAD/S-76/18 Pilot and Co-Pilot Seats, Support Frames - Inspection 5/81\n\nApplicability: All series S76 helicopters fitted with AMI Industries seats P/Nos. 1078-1 and 1078-3 with S/Nos listed in AMI Industries SB No. 25-S76-1.\n\n \n\nDocuments: Sikorsky Customer Service Notice No. 76-63 and AMI Industries SB No. 25-S76-1.\n\n \n\nNote: AMI Industries SB No. 25-S76-1 is referenced in and attached to Sikorsky\n\nC.S.N. No. 76-63.\n\n \n\nCompliance: Inspect by 9 May 1981, repair as per AMI Industries SB No. 25-S76-1.\n\n \n\nBackground: The manufacturer has advised that some pilot and co-pilot seats may have defective tube support members.\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\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":2207},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This appears to be the original issue of the Airworthiness Directive targeting a specific, identified manufacturing defect in seat support frames. The scope remains tightly focused on the specific helicopter model and seat serial numbers originally identified as affected."},"complexity_factors":["Single compliance action with a specific deadline (inspect and repair by fixed date)","Limited applicability requiring cross-check of three criteria (aircraft model, seat part number, and serial number)","Reliance on external technical documents (Service Bulletins) for detailed inspection and repair procedures","No defined terms, exceptions, or conditional clauses within the directive itself"],"plain_english_summary":"**What this does:** This is a mandatory safety directive requiring inspection and potential repair of pilot and co-pilot seats in specific Sikorsky S-76 helicopters due to manufacturing defects in the seat support frames.\n\n**Who it affects:** Operators of Sikorsky S-76 helicopters fitted with AMI Industries seats (part numbers 1078-1 and 1078-3) that have serial numbers listed in the manufacturer's Service Bulletin No. 25-S76-1.\n\n**What must be done:** Operators must inspect the seat support frames by **9 May 1981** (or before the next flight if the helicopter is already flying after this date) to check for defective tube support members. If defects are found, repairs must be carried out strictly following the procedures in AMI Industries Service Bulletin No. 25-S76-1.\n\n**Why it matters:** Defective seat support members could fail during an accident, hard landing, or turbulence, potentially injuring the flight crew or preventing them from properly controlling the aircraft."}},"importantCases":[],"_links":{"self":"/api/acts/ad-s-76-18-pilot-and-co-pilot-seats-support-frames-inspection","history":"/api/acts/ad-s-76-18-pilot-and-co-pilot-seats-support-frames-inspection/history","analysis":"/api/acts/ad-s-76-18-pilot-and-co-pilot-seats-support-frames-inspection/analysis","conflicts":"/api/acts/ad-s-76-18-pilot-and-co-pilot-seats-support-frames-inspection/conflicts","importantCases":"/api/acts/ad-s-76-18-pilot-and-co-pilot-seats-support-frames-inspection/important-cases","documents":"/api/acts/ad-s-76-18-pilot-and-co-pilot-seats-support-frames-inspection/documents"}}