{"id":"F2006B05700","name":"AD/PA-31/113 Amdt 1 - Elevator Hinge","slug":"ad-pa-31-113-amdt-1-elevator-hinge","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":135499,"registerId":"commonwealth-F2006B05700-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-31/113 Amdt 1 - Elevator Hinge","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)  Piper PA-31 Series Aeroplanes\n\n \n\nAD/PA-31/113\n\nAmdt 1\n\n\nElevator Hinge 11/86 DM\n\n \n\nApplicability: All model PA-31P with S/Nos 31P-03 to 31P-7730012 All model PA-31T with S/Nos 31T-7400001 to 31T-8120104 All model PA-31T1 with S/Nos 31T-7804001 to 31T-\n\n1104017 All model PA-31T2 with S/Nos 31T-8166001 to 31T-1166008 All model PA-31T3 with S/Nos 31T-8275001 to 31T-5575001\n\n \n\nRequirement: Unless already accomplished inspect in accordance with Piper Service Bulletin No 826A.\n\n \n\nCompliance: Within 25 hours time in service after 17 October 1986.\n\n \n\nBackground: Some elevator hinges on affected aircraft have forging defects which may lead to cracks developing. This could lead to loss of elevator control. This amendment increases the range of aircraft requiring inspection.\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":1886},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":true,"description":"This amendment expands the applicability to include additional aircraft serial numbers (specifically extending coverage within the PA-31T3 series and potentially other variants), increasing the number of aircraft required to undergo the elevator hinge inspection beyond the original AD/PA-31/113."},"complexity_factors":["Single compliance action but requires cross-referencing to external technical document (Piper Service Bulletin No 826A)","Detailed applicability limited to specific aircraft models and serial number ranges","Fixed compliance deadline with no conditional exceptions or extensions"],"plain_english_summary":"This directive requires owners/operators of specified Piper PA‑31 series (Navajo/Cheyenne) aircraft with listed serial numbers to have their elevator hinge assemblies inspected for forging defects per Piper Service Bulletin No. 826A within 25 flight hours after 17 Oct 1986. It expands the original applicability to additional serial numbers. The inspection aims to detect cracks that could cause complete hinge failure and loss of pitch control, preventing potential crashes."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-31-113-amdt-1-elevator-hinge","history":"/api/acts/ad-pa-31-113-amdt-1-elevator-hinge/history","analysis":"/api/acts/ad-pa-31-113-amdt-1-elevator-hinge/analysis","conflicts":"/api/acts/ad-pa-31-113-amdt-1-elevator-hinge/conflicts","importantCases":"/api/acts/ad-pa-31-113-amdt-1-elevator-hinge/important-cases","documents":"/api/acts/ad-pa-31-113-amdt-1-elevator-hinge/documents"}}