{"id":"F2006B05775","name":"AD/PA-31/70 - Elevator Outboard Hinge Bracket Rivets - Replacement","slug":"ad-pa-31-70-elevator-outboard-hinge-bracket-rivets-replacement","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":135638,"registerId":"commonwealth-F2006B05775-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-31/70 - Elevator Outboard Hinge Bracket Rivets - Replacement","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-31/70 Elevator Outboard Hinge Bracket Rivets - Replacement\n\n\n8/78\n\n \n\nApplicability: All models PA-31 and PA-31-325 with S/Nos. 31-7612040 to 31-7812055. All model PA-31-350 with S/Nos. 31-7652071 to 31-7852057.\n\n \n\nDocument: Piper SB No. 595.\n\n \n\nCompliance: Within 100 hours time in service after 19 July 1978.\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\n \n\n \n\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1688},"content_quality":"ok","complexity_score":1,"scope_assessment":{"changed":false,"description":"This directive remains precisely targeted at its original narrow technical purpose: correcting a specific airworthiness deficiency (rivet failure risk) in specific aircraft. There is no expansion beyond the original safety-critical maintenance requirement."},"complexity_factors":["Single, specific mechanical task with no sub-conditions","No defined terms or interpretation sections","Applicability limited to specific aircraft models and serial number ranges only","Straightforward compliance deadline with no exceptions, extensions, or alternative methods"],"plain_english_summary":"**What this does:** This is a safety order (an Airworthiness Directive) that requires owners or operators of specific Piper PA-31 aircraft to replace rivets on the elevator outboard hinge brackets.\n\n**Who it affects:** Owners and operators of:\n- Piper PA-31 and PA-31-325 aircraft with serial numbers 31-7612040 to 31-7812055\n- Piper PA-31-350 aircraft with serial numbers 31-7652071 to 31-7852057\n\n**What must be done:** The rivets on the outboard hinge brackets of the elevator (the movable tail surface that controls up/down movement) must be replaced following the instructions in Piper Service Bulletin No. 595.\n\n**Deadline:** The work must be completed within 100 hours of flight time after 19 July 1978.\n\n**Why it matters:** This prevents potential structural failure of the elevator hinge brackets, which could cause loss of control of the aircraft."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-31-70-elevator-outboard-hinge-bracket-rivets-replacement","history":"/api/acts/ad-pa-31-70-elevator-outboard-hinge-bracket-rivets-replacement/history","analysis":"/api/acts/ad-pa-31-70-elevator-outboard-hinge-bracket-rivets-replacement/analysis","conflicts":"/api/acts/ad-pa-31-70-elevator-outboard-hinge-bracket-rivets-replacement/conflicts","importantCases":"/api/acts/ad-pa-31-70-elevator-outboard-hinge-bracket-rivets-replacement/important-cases","documents":"/api/acts/ad-pa-31-70-elevator-outboard-hinge-bracket-rivets-replacement/documents"}}