{"id":"F2006B05964","name":"AD/PA-38/25 - Fuselage Frame at Rear Spar","slug":"ad-pa-38-25-fuselage-frame-at-rear-spar","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":136139,"registerId":"commonwealth-F2006B05964-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-38/25 - Fuselage Frame at Rear Spar","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-38 (Tomahawk) Series Aeroplanes\n\n \n\nAD/PA-38/25 Fuselage Frame at Rear Spar 7/86 DM\n\nApplicability: PA-38-112 aircraft serial numbers 38-78A0001 through 38-80A0198.\n\n \n\nRequirement: Inspect the Rear Spar Frame Assembly P/No 77467-09 at Fuselage Station 99.29 for cracks.\n\n \n\nCompliance: Within 100 hours time in service after 19 June 1986, or at the next scheduled inspection for Maintenance Release issue after 19 June 1986, and thereafter at intervals not exceeding 100 hours time in service until reinforced in accordance with Piper S.B. 834.\n\n \n\nBackground: Cracking and distortion are being experienced in service, probably as a result of ground handling loads.\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":971},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This Airworthiness Directive remains targeted at its original purpose: addressing a specific airworthiness deficiency (fuselage frame cracking) in a limited production run of PA-38 aircraft. The scope has not expanded beyond the initial safety concern identified in 1986."},"complexity_factors":["Single specific inspection requirement with clear physical location (Fuselage Station 99.29)","Specific part number (77467-09) and limited serial number range applicability","External reference to manufacturer service bulletin (Piper S.B. 834) for the terminating action","Straightforward compliance timeline based on flight hours (100 hours Time in Service)"],"plain_english_summary":"This is a safety inspection order for owners of specific **Piper PA-38 Tomahawk** light aircraft (serial numbers 38-78A0001 through 38-80A0198).\n\n**What it requires:**\nOwners must inspect a specific structural part—the **Rear Spar Frame Assembly** (part number 77467-09) located at Fuselage Station 99.29—for cracks.\n\n**Why it matters:**\nThese aircraft were experiencing cracking and distortion in this frame, likely caused by stresses during ground handling (towing, parking, etc.). If left unchecked, this could compromise the aircraft's structural integrity.\n\n**When to comply:**\n*   **First inspection:** Within 100 hours of flight time after 19 June 1986, or at the next scheduled maintenance check—whichever comes first.\n*   **Ongoing inspections:** Every 100 hours of flight time thereafter.\n*   **Stop condition:** You can stop these recurring inspections once the frame has been reinforced according to **Piper Service Bulletin 834** (a manufacturer-issued repair instruction)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-38-25-fuselage-frame-at-rear-spar","history":"/api/acts/ad-pa-38-25-fuselage-frame-at-rear-spar/history","analysis":"/api/acts/ad-pa-38-25-fuselage-frame-at-rear-spar/analysis","conflicts":"/api/acts/ad-pa-38-25-fuselage-frame-at-rear-spar/conflicts","importantCases":"/api/acts/ad-pa-38-25-fuselage-frame-at-rear-spar/important-cases","documents":"/api/acts/ad-pa-38-25-fuselage-frame-at-rear-spar/documents"}}