{"id":"F2006B10966","name":"AD/JT15D/2 - Deletion of Oil Filler Drain Tubes","slug":"ad-jt15d-2-deletion-of-oil-filler-drain-tubes","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":56539,"registerId":"commonwealth-F2006B10966-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/JT15D/2 - Deletion of Oil Filler Drain Tubes","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 - 106 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  Pratt and Whitney Canada Turbine Engines - JT15D Series\n\n \n\nAD/JT15D/2 Deletion of Oil Filler Drain Tubes 10/85\n\nApplicability: JT15D-1. All engines prior to S/Nos. PC-E76157 excepting PC-E76154 and PC- E76155.\n\n \n\nDocument: 1. UACL SB No. 319, Rev. 1; or\n\n \n\n2.    UACL SB No. 7035; or\n\n \n\n3.    AD/UAC-T/17.\n\n \n\nCompliance: In accordance with the Requirement Document.\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":1333},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive maintains its original narrow technical scope from 1985—addressing a specific hardware modification (deletion of oil filler drain tubes) on a specific engine model. There is no evidence of scope creep or expansion beyond the original safety-related engineering change."},"complexity_factors":["Extremely short directive (under 150 words of substantive content)","Single, unambiguous action required (removal of specific component)","Simple applicability test based on engine serial number ranges","Only three external reference documents, with no internal defined terms","No conditional logic, exceptions to exceptions, or procedural branching"],"plain_english_summary":"**What this does:** This is a mandatory aviation safety directive (called an Airworthiness Directive) that requires aircraft owners or operators to remove the oil filler drain tubes from specific Pratt & Whitney Canada aircraft engines.\n\n**Who it affects:** Anyone responsible for aircraft powered by JT15D-1 engines with serial numbers earlier than PC-E76157, with two exceptions (engines PC-E76154 and PC-E76155 are excluded from this requirement).\n\n**What you must do:** Follow the technical instructions in one of three specified documents—either United Aircraft Service Bulletin No. 319 (Revision 1), Service Bulletin No. 7035, or the previous Airworthiness Directive AD/UAC-T/17—to remove these drain tubes.\n\n**Why it matters:** Airworthiness Directives are legally enforceable safety rules. If you don't comply with this requirement, your aircraft is considered unsafe to fly under Australian aviation law and cannot legally operate."}},"importantCases":[],"_links":{"self":"/api/acts/ad-jt15d-2-deletion-of-oil-filler-drain-tubes","history":"/api/acts/ad-jt15d-2-deletion-of-oil-filler-drain-tubes/history","analysis":"/api/acts/ad-jt15d-2-deletion-of-oil-filler-drain-tubes/analysis","conflicts":"/api/acts/ad-jt15d-2-deletion-of-oil-filler-drain-tubes/conflicts","importantCases":"/api/acts/ad-jt15d-2-deletion-of-oil-filler-drain-tubes/important-cases","documents":"/api/acts/ad-jt15d-2-deletion-of-oil-filler-drain-tubes/documents"}}