{"id":"F2006B06405","name":"AD/PW-P/17 - Propeller Oil Feed Pipe - Modification","slug":"ad-pw-p-17-propeller-oil-feed-pipe-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":47738,"registerId":"commonwealth-F2006B06405-current","compilationNumber":null,"startDate":"2026-04-02","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PW-P/17 - Propeller Oil Feed Pipe - Modification","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 Piston Engines\n\n \n\nAD/PW-P/17 Propeller Oil Feed Pipe - Modification NK\n\nApplicability: R1340-S3H1-G series.\n\n \n\nDocument: Commonwealth Aircraft Corporation Ceres SB No. 41.\n\n \n\nCompliance: Installed Engines : Before installation in an aircraft following next overhaul completed after 2 November 1967.\n\n \n\nSpare Engines : Before installation in an aircraft after 2 November 1967.\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":1445},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive retains its original narrow scope: a specific one-off modification for a single engine series. There is no evidence of expansion beyond the original airworthiness safety purpose."},"complexity_factors":["Single technical requirement with no subsections or definitions","Minimal conditional logic (only distinction between installed and spare engines)","No cross-references to other legislative provisions","Reliance on external technical standard (Service Bulletin No. 41) without complex incorporation by reference language"],"plain_english_summary":"**What it is:** A mandatory safety directive requiring a specific mechanical modification to certain aircraft engines.\n\n**Who it affects:** Owners and operators of **Pratt & Whitney R1340-S3H1-G series engines** (a type of radial piston engine commonly found in older agricultural and utility aircraft like the Commonwealth Ceres).\n\n**What you must do:** Modify the **propeller oil feed pipe** (the tube that delivers oil to the propeller's pitch-change mechanism) according to Commonwealth Aircraft Corporation Service Bulletin No. 41.\n\n**When:**\n- **Installed engines:** Before installing the engine in an aircraft following any overhaul completed after 2 November 1967\n- **Spare engines:** Before installing the engine in an aircraft after 2 November 1967\n\n**Why it matters:** This prevents potential oil starvation or leaks in the propeller system that could cause propeller malfunction or engine failure during flight."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pw-p-17-propeller-oil-feed-pipe-modification","history":"/api/acts/ad-pw-p-17-propeller-oil-feed-pipe-modification/history","analysis":"/api/acts/ad-pw-p-17-propeller-oil-feed-pipe-modification/analysis","conflicts":"/api/acts/ad-pw-p-17-propeller-oil-feed-pipe-modification/conflicts","importantCases":"/api/acts/ad-pw-p-17-propeller-oil-feed-pipe-modification/important-cases","documents":"/api/acts/ad-pw-p-17-propeller-oil-feed-pipe-modification/documents"}}