{"id":"F2006B05841","name":"AD/PA-32/45 - Lower Cowl Drain - Inspection and Modification","slug":"ad-pa-32-45-lower-cowl-drain-inspection-and-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":135855,"registerId":"commonwealth-F2006B05841-current","compilationNumber":null,"startDate":"2026-04-03","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-32/45 - Lower Cowl Drain - Inspection and 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 - 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  Piper PA-32 (Cherokee Six) Series Aeroplanes\n\n \n\nAD/PA-32/45 Lower Cowl Drain - Inspection and Modification\n\nApplicability: Model PA-32-260 with S/Nos. 32-01 to 32-7600023. Document:  Piper SL No. 796.\n\nCompliance: Within 100 hours time in service after 31 May 1977.\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\n \n\n\n5/77\n","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1635},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is the original 1977 directive (marked 5/77) establishing the initial requirement. No amendments or scope expansion are evident in the text."},"complexity_factors":["Single aircraft model and specific serial number range (32-01 to 32-7600023)","Simple time-based compliance trigger (100 hours time in service after fixed date)","References only one external technical document (Piper Service Letter No. 796)","No exceptions, conditional clauses, or alternative compliance methods","Extremely short operative text (approximately 8 lines)"],"plain_english_summary":"**What this is:** An Airworthiness Directive (AD) — a mandatory safety order issued by the Civil Aviation Safety Authority (CASA) that aircraft owners must follow to keep their planes legally airworthy.\n\n**What it requires:** Owners of specific Piper Cherokee Six aircraft (model **PA-32-260** with serial numbers from **32-01 to 32-7600023**) must inspect and modify the **lower cowl drain** — a drainage hole in the engine compartment cowling. \n\n**Deadline:** The work must be completed within **100 hours of flight time** after **31 May 1977**.\n\n**Why it matters:** Cowl drains prevent moisture, debris, and potentially dangerous gases (like carbon monoxide) from accumulating in the engine compartment. This directive likely addresses a design flaw or safety risk identified by the manufacturer (referenced in Piper Service Letter No. 796).\n\n**Who is affected:** Operators and owners of the specific Piper aircraft listed above."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-32-45-lower-cowl-drain-inspection-and-modification","history":"/api/acts/ad-pa-32-45-lower-cowl-drain-inspection-and-modification/history","analysis":"/api/acts/ad-pa-32-45-lower-cowl-drain-inspection-and-modification/analysis","conflicts":"/api/acts/ad-pa-32-45-lower-cowl-drain-inspection-and-modification/conflicts","importantCases":"/api/acts/ad-pa-32-45-lower-cowl-drain-inspection-and-modification/important-cases","documents":"/api/acts/ad-pa-32-45-lower-cowl-drain-inspection-and-modification/documents"}}