{"id":"F2006B05807","name":"AD/PA-32/13 - Fuel System - Modification","slug":"ad-pa-32-13-fuel-system-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":135743,"registerId":"commonwealth-F2006B05807-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-32/13 - Fuel System - 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-32/13 Fuel System - Modification 7/68\n\nApplicability: All model PA-32-300 with S/Nos. 32-40154 to 32-40265. Document:  Piper SB No. 249.\n\nCompliance: Within 100 hours time in service after 11 July 1968.\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 \n","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a historical Airworthiness Directive from 1968 (indicated by '7/68' in the reference number). It remains exactly what it was originally intended to be: a targeted safety mandate for a specific fuel system defect in a limited production run of aircraft. No scope creep is evident."},"complexity_factors":["Extremely short document — only 4 substantive lines","No defined terms section — all terms are standard aviation terminology","Single, unambiguous compliance requirement (100 hours time in service)","No cross-references to other legislation beyond the enabling regulation (CAR 1998 Part 39)","No conditional logic or exceptions — applies to all aircraft in the serial number range without qualification","Clear applicability criteria (specific model and serial number range)"],"plain_english_summary":"**What this is:** An Airworthiness Directive (AD) — a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA) under the Civil Aviation Regulations 1998.\n\n**What it does:** Requires owners and operators of specific Piper PA-32-300 aircraft (Cherokee Six models with serial numbers 32-40154 through 32-40265) to modify their fuel systems. The modification must follow Piper Service Bulletin No. 249.\n\n**Who it affects:** Anyone who owns, operates, or maintains the affected Piper Cherokee Six aircraft — specifically those 112 aircraft in the serial number range listed.\n\n**Why it matters:** Fuel system defects can cause engine failure or fire. This directive mandates a fix to prevent potentially catastrophic accidents. Compliance is legally required within 100 hours of flight time after 11 July 1968.\n\n**Key deadline:** The work had to be completed within 100 hours of \"time in service\" (actual flying hours, not calendar time) starting from 11 July 1968."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive's scope is explicit and limited in the text provided: it applies only to PA-32-300 aeroplanes with serial numbers 32-40154 to 32-40265 and requires a fuel-system modification per Piper SB No. 249 to be completed within a stated 100-hour window after 11 July 1968. There is no indication in the supplied text that the applicability or the required action has been broadened or narrowed from that stated scope."},"complexity_factors":["Narrow applicability: limited to PA-32-300 serial numbers 32-40154–32-40265 (Applicability).","Single prescriptive action: a single fuel-system modification is mandated rather than multiple or staged requirements (Document).","External-method dependence: the AD requires compliance by reference to Piper SB No. 249 rather than setting out technical steps within the directive (Document), which requires operators to obtain and follow an external document.","Fixed compliance window: a clear, short-term deadline is specified (within 100 hours TIS after 11 July 1968), which simplifies timing but requires record checks against that date (Compliance).","Limited procedural detail: the AD text supplied does not specify verification, approval of alternatives or enforcement processes, which may create follow-up administrative questions despite the technical clarity (overall text)."],"plain_english_summary":"The Civil Aviation Safety Authority mandates a fuel‑system modification for Piper PA‑32‑300 (Cherokee Six) aeroplanes serial nos. 32‑40154 through 32‑40265, to be carried out per Piper Service Bulletin No. 249. Owners/operators must complete the work within 100 hours time in service after 11 July 1968; CASA is the issuing authority."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-32-13-fuel-system-modification","history":"/api/acts/ad-pa-32-13-fuel-system-modification/history","analysis":"/api/acts/ad-pa-32-13-fuel-system-modification/analysis","conflicts":"/api/acts/ad-pa-32-13-fuel-system-modification/conflicts","importantCases":"/api/acts/ad-pa-32-13-fuel-system-modification/important-cases","documents":"/api/acts/ad-pa-32-13-fuel-system-modification/documents"}}