{"id":"F2006B05620","name":"AD/PA-28/63 - Fuel Filler Cap - Inspection and Replacement","slug":"ad-pa-28-63-fuel-filler-cap-inspection-and-replacement","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":135265,"registerId":"commonwealth-F2006B05620-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-28/63 - Fuel Filler Cap - Inspection and Replacement","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-28 Series Aeroplanes\n\n \n\nAD/PA-28/63 Fuel Filler Cap - Inspection and Replacement 7/77\n\nApplicability: Model PA-28-235 with S/Nos. 28-10001 to 28-11236. Document:  Piper SB No. 571, Part B.\n\nCompliance: Within 100 hours time in service after 31 July 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 \n","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive remains narrowly focused on requiring inspection and replacement of the fuel filler cap for the listed PA-28-235 serial numbers, using Piper Service Bulletin No. 571, Part B, completed within 100 hours time in service after 31 July 1977. The scope as expressed in the document is consistent with that stated purpose and contains no additional broadened duties or extended applicability beyond what is specified. (Applicability; Document; Compliance.)"},"complexity_factors":["Single, narrowly defined applicability (Model PA-28-235, S/N 28-10001 to 28-11236). (Applicability.)","Action is simple in form (inspect and replace fuel filler cap) but the AD delegates technical procedures to an external document (Piper SB No. 571, Part B), creating a dependency. (Document.)","Fixed, short compliance timeframe (within 100 hours time in service after 31 July 1977) requires scheduling but is straightforward. (Compliance.)","AD contains no alternative compliance paths, exemption provisions, or detailed procedural text within the AD itself, reducing internal complexity but increasing reliance on the service bulletin. (Document.)","Regulatory responsibility and enforcement are clear (Civil Aviation Safety Authority), so administrative discretion is limited in the AD text. (Header.)"],"plain_english_summary":"This CASA Airworthiness Directive requires owners/operators of Piper PA‑28‑235 aeroplanes (S/N 28‑10001 to 28‑11236) to inspect—and replace if needed—the fuel filler cap per Piper Service Bulletin No. 571, Part B.  \n\nWork must be done within 100 hours time‑in‑service after 31 July 1977; compliance is mandatory, enforced by CASA, and costs fall to the affected owners/operators and their maintenance providers."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, single-issue safety directive focused specifically on fuel filler caps for one aircraft model. It has not expanded beyond its original technical scope."},"complexity_factors":["Extremely short document (under 200 words)","Only 4 operative elements: applicability, reference document, compliance deadline, and affected serial number range","No defined terms section","No cross-references to other legislation beyond the enabling Civil Aviation Regulations 1998","Single, unambiguous compliance action with clear deadline","No conditional logic, exceptions, or nested provisions"],"plain_english_summary":"**What this is:** 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:** It requires owners and operators of specific Piper PA-28-235 aircraft to **inspect and replace the fuel filler cap** on their planes. This is a safety-critical fix to prevent potential fuel leaks or contamination.\n\n**Who it affects:** \n- **Aircraft owners/operators** of Piper PA-28-235 model planes with **serial numbers 28-10001 through 28-11236**\n- **Maintenance engineers** who perform the work\n\n**What must be done:**\n- Follow the instructions in **Piper Service Bulletin No. 571, Part B** (the manufacturer's official repair guidance)\n- Complete the work **within 100 hours of flight time** after 31 July 1977\n\n**Why it matters:** Fuel system defects can cause engine failure, fires, or forced landings. ADs are legally binding — ignoring them grounds the aircraft (makes it illegal to fly)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-28-63-fuel-filler-cap-inspection-and-replacement","history":"/api/acts/ad-pa-28-63-fuel-filler-cap-inspection-and-replacement/history","analysis":"/api/acts/ad-pa-28-63-fuel-filler-cap-inspection-and-replacement/analysis","conflicts":"/api/acts/ad-pa-28-63-fuel-filler-cap-inspection-and-replacement/conflicts","importantCases":"/api/acts/ad-pa-28-63-fuel-filler-cap-inspection-and-replacement/important-cases","documents":"/api/acts/ad-pa-28-63-fuel-filler-cap-inspection-and-replacement/documents"}}