{"id":"F2006B05622","name":"AD/PA-28/65 - Fuel Tank Vent - Inspection and Modification","slug":"ad-pa-28-65-fuel-tank-vent-inspection-and-modification","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":135270,"registerId":"commonwealth-F2006B05622-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-28/65 - Fuel Tank Vent - 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-28 Series Aeroplanes\n\n \n\nAD/PA-28/65 Fuel Tank Vent - Inspection and Modification 7/77\n\nApplicability: Model PA-28-235 with S/Nos. 28-10001 to 28-7710040. Document:  Piper SB No. 342, pages 2 and 3; AND\n\nPiper SB No. 571, Part C.\n\n \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","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive focused on a specific mechanical defect in a narrow aircraft population. It has not expanded beyond its original technical safety purpose."},"complexity_factors":["Very short document (approximately 150 words of substantive content)","Only 2 defined applicability criteria (model type and serial number range)","Simple compliance structure: single deadline with single metric (hours time in service)","No nested exceptions or conditional logic","References external technical documents (Service Bulletins) rather than embedding complex technical specifications","No cross-references to other legislation or regulations beyond the enabling authority (CAR 1998 Part 39)"],"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 modify the fuel tank vent system. The directive references two Piper Service Bulletins (SB 342 and SB 571 Part C) which contain the technical instructions for the work.\n\n**Who it affects:** Only specific aircraft — Piper PA-28-235 models with serial numbers between 28-10001 and 28-7710040.\n\n**Why it matters:** Fuel tank vents prevent dangerous pressure build-ups or vacuum conditions that could cause engine fuel starvation or tank damage. This AD addresses a known safety defect in these specific aircraft.\n\n**What must be done:** The inspection and modification must be completed within 100 hours of flight time after 31 July 1977. This is a hard deadline measured by actual flying hours, not calendar time."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The supplied text sets out a single, specific requirement for a defined set of aircraft, cites the service documents to be used, and gives a fixed compliance deadline. The text contains no information indicating that the scope was changed from an earlier version or from the original intent."},"complexity_factors":["Narrow applicability to a single model and a defined serial-number block (Applicability)","Mandatory technical actions referenced to external documents (Piper SB No. 342 pages 2–3 and SB No. 571 Part C) rather than reproduced in full (Applicability)","Single fixed compliance window tied to hours time in service after a historical date (Compliance)","Directive prescribes inspection and modification—technical maintenance work requiring appropriate facilities and personnel (title: \"Fuel Tank Vent - Inspection and Modification\")"],"plain_english_summary":"This Airworthiness Directive mandates inspection and modification of the fuel‑tank vent on Piper PA‑28‑235 aircraft (serials 28‑10001 through 28‑7710040), using the procedures in Piper Service Bulletins No. 342 and No. 571 (Part C). Affected operators must complete the work within 100 hours time‑in‑service after 31 July 1977; compliance is required to meet the AD."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-28-65-fuel-tank-vent-inspection-and-modification","history":"/api/acts/ad-pa-28-65-fuel-tank-vent-inspection-and-modification/history","analysis":"/api/acts/ad-pa-28-65-fuel-tank-vent-inspection-and-modification/analysis","conflicts":"/api/acts/ad-pa-28-65-fuel-tank-vent-inspection-and-modification/conflicts","importantCases":"/api/acts/ad-pa-28-65-fuel-tank-vent-inspection-and-modification/important-cases","documents":"/api/acts/ad-pa-28-65-fuel-tank-vent-inspection-and-modification/documents"}}