{"id":"F2006B05629","name":"AD/PA-28/72 - Fuel Gascolator - Inspection","slug":"ad-pa-28-72-fuel-gascolator-inspection","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":135278,"registerId":"commonwealth-F2006B05629-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/PA-28/72 - Fuel Gascolator - Inspection","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-28/72 Fuel Gascolator - Inspection 1/79\n\nApplicability: Models: PA-28-161 with S/Nos. 28-7816002 to 28-7816643.\n\n \n\nPA-28R-201T with S/Nos. 28R-7803002 to 28R-7803325. PA-28R-201 with S/Nos. 28R-7837002 to 28R-7837275.\n\nDocument: Piper SB No. 612.\n\n \n\nCompliance: Within 100 hours time in service after 31 January 1979.\n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\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 addressing a specific technical issue in specific aircraft. It has not expanded beyond its original narrow scope of requiring a one-time inspection of the fuel gascolator on affected Piper PA-28 models."},"complexity_factors":["Extremely short document (under 200 words)","Only 3 defined applicability criteria (specific model/serial number combinations)","Single compliance requirement with clear deadline","No cross-references to other legislation beyond the parent Civil Aviation Regulations 1998","No conditional logic or exceptions","Simple command structure: inspect X by Y date"],"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). Think of it as a \"recall notice\" for aircraft, but legally binding.\n\n**What it requires:** Owners and operators of specific Piper PA-28 aeroplanes must inspect the **fuel gascolator** (a fuel filter/strainer that removes water and debris from aviation fuel before it reaches the engine) according to Piper Service Bulletin No. 612.\n\n**Who it affects:** Only three specific groups of aircraft:\n- **PA-28-161** models with serial numbers 28-7816002 through 28-7816643\n- **PA-28R-201T** models with serial numbers 28R-7803002 through 28R-7803325  \n- **PA-28R-201** models with serial numbers 28R-7837002 through 28R-7837275\n\n**When it had to be done:** Within 100 hours of flight time after 31 January 1979.\n\n**Why it matters:** Fuel contamination is a leading cause of engine failure in aviation. This directive addresses a specific safety defect in these aircraft models to prevent engine stoppage due to fuel system issues."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"Based solely on the supplied text, there is no indication the scope has changed from the instrument's stated content. The AD specifies the affected models and serial-number ranges, references Piper SB No. 612 for procedure, and sets a fixed compliance time (100 hours after 31 January 1979). The provided text contains the original applicability and compliance instructions and does not show any subsequent expansion or narrowing of scope."},"complexity_factors":["Narrow and explicit applicability by model and serial-number ranges reduces scope complexity but requires serial-number checks (\"Applicability: Models: PA-28-161 ... PA-28R-201 ... S/Nos. ...\").","Single prescriptive action (inspection) with a clear compliance window simplifies compliance logistics (\"Compliance: Within 100 hours time in service after 31 January 1979.\").","Procedural detail is not included in the AD and is delegated to an external document (Piper SB No. 612), requiring operators to obtain and interpret that bulletin (\"Document: Piper SB No. 612.\").","Potential for follow-on corrective work if the inspection finds defects creates uncertainty in total cost and downtime (implicit from inspection requirement and absence of corrective-action text).","Regulatory compliance monitoring and record-keeping obligations are implicit (typical for ADs) though not specified in the text, adding administrative steps for operators."],"plain_english_summary":"This AD mandates a one‑time inspection of the fuel gascolator on specified Piper PA‑28 serial numbers, to be performed per Piper Service Bulletin No. 612 within 100 hours time‑in‑service after 31 January 1979.  \n\nOwners/operators of the listed aircraft must obtain the SB, carry out the inspection (and any repairs), and bear the associated costs and downtime; the AD delegates procedural and corrective detail to the referenced service bulletin."}},"importantCases":[],"_links":{"self":"/api/acts/ad-pa-28-72-fuel-gascolator-inspection","history":"/api/acts/ad-pa-28-72-fuel-gascolator-inspection/history","analysis":"/api/acts/ad-pa-28-72-fuel-gascolator-inspection/analysis","conflicts":"/api/acts/ad-pa-28-72-fuel-gascolator-inspection/conflicts","importantCases":"/api/acts/ad-pa-28-72-fuel-gascolator-inspection/important-cases","documents":"/api/acts/ad-pa-28-72-fuel-gascolator-inspection/documents"}}