{"id":"F2006B05283","name":"AD/CESSNA 207/24 - Fuel Cap Alignment Placard","slug":"ad-cessna-207-24-fuel-cap-alignment-placard","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":45674,"registerId":"commonwealth-F2006B05283-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 207/24 - Fuel Cap Alignment Placard","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)  Cessna 207 Series Aeroplanes\n\n \n\nAD/CESSNA 207/24 Fuel Cap Alignment Placard 9/80\n\nApplicability: Models 207 and T207 with S/Nos 20700001 to 20700588. Requirement:  Action in accordance with Cessna SIL No SE 80-59.\n\nCompliance: Within 100 hours time in service after 30 September 1980.\n\n \n\nBackground: Correct alignment of flush fitting type fuel caps is essential for efficient operation of the fuel tank secondary vent system.\n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\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":1,"scope_assessment":{"changed":false,"description":"This is a discrete, time-bound airworthiness directive from 1980 with a single, specific purpose. It has not expanded beyond its original intent of addressing fuel cap alignment safety on specific Cessna 207 aircraft."},"complexity_factors":["Single, discrete requirement (install placard per external document)","No defined terms section","No conditional logic or nested exceptions","No cross-references to other legislation beyond one external technical document (Cessna SIL)","Extremely short (under 150 words of substantive content)","Clear applicability criteria (specific model numbers and serial number range)"],"plain_english_summary":"**What this is:** An Airworthiness Directive (AD) — essentially a mandatory safety notice issued by Australia's Civil Aviation Safety Authority (CASA) for specific aircraft.\n\n**What it requires:** Owners and operators of certain Cessna 207 aeroplanes must install a placard (a visible warning label) near the fuel caps. This placard reminds people to align the flush-fitting fuel caps correctly when closing them.\n\n**Why it matters:** If these fuel caps aren't aligned properly, the fuel tank's secondary vent system won't work efficiently. This could lead to fuel system problems, potentially affecting engine performance or safety in flight.\n\n**Who must comply:** Anyone operating Cessna 207 or T207 models with serial numbers between 20700001 and 20700588. They must follow the specific instructions in Cessna Service Information Letter (SIL) No. SE 80-59.\n\n**When:** The work must be done within 100 hours of flight time after 30 September 1980.\n\n**In short:** This is a one-off safety fix from 1980 requiring a simple label to prevent fuel cap misalignment on specific Cessna aircraft."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive’s operative scope — requiring the actions in Cessna SIL No SE 80-59 for Cessna 207/T207 serial numbers 20700001–20700588 within the stated 100-hour window — aligns with the document’s stated purpose (assuring correct fuel cap alignment to support the secondary vent system). There is no material indication in the text that the scope has been expanded or narrowed from that expressed purpose."},"complexity_factors":["Narrow affected population (specific models and serial number range) reduces operational complexity (Applicability).","Mandates compliance by reference to an external technical document (Cessna SIL No SE 80-59), which requires owners/operators to obtain and follow that document (Requirement).","Fixed, short compliance window tied to flight hours (100 hours after 30 Sep 1980) creates scheduling constraints (Compliance).","Directive is specific in action required but does not specify enforcement, evidence format, or alternative compliance routes, leaving verification practice to usual airworthiness oversight (Requirement; Compliance).","Technical nature of the task (fuel cap alignment and placard fitment) requires maintenance skill but is limited in scope (Background; Requirement)."],"plain_english_summary":"Owners/operators of Cessna 207 and T207 aircraft (S/N 20700001–20700588) must carry out the actions in Cessna Service Instruction Letter SE 80‑59 — aligning flush fuel caps and fitting a placard to protect the fuel tank secondary vent system — within 100 hours time‑in‑service after 30 September 1980.  \n\nCosts, parts and downtime are borne by the owner/operator; compliance is shown via maintenance records and inspection."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-207-24-fuel-cap-alignment-placard","history":"/api/acts/ad-cessna-207-24-fuel-cap-alignment-placard/history","analysis":"/api/acts/ad-cessna-207-24-fuel-cap-alignment-placard/analysis","conflicts":"/api/acts/ad-cessna-207-24-fuel-cap-alignment-placard/conflicts","importantCases":"/api/acts/ad-cessna-207-24-fuel-cap-alignment-placard/important-cases","documents":"/api/acts/ad-cessna-207-24-fuel-cap-alignment-placard/documents"}}