{"id":"F2006B08096","name":"AD/CESSNA 210/48 - Fuel Cap Alignment Placard - Installation","slug":"ad-cessna-210-48-fuel-cap-alignment-placard-installation","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115206,"registerId":"commonwealth-F2006B08096-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 210/48 - Fuel Cap Alignment Placard - Installation","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 210 Series Aeroplanes\n\n \n\nAD/CESSNA 210/48 Fuel Cap Alignment Placard - Installation 9/80\n\nApplicability: Models 210 and T210 with S/Nos. 616, 618, 57001 to 57575 and 21057576 to 21063870; Model P210 with S/Nos. P21000001 to P21000457.\n\n \n\nDocument: Cessna SIL No. SE 80-59.\n\n \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","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive, as presented, requires installation of a fuel-cap alignment placard for the listed Cessna 210-series serial numbers and sets a 100‑hour compliance window measured from 30 September 1980. There is no material indication in the text that its scope was altered from that expressed here; it remains directed only at the specified serial numbers and only requires the placard installation referenced to Cessna SIL SE 80-59."},"complexity_factors":["Narrow, specific applicability defined by explicit serial number ranges (Applicability).","Single, discrete action required (install a placard) referenced to a single manufacturer document (Document).","Fixed compliance window expressed in flight hours after a specified date (Compliance), requiring operational scheduling but not ongoing monitoring.","No technical repair or modification specified in the AD text itself — reliance on Cessna SIL for installation details reduces legal text complexity but introduces a dependency on an external document.","No explicit enforcement, penalty, or recordkeeping provisions stated in the text, limiting procedural complexity but leaving implementation details to owners/operators and maintenance providers."],"plain_english_summary":"This directive requires owners/operators of certain Cessna 210, T210 and P210 aeroplanes (specified serials) to install a fuel‑cap alignment placard per Cessna Service Instruction within the stated compliance window. It aims to promote correct orientation of flush‑fitting fuel caps to support efficient fuel‑tank secondary venting; owners/operators fund and schedule the work."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, single-issue airworthiness directive focused specifically on fuel cap placard installation. It has not expanded beyond its original narrow safety purpose."},"complexity_factors":["Very short document (approximately 150 words)","Only 4 defined elements: applicability (specific aircraft models/serial numbers), document reference, compliance deadline, and background","No cross-references to other legislation or regulations beyond the parent Civil Aviation Regulations 1998","Single, unambiguous requirement: install a placard","No conditional logic, exceptions, or nested provisions","Clear, technical aviation language but minimal legal drafting complexity"],"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) that requires aircraft owners to fix a specific safety problem.\n\n**What it does:** It orders owners of certain **Cessna 210 series aeroplanes** to install a **placard** (a warning label) near the fuel caps. This label shows pilots the correct way to align the flush-fitting fuel caps when closing them.\n\n**Why it matters:** If fuel caps aren't aligned correctly, the fuel tank's **secondary vent system** (a backup system that lets air escape from the tank) won't work properly. This can cause fuel leaks, fuel starvation, or even engine failure in flight.\n\n**Who must comply:** Owners of specific Cessna 210, T210, and P210 models with particular serial numbers (listed in the document).\n\n**When:** The work had to be done within **100 hours of flying time** after 30 September 1980.\n\n**How to comply:** Follow the instructions in **Cessna Service Information Letter SE 80-59**."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-210-48-fuel-cap-alignment-placard-installation","history":"/api/acts/ad-cessna-210-48-fuel-cap-alignment-placard-installation/history","analysis":"/api/acts/ad-cessna-210-48-fuel-cap-alignment-placard-installation/analysis","conflicts":"/api/acts/ad-cessna-210-48-fuel-cap-alignment-placard-installation/conflicts","importantCases":"/api/acts/ad-cessna-210-48-fuel-cap-alignment-placard-installation/important-cases","documents":"/api/acts/ad-cessna-210-48-fuel-cap-alignment-placard-installation/documents"}}