{"id":"F2006B08114","name":"AD/CESSNA 210/65 - Fuel Line Chafing","slug":"ad-cessna-210-65-fuel-line-chafing","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":115224,"registerId":"commonwealth-F2006B08114-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/CESSNA 210/65 - Fuel Line Chafing","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 210/65 Fuel Line Chafing 1/92 DM\n\nApplicability: All Cessna 210 series with S/N 21059062 through 21064535, T210-0393 through T210-0454 and P21000001 through P21000760.\n\n \n\nRequirement: Unless previously carried out action in accordance with Cessna Service Information Letter SE82-32. A minimum clearance of 6.5mm (0.25 inches) must be obtained between the fuel line/electrical wiring loom.\n\n \n\nNote: FAA AD 91-22-01 Amdt 39-8061 refers.\n\n \n\nCompliance: Within 50 hours time in service from 22 November 1991 or by 30 April 1992, whichever occurs first.\n\n \n\nBackground: Chafing of the fuel line by the wiring loom in the nose gear tunnel area could result in an inflight fire.\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 addresses a specific safety hazard for a defined set of airframes and mandates a particular physical clearance. The instrument does not expand the population of affected aircraft or add new regulatory powers beyond requiring the stated corrective action for the listed serial numbers (Applicability; Requirement)."},"complexity_factors":["Narrow technical requirement: a single specific clearance value (6.5 mm) reduces interpretive complexity (Requirement).","Limited applicability: only particular serial numbers are covered, so scope is tightly defined (Applicability).","Short compliance window with a fixed deadline and hours‑in‑service metric adds logistical urgency but not legal complexity (Compliance).","Reliance on an external service document (Cessna Service Information Letter SE82‑32) means compliance requires access to that document (Requirement).","Safety‑critical context increases operational importance but does not add statutory complexity; enforcement is straightforward (Background; header)."],"plain_english_summary":"# What this instrument does\n\n- This is an Airworthiness Directive issued under the Civil Aviation Regulations (Part 39) by the Civil Aviation Safety Authority (CASA). It applies to a defined set of Cessna 210 series aeroplanes (listed by serial number) (Applicability). \n\n- The mechanical requirement is simple: obtain a minimum clearance of 6.5 mm (0.25 inches) between the fuel line and the electrical wiring loom in the nose‑gear tunnel area, following Cessna Service Information Letter SE82-32 if that action has not already been done (Requirement). \n\n- Aircraft owners/operators must carry out the work within 50 hours time in service from 22 November 1991 or by 30 April 1992, whichever is earlier (Compliance). The AD also refers to FAA AD 91-22-01 (Note). \n\n# Who this affects and who pays\n\n- Who decides: CASA (Civil Aviation Safety Authority) issued the directive under the Civil Aviation Regulations, and it references Cessna’s Service Information Letter as the prescribed method for compliance (header; Requirement). \n\n- Who pays: owners or operators of the affected Cessna 210 aircraft must pay for inspections and any modification, re‑routing or repairs needed to achieve the 6.5 mm clearance (Applicability; Requirement; Compliance). Maintenance providers or approved organisations carrying out the work will charge labour and parts. \n\n# Why it matters (stated purpose) and how the rule tests that purpose\n\n- Stated safety concern: the AD says that chafing of the fuel line by the wiring loom in the nose gear tunnel could result in an in‑flight fire (Background). The directive therefore mandates a physical separation to reduce that risk. \n\n- Trade‑offs and costs: achieving the specified clearance may require inspection, re‑routing, additional clamps, sleeves or replacement parts, and associated labour and aircraft downtime. Those are direct costs to owners/operators and opportunity costs from time out of service (Requirement; Compliance). \n\n- Incentives and behaviour change: the rule creates a clear compliance incentive—if you operate one of the listed aircraft, you must take action by the deadline or be non‑compliant. Maintenance providers have an incentive to offer the required correction, increasing demand for those services (Applicability; Requirement). \n\n- Implementation and enforcement mechanics: the AD prescribes a technical metric (6.5 mm) and a method reference (Cessna Service Information Letter SE82‑32). That reduces interpretive ambiguity about what fixes are acceptable, but it requires access to and use of the referenced service letter (Requirement). \n\n# Practical points and risks\n\n- Compliance burden is focused and time‑limited: an inspection and one corrective action for a defined set of serial numbers within a short compliance window (Compliance; Applicability). \n\n- Residual implementation risk stems from workmanship (whether the clearance is reliably checked and maintained) and from any ambiguity if an operator uses an alternative method to the referenced service letter (Requirement). \n\n- Market effects are narrow: the AD imposes a cost on owners/operators of the specified aircraft and creates demand for maintenance work; it does not change ownership rights, pricing structures or broader market regulation beyond this safety action. \n\n# Source citations\n\n- Applicability: lists affected serial numbers. \n- Requirement: mandates minimum 6.5 mm clearance and references Cessna Service Information Letter SE82‑32. \n- Compliance: sets the 50‑hour/30 April 1992 deadline. \n- Background: states the chafing risk and potential for in‑flight fire. \n- Note: references FAA AD 91‑22‑01."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive addressing a specific mechanical defect in a defined aircraft population. It has not expanded beyond its original purpose of mandating a specific repair to prevent fuel line chafing."},"complexity_factors":["Single, specific mechanical issue addressed (fuel line clearance)","Only 3 serial number ranges to check for applicability","One primary requirement with single compliance deadline","No nested exceptions or conditional logic","Short document (approximately 150 words of substantive content)","Only one cross-reference (to FAA AD 91-22-01 and Cessna Service Letter SE82-32)"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** — essentially a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA) for specific aircraft.\n\n**What it does:**\nOrders owners and operators of certain Cessna 210 series aeroplanes to inspect and fix a dangerous design flaw where fuel lines rub against electrical wiring in the nose gear area. This rubbing (called \"chafing\") could wear through the fuel line and cause an in-flight fire.\n\n**Who it affects:**\nOwners and operators of Cessna 210, T210, and P210 model aircraft with specific serial numbers manufactured between roughly 1979 and 1982 (serial ranges listed in the document).\n\n**What must be done:**\n- Ensure there is at least **6.5mm (quarter inch) clearance** between the fuel line and the wiring bundle\n- Follow the repair instructions in **Cessna Service Information Letter SE82-32**\n- Complete this work **within 50 flight hours after 22 November 1991, or by 30 April 1992** — whichever comes first\n\n**Why it matters:**\nThis is a life-safety issue. The background notes that chafing in the nose gear tunnel has the potential to cause fuel leaks and catastrophic in-flight fires. The directive makes compliance mandatory rather than optional."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-210-65-fuel-line-chafing","history":"/api/acts/ad-cessna-210-65-fuel-line-chafing/history","analysis":"/api/acts/ad-cessna-210-65-fuel-line-chafing/analysis","conflicts":"/api/acts/ad-cessna-210-65-fuel-line-chafing/conflicts","importantCases":"/api/acts/ad-cessna-210-65-fuel-line-chafing/important-cases","documents":"/api/acts/ad-cessna-210-65-fuel-line-chafing/documents"}}