{"id":"F2006B05000","name":"AD/CESSNA 170/71 - Fuel Line/Map Light Switch","slug":"ad-cessna-170-71-fuel-line-map-light-switch","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":44909,"registerId":"commonwealth-F2006B05000-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AIRWORTHINESS DIRECTIVE","sectionType":"part","heading":"AIRWORTHINESS DIRECTIVE","content":"# ![](image.001.png)  \nAIRWORTHINESS DIRECTIVE\n\nFor the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CAR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.\n\n![](image.001.png)\n\nCessna 170, 172, F172, FR172 & 175 Series Aeroplanes","sortOrder":0},{"sectionNumber":"AD/CESSNA 170/71 Fuel Line/Map Light Swi","sectionType":"part","heading":"AD/CESSNA 170/71 Fuel Line/Map Light Switch 1/2002","content":"# AD/CESSNA 170/71 Fuel Line/Map Light Switch 1/2002\n\nApplicability: All Cessna 172 model aeroplanes with the following serial numbers: Model Serial Number\n\n172N 17267585 through 17270049; 17270051 through 17274009;\n\n17261445, 17261578, and 17270050\n\n172P 17274010 through 17276654\n\n172RG 172RG0001 through 172RG1191; and 691\n\nF172N F17201515 through F17202039\n\nF172P F17202040 through F17202254\n\nFR172J FR17200531 through 17200590\n\nFR172K FR17200591 through 17200675\n\nR172K R1722000 through R1723454; and 680\n\nRequirement: 1. Inspect the doorpost map light switch insulator assembly (part number 0511080- 1) to verify it is installed and (if installed) not damaged, in accordance with Cessna Service Bulletin SEB00-1 dated 17 January 2000.\n\n    2. If the switch cover insulator is not installed, or is damaged in any way, install a new insulator part number 0511080-1.\n\n    3. If the fuel line is damaged in any way, install a new fuel line.\n\nNote: FAA AD 2001-23-03 refers.\n\nCompliance: For Requirement 1 - Within the next 100 hours time in service from the effective date of this Directive.\n\nFor Requirement 2 - Before further flight following requirement 1 inspection. Fro Requirement 3 \\- Before further flight following requirement 1 inspection.","sortOrder":1}],"analysis":{"flash_summary_failed":{"failed":true,"reason":"A positive credit balance is required for all requests, including BYOK, so fallback providers remain available. Add credits at https://vercel.com/d?to=%2F%5Bteam%5D%2F%7E%2Fai%3Fmodal%3Dtop-up to continue.","source":"analysis-cron"},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"The document header names multiple Cessna series, but the Applicability section limits the AD to specific Cessna 172-series serial numbers. That narrows the practical scope compared with the broader model list in the heading and creates a potential discrepancy operators must resolve by following the Applicability section."},"complexity_factors":["Applicability limited to specific models and narrow serial-number ranges (Applicability section) — increases administrative tracking complexity for operators and maintenance providers.","Simple, binary inspection/repair requirements (Requirement 1–3) — lowers procedural complexity.","Short, specific compliance timeframes (100 hours; before further flight) — raises operational urgency and potential grounding costs.","Parts identification required (insulator P/N 0511080-1; fuel line) — dependency on correct parts availability and supply.","Cross-reference to FAA AD 2001-23-03 (Note) — may require coordination with foreign AD text for interpretation.","Discrepancy between the document header listing multiple Cessna series and the detailed applicability focused on 172-series serial numbers — adds scope-clarity risk."],"plain_english_summary":"Requires operators of the specified Cessna 172-series aircraft (listed by serial number) to inspect the doorpost map‑light switch insulator (P/N 0511080-1) and the adjacent fuel line, and to fit new parts if the insulator or fuel line is missing or damaged. The inspection must occur within 100 hours time-in-service and any required replacements must be done before further flight. The aircraft owner/operator pays for inspection and repairs; CASA enforces compliance under CAR 1998 subregulation 39.1(1)."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a narrow, targeted safety directive addressing a specific known defect in a defined aircraft population. The scope remains tightly focused on the original safety issue — preventing fuel line damage from electrical switch contact."},"complexity_factors":["Single, specific mechanical issue (one switch insulator)","Only 3 requirements with clear conditional logic (if X, then Y)","Limited applicability — specific aircraft models and serial number ranges only","No nested definitions or interpretation sections","Straightforward compliance timeline (100 hours or before next flight)","Single cross-reference to related FAA directive"],"plain_english_summary":"This AD mandates inspection and, if needed, replacement of the map‑light switch insulator on certain Cessna 172/ F172/ FR172/ R172 aircraft (serials circa 1977–1986). The insulator prevents the metal switch from contacting the nearby fuel line; missing or damaged insulation can cause chafing or arcing, creating a fire/explosion hazard. Inspect within 100 flight hours and replace the insulator—or the fuel line if damaged—before further flight."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-170-71-fuel-line-map-light-switch","history":"/api/acts/ad-cessna-170-71-fuel-line-map-light-switch/history","analysis":"/api/acts/ad-cessna-170-71-fuel-line-map-light-switch/analysis","conflicts":"/api/acts/ad-cessna-170-71-fuel-line-map-light-switch/conflicts","importantCases":"/api/acts/ad-cessna-170-71-fuel-line-map-light-switch/important-cases","documents":"/api/acts/ad-cessna-170-71-fuel-line-map-light-switch/documents"}}