{"id":"F2006B05258","name":"AD/CESSNA 206/52 - Fuel Strainer","slug":"ad-cessna-206-52-fuel-strainer","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":45609,"registerId":"commonwealth-F2006B05258-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AIRWORTHINESS DIRECTIVE","sectionType":"part","heading":"AIRWORTHINESS DIRECTIVE","content":"# AIRWORTHINESS DIRECTIVE\n\n![](image.002.png)\n\n![](image.002.png)  \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.","sortOrder":0},{"sectionNumber":"AD/CESSNA 206/52 Fuel Strainer 7/2000","sectionType":"part","heading":"AD/CESSNA 206/52 Fuel Strainer 7/2000","content":"# AD/CESSNA 206/52 Fuel Strainer 7/2000\n\nApplicability: Models U206, U206A, TU206A, U206B/TU206B, U206C/TU206C, U206D/TU206D, U206E/TU206E, U206F/TU206F, U206G/TU206G, P206, P206A, TP206A, P206B/TP206B, P206C/TP206C, P206D/TP206D and P206E/TP206E\n\nseries aircraft.\n\nRequirement: 1. Inspect aircraft fuel strainer assembly. If P/N 0756005-2 top assembly, P/N 0756005-8 or 0756005-9 fuel strainer assembly were shipped from Cessna between December 12, 1996 and September 5, 1997, and fitted to the aircraft, measure the standby pipe in the fuel strainer assembly for a visible maximum length not exceeding 1.68 inches, in accordance with the Accomplishment Instructions of Cessna Single Engine Service Bulletin SEB97-9 dated November 17,1997.\n\nThe holder of a pilot licence, other than a student pilot, valid for the aircraft type, may review the aircraft records to determine if parts listed in this Directive have been fitted to the aircraft. If this review concludes that parts listed in this Directive have not been fitted then a certification stating that “This Directive does not apply as no parts listed in the Cessna SEB97-9 have been fitted to this aircraft.” may be entered in the aircraft records.\n\n2. Replace the filter strainer top assembly if the standpipe tube exceeds the specified measurement.\n\nNote: FAA AD 2000-06-01 Amendment 39-11641 refers.\n\nCompliance: 1. Unless previously accomplished, within 12 calendar months time in service from the effective date of this Directive.\n\n2. Prior to further flight.\n\nThis Airworthiness Directive becomes effective on 13 July 2000.","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"},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This is a standard single-issue Airworthiness Directive addressing a specific unsafe condition in a defined aircraft type. The scope remains tightly focused on the fuel strainer defect identified in the referenced Cessna Service Bulletin. No scope creep is evident."},"complexity_factors":["Multiple specific part numbers referenced (P/N 0756005-2, 0756005-8, 0756005-9) requiring cross-checking against aircraft records","Precise date range for affected parts (December 12, 1996 to September 5, 1997) creates conditional applicability","Specific measurement requirement (1.68 inches maximum) with reference to external technical document (Cessna Service Bulletin SEB97-9)","Two-tier compliance structure: 12-month window for inspection, but immediate \"prior to further flight\" requirement if replacement needed","Delegated authority provision allowing licensed pilots (non-student) to certify non-applicability without mechanic involvement","Cross-reference to US FAA AD 2000-06-01 indicating harmonisation with international safety regulation"],"plain_english_summary":"This CASA safety order requires owners/operators of certain Cessna U206/TU206/P206/TP206 models to inspect fuel strainer assemblies for parts shipped by Cessna between 12 Dec 1996 and 5 Sep 1997. If present, mechanics must measure the internal standby pipe and replace it before flight if it exceeds 1.68 inches.\n\nIt affects registered owners/operators (licensed pilots except students may verify records). It addresses a fuel‑system manufacturing defect that could cause in‑flight engine failure; immediate repair is mandatory if the defect is found."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"This AD is narrowly targeted to a specific unsafe condition: certain fuel strainer assemblies (identified by part number and shipment dates) installed on specified Cessna 206 variants. The instrument does not broaden the subject beyond that original safety purpose; it prescribes a specific inspection and replacement remedy and relies on the Cessna service bulletin for technical steps. There is no substantive expansion of scope beyond correcting the identified part defect."},"complexity_factors":["Short, single‑issue instrument (inspection + replacement)","Clear applicability list of specific Cessna 206 model variants","Two discrete compliance actions with two deadlines (inspection within 12 months; replacement before further flight)","Specific part numbers and a narrow date window for shipped parts (P/N 0756005-2 top assembly, P/N 0756005-8/9; shipped between 12 Dec 1996 and 5 Sep 1997)","A single numeric measurement threshold (standpipe visible maximum length ≤ 1.68 inches)","Reference to external technical material (Cessna SEB97-9) and to FAA AD (cross‑references increase implementation complexity)","Allowance for record‑review and logbook certification by a non‑student pilot (adds a procedural path to avoid inspection)"],"plain_english_summary":"**What this instrument does (mechanically)**\n\n- It orders owners/operators of certain Cessna 206 series aircraft to inspect the aircraft fuel strainer top assembly for a specific part-numbered assembly that may have an incorrect standpipe (standby pipe) length, and to replace the assembly if the standpipe is too long. (Applicability; Requirement 1–2.)\n\n- The inspection must be done in accordance with the instructions in Cessna Single Engine Service Bulletin SEB97-9. If the standpipe measures more than 1.68 inches (visible maximum length), the top assembly must be replaced before the aircraft next flies. (Requirement 1–2; Compliance.)\n\n- Owners/operators may have a suitably rated pilot (holder of a non‑student pilot licence for the aircraft type) check the aircraft records to see whether the suspect parts were fitted; if the records show the parts were not fitted, an entry may be made in the aircraft log stating the AD does not apply. (Requirement 1.)\n\n- Timing: the inspection must be completed within 12 calendar months from the AD’s effective date unless already done; any required replacement must be done prior to further flight. (Compliance 1–2.)\n\n**Who this affects**\n\n- Owners, operators and maintenance organisations responsible for the listed Cessna 206 variants (a specific list of U206/P206/TP206 variants is given in the Applicability section).\n\n- Maintenance personnel who must perform the inspection and replacement following the Cessna service bulletin.\n\n- A pilot (not a student) can be authorised to review records and enter a certification in the aircraft log if the suspect parts were not fitted.\n\n**Why it matters (official rationale and practical implications)**\n\n- Official purpose: the Directive is issued to correct an identified unsafe condition — a fuel strainer assembly that may have a standpipe of incorrect length. The AD implements the mitigation (inspection and replacement) that CASA considers necessary. (Background; Requirement.)\n\n- Practical safety mechanism: it reduces the risk that a faulty standpipe in the fuel strainer could cause fuel flow problems by removing or replacing assemblies that exceed the specified length (1.68 in.). (Requirement 1–2.)\n\n**Costs, incentives and trade-offs**\n\n- Who pays: owners/operators bear the direct costs — labour to inspect, any parts and replacement costs, and aircraft downtime while maintenance is performed. (Requirement; Compliance.)\n\n- Who decides on compliance: CASA (via the delegate) mandates the AD; maintenance personnel must follow the Cessna service bulletin; a licensed pilot may review records and sign the log if parts were not fitted. (Applicability; Requirement 1.)\n\n- Compliance burden and timing: inspection can be deferred up to 12 months, which spreads the immediate workload/costs, but required replacement is mandatory prior to further flight if the part fails the measurement. This creates an incentive to review records first (to avoid unnecessary inspections) and to schedule replacement promptly if required. (Requirement 1; Compliance.)\n\n- Cross‑jurisdictional reliance: the AD cites and follows an FAA AD and Cessna service bulletin (external documents). Operators must follow those instructions for the technical measurement and corrective action, so compliance requires access to and reliance on those external documents. (Note; Requirement.)\n\n- Concentration of impact: the directive affects a specific subset of aircraft and part numbers (assemblies shipped by Cessna between specified dates). The cost burden is therefore concentrated on owners/operators of those models; the safety benefit accrues to operators and passengers of those aircraft and to airworthiness oversight generally. (Applicability; Requirement.)\n\n**Implementation risks and practical notes**\n\n- Implementation requires accurate record checks (to determine if suspect parts were fitted), correct measurement to the 1.68 in. threshold per the Cessna service bulletin, and replacement parts availability. If records are incomplete or replacement parts are scarce, operators may face additional downtime and cost.\n\n- The AD sets a firm operational limit: if the standpipe exceeds the measurement, the aircraft must not fly until the top assembly is replaced, creating immediate operational interruption for affected aircraft. (Requirement 2; Compliance 2.)\n\n**Section pointers**\n\n- Applicability: lists affected Cessna 206 variants.\n- Requirement 1–2: inspection measurement requirement, record‑review allowance, and mandatory replacement if measurement exceeded.\n- Compliance 1–2: inspection deadline (12 months) and replacement before further flight.\n\n"}},"importantCases":[],"_links":{"self":"/api/acts/ad-cessna-206-52-fuel-strainer","history":"/api/acts/ad-cessna-206-52-fuel-strainer/history","analysis":"/api/acts/ad-cessna-206-52-fuel-strainer/analysis","conflicts":"/api/acts/ad-cessna-206-52-fuel-strainer/conflicts","importantCases":"/api/acts/ad-cessna-206-52-fuel-strainer/important-cases","documents":"/api/acts/ad-cessna-206-52-fuel-strainer/documents"}}