{"id":"F2006B11085","name":"AD/LANCAIR/2 - Fuel Tanks","slug":"ad-lancair-2-fuel-tanks","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":56744,"registerId":"commonwealth-F2006B11085-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/LANCAIR/2 - Fuel Tanks","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nLancair Series Aeroplanes\n\nAD/LANCAIR/2 Fuel Tanks 2/95 DM\n\nApplicability: Aircraft assembled from Avtex manufactured assembly kits. Requirement: 1. Open all fuel tanks and inspect for:\n\n    sealant contamination/deterioration;\n\n    b. excessive sealant, and/or sloshing compound or any other contaminants in the fuel tank;\n\n    c. fuel strainer contamination.\n\n2. In conjunction with a person authorised pursuant to CAR 35, inspect the closure panels and the attaching structure and hardware to ensure suitability for the purpose; modify as necessary, and/or reseal, in accordance with a scheme acceptable to the Authority. Flow test fuel system.\n\nNote: Notwithstanding any Airworthiness Authority issued to a builder, this inspection is to be carried out and certified by a LAME licensed in the appropriate categories; i.e. Airframe Groups 1 & 7.\n\nCompliance: Prior to further flight after 7 December 1994 or prior to the issue of a Certificate of Airworthiness whichever occurs first.\n\nBackground: Reports have been received of deteriorating sealant and contaminated fuel tanks and strainers. It has also been reported that the tank access panel, retention system and substructure may not comply with the build standard approved for this aircraft by the Authority.","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted Airworthiness Directive addressing a specific safety defect in a specific aircraft type. It has not expanded beyond its original purpose of ensuring fuel tank integrity in Avtex-built Lancair kits."},"complexity_factors":["Single, discrete safety issue addressed (fuel tank integrity)","Only 2 main requirements with 3 sub-points in the first requirement","No defined terms section — uses standard aviation terminology","No cross-references to other legislation beyond CAR 35 (authorisation of persons) and generic reference to 'the Authority'","Straightforward compliance deadline with simple 'whichever occurs first' logic","Background section provides clear rationale without legal caveats"],"plain_english_summary":"This CASA Airworthiness Directive applies to Lancair aeroplanes built from Avtex kits: it mandates a licensed aircraft maintenance engineer (LAME, Airframe Groups 1 & 7) inspect fuel tanks and access panels, correct contamination or sealant defects using approved methods, and flow-test the system, with sign-off before next flight after 7 Dec 1994 or prior to issuing a Certificate of Airworthiness. It responds to reports of sealant deterioration and contamination that could cause engine stoppage or fire."},"flash_summary":{"complexity_score":4,"scope_assessment":{"changed":false,"description":"The Directive's scope is consistent with its stated purpose in the text: it targets Lancair aircraft built from Avtex kits to address reported sealant deterioration, contamination and potentially non‑compliant access panels (Background; Applicability). It prescribes inspection, corrective work subject to Authority approval, and LAME certification (Requirement; Note), without indicating an expansion beyond that original target."},"complexity_factors":["Technical scope: Requires internal fuel tank inspections for sealant contamination/deterioration, excess sealant/sloshing compound, and fuel strainer contamination (Requirement 1).","Repair standard and approval: Mandates modification and/or resealing 'in accordance with a scheme acceptable to the Authority', introducing regulatory discretion over acceptable repairs (Requirement 2).","Certification constraint: Inspection must be carried out and certified by a LAME licensed in Airframe Groups 1 & 7, narrowing qualified personnel (Note).","Coordination requirement: Inspections of closure panels/attaching structure must be done 'in conjunction with a person authorised pursuant to CAR 35', adding a second-authority approval step (Requirement 2).","Operational impact: Compliance is required prior to further flight after 7 December 1994 or before issue of a Certificate of Airworthiness, effectively grounding affected aircraft until completed (Compliance).","Targeted applicability: Applies only to aircraft assembled from Avtex manufactured assembly kits, so the rule is narrow in population but concentrated in effect (Applicability).","Implementation burden: Owners/operators must arrange and (implicitly) fund inspections, any required modifications, and the LAME/authorised-person engagement (Requirement; Note; Compliance)."],"plain_english_summary":"This Airworthiness Directive requires owners/operators of Lancair series aeroplanes assembled from Avtex kits to open and inspect fuel tanks and strainers for sealant deterioration or contamination, check and, if needed, modify or reseal tank access panels and structure, and flow‑test the fuel system. Inspections and certification must be performed by a LAME with Airframe Groups 1 & 7 and any corrective scheme must be acceptable to the Civil Aviation Safety Authority. Compliance is required before next flight or before issuing a Certificate of Airworthiness."}},"importantCases":[],"_links":{"self":"/api/acts/ad-lancair-2-fuel-tanks","history":"/api/acts/ad-lancair-2-fuel-tanks/history","analysis":"/api/acts/ad-lancair-2-fuel-tanks/analysis","conflicts":"/api/acts/ad-lancair-2-fuel-tanks/conflicts","importantCases":"/api/acts/ad-lancair-2-fuel-tanks/important-cases","documents":"/api/acts/ad-lancair-2-fuel-tanks/documents"}}