{"id":"F2012L00080","name":"AD/CON/60 Amdt 4 - Fuel Injection Supply Lines","slug":"ad-con-60-amdt-4-fuel-injection-supply-lines","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":142278,"registerId":"commonwealth-F2012L00080-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Teledyne Continental Motors Piston Engin","sectionType":"division","heading":"Teledyne Continental Motors Piston Engines","content":"### Teledyne Continental Motors Piston Engines\n\n| AD/CON/60 Amdt 4 | Fuel Injection Supply Lines | 2/2012 |\n| ---------------- | --------------------------- | ------ |\n\n| Applicability: | All Teledyne Continental Motors (TCM) fuel injected horizontally opposed piston engines. |\n| -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |\n| Requirement: | 1. Inspect all fuel nozzle supply lines between the fuel injector manifold and the fuel injector nozzles for evidence of cracking, corrosion, pitting, physical damage and stains caused by fuel leakage.2. Replace any fuel nozzle supply line with evidence of cracking, corrosion, pitting, physical damage or stains caused by fuel leakage.3. Inspect all fuel nozzle supply lines between the fuel injector manifold and the fuel injector nozzles for fitment and integrity of fuel line support clamps, in accordance with the engine manufacturer's published data.4. Fit or replace as necessary, fuel nozzle supply line support clamps not in accordance with the engine manufacturer's published data.Note: This Directive extends the applicability of FAA Airworthiness Directive (AD) 2011-26-04 Amendment 39-16894, or latest FAA approved revision (applicable to Lycoming Engines) to include all Teledyne Continental fuel injected horizontally opposed piston engines, and supersedes the requirements of Airworthiness Directive AD/CON/26. |\n| Compliance: | Requirement 1 & 3: At the next scheduled maintenance after the effective date of this AD and thereafter, at intervals not exceeding 110 hours time in service.Requirement 2 & 4: Before further flight, following the inspections in accordance with Requirement 1 & 3 of this Directive. |\n| | This Amendment becomes effective on 30 January 2012. |\n| Background: | This Directive has been issued, not to reflect a design error or a material fault, but to address inadequate maintenance. The FAA has reports of fatal accidents attributable to fuel injector supply line failure because of the inadequate maintenance. |\n\n| | A review of Australian Service Difficulty Reports (SDRs) has revealed many reports of fuel nozzle supply line defects. The majority of these reports advise of fuel leaks. In each report, there was evidence of inadequate maintenance. |\n| --- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| | This AD requires inspection and replacement as necessary of the fuel nozzle supply lines and their support clamps to preclude a fuel nozzle supply line failure, which may result in an engine failure or an engine fire event.Amendment 4 of the AD corrects a typographical error noted in Amendment 3 and removes a reference to CAO 106 as it is no longer applicable, with no change in the AD Requirements or Compliance schedules.Amendment 3 of the AD referred to FAA 2011-26-04 Amendment 39-16894, or latest FAA approved revision.Amendment 2 of the AD corrected a typographical error noted in the Amendment 1 with no change in the AD Requirements or Compliance schedules.Amendment 1 of the AD required additional visual inspection for the presence of pitting and corrosion in the fuel nozzle supply lines which was determined by ATSB to be the causal factor behind failure of one of the fuel lines. (ATSB Report reference BO/200601291).Amendment 1 of this AD became effective on 31 August 2006.The original issue of this AD became effective on 17 September 1992. |\n\n![](image.001.png)\n\nMike Higgins \nDelegate of the Civil Aviation Safety Authority\n\n24 January 2012","sortOrder":0},{"sectionNumber":"AD/CON/60 Amdt 4","sectionType":"part","heading":"AD/CON/60 Amdt 4","content":"## AD/CON/60 Amdt 4","sortOrder":1},{"sectionNumber":"Fuel Injection Supply Lines","sectionType":"part","heading":"Fuel Injection Supply Lines","content":"## Fuel Injection Supply Lines","sortOrder":2},{"sectionNumber":"2/2012","sectionType":"part","heading":"2/2012","content":"## 2/2012","sortOrder":3}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This amendment makes no substantive changes to scope. It corrects a typographical error and removes a reference to CAO 106 (Civil Aviation Order 106) which is no longer applicable. The applicability remains limited to TCM fuel-injected horizontally opposed piston engines, and the safety requirements are unchanged from previous amendments. The document explicitly states 'no change in the AD Requirements or Compliance schedules.'"},"complexity_factors":["Very short document (approximately 400 words of substantive content)","Only 4 numbered requirements with clear, sequential logic","Minimal defined terms (only standard aviation terminology like 'time in service')","No cross-references to other legislation beyond a single note about FAA directive and obsolete CAO 106 reference","Simple conditional structure: inspect → if problem found → replace before flight","Straightforward compliance schedule with only two timeframes (next maintenance/110 hours vs before further flight)","Background section provides clear rationale without legal obfuscation"],"plain_english_summary":"This Airworthiness Directive requires operators and maintenance personnel of aircraft with Teledyne Continental Motors fuel‑injected piston engines to inspect and, if necessary, replace fuel injection supply lines and their clamps to stop leaks. \n\nInspections must start at the next scheduled maintenance (post‑30 Jan 2012) and repeat every 110 flight hours; any damaged parts must be replaced before flight. The AD addresses fatal accidents and fires caused by corroded or poorly maintained lines."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"The Directive extends the applicability of FAA AD 2011-26-04 to include all Teledyne Continental fuel‑injected horizontally opposed piston engines, thereby broadening the population of engines subject to these inspection and replacement requirements; it also supersedes AD/CON/26. Later amendments corrected typographical references and removed an inapplicable CAO reference without changing the substantive requirements (Note; Background)."},"complexity_factors":["Clear, narrow technical focus: mandates inspection and replacement of fuel nozzle supply lines and support clamps (Requirement 1–4).","Recurring inspection schedule: inspections at next scheduled maintenance and thereafter at intervals not exceeding 110 hours time in service (Requirement 1 & 3: Compliance).","Immediate action trigger: any line/clamp showing defects must be replaced before further flight, creating an operational grounding condition until rectified (Requirement 2 & 4: Compliance).","Standards reference and potential interpretive discretion: fitment and integrity checks must follow the engine manufacturer's published data, which requires operators to consult external technical material to determine compliance (Requirement 3 & 4).","Vague failure criteria that create judgement calls: terms like 'evidence of cracking, corrosion, pitting, physical damage and stains caused by fuel leakage' are fact-specific and may lead to differing maintenance judgements (Requirement 1 & 2).","Cross-jurisdictional linkage: the Directive extends applicability of FAA Airworthiness Directive 2011-26-04 to TCM engines and references FAA material as a normative source, creating reliance on external regulatory texts (Note).","Operational and cost burden is concentrated on aircraft owners/operators and maintenance providers who must perform frequent inspections and replace parts as necessary; costs include labour, parts and potential aircraft downtime (Requirements & Compliance).","Amendment history and documentation updates: multiple amendments and a corrective typographical change are recorded; administrative changes may affect record-keeping but do not change substance (Background)."],"plain_english_summary":"This directive requires operators and maintenance organisations of Teledyne Continental Motors (TCM) fuel‑injected horizontally opposed piston engines to inspect fuel injector supply lines and their support clamps for cracking, corrosion, pitting, damage or fuel stains, and to replace any defective lines or clamps. Inspections must occur at the next scheduled maintenance and then at intervals not exceeding 110 hours; defective parts must be replaced before further flight. The measure is intended to address reports of leaks and unsafe maintenance practices."},"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"}},"importantCases":[],"_links":{"self":"/api/acts/ad-con-60-amdt-4-fuel-injection-supply-lines","history":"/api/acts/ad-con-60-amdt-4-fuel-injection-supply-lines/history","analysis":"/api/acts/ad-con-60-amdt-4-fuel-injection-supply-lines/analysis","conflicts":"/api/acts/ad-con-60-amdt-4-fuel-injection-supply-lines/conflicts","importantCases":"/api/acts/ad-con-60-amdt-4-fuel-injection-supply-lines/important-cases","documents":"/api/acts/ad-con-60-amdt-4-fuel-injection-supply-lines/documents"}}