{"id":"F2006B08522","name":"AD/CFM56/18 - Engine Starter","slug":"ad-cfm56-18-engine-starter","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":51267,"registerId":"commonwealth-F2006B08522-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.001.png)\n\n![](image.001.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.\n\nCFM International Turbine Engines – CFM 56 Series","sortOrder":0},{"sectionNumber":"AD/CFM 56/18 Engine Starter 8/2001","sectionType":"part","heading":"AD/CFM 56/18 Engine Starter 8/2001","content":"# AD/CFM 56/18 Engine Starter 8/2001\n\nApplicability: CFM International (CFMI) CFM56-5, CFM56-5B, CFM56-5C series engines. Requirement: Replace the engine starter magnetic plug according to accomplishment instructions of\n\nCFMI Service Bulletin (SB) CFM56-5 80-014, Revision 2, dated 17 November 2000\n\nor SB CFM56-5B 80-006, Revision 2, dated 21 November 2000 or SB CFM56-5C\n\n80-009 Revision 2 dated 21 November 2000, as applicable.\n\nNote 1: DGAC AD 2001–177(B) refers.\n\nNote 2: Compliance with earlier versions of the SBs satisfy the intent of this Directive.\n\nCompliance: Unless already accomplished, no later than the second ‘A’ check or within 6 months from the date of this Directive, whichever occurs first.\n\nThis Airworthiness Directive becomes effective on 9 August 2001.\n\nBackground: This Directive is prompted by failure of the starters due to the overtorque of the magnetic plug. The overtorque results in failure of the magnetic plug which permits the oil to drain from the starter housing. This results in substantial damage to the starter and may lead to engine and/or fan cowl damage. Replacement of the magnetic plug assembly along with proper torque should reduce the potential for oil loss from the engine starter.\n\n![Signature of Eugene Paul Holzapfel Delegate of the Civil Aviation Safety Authority](image.002.png)  \n\nEugene Paul Holzapfel\n\nDelegate of the Civil Aviation Safety Authority 2 July 2001\n\n![](image.001.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 11 July 2001.","sortOrder":1}],"analysis":{"flash_summary_failed":{"failed":true,"reason":"Unauthenticated. Configure AI_GATEWAY_API_KEY or use a provider module. Learn more: https://ai-sdk.dev/unauthenticated-ai-gateway","source":"analysis-cron"},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The AD confines remedial action to starter magnetic plugs on the listed CFM56‑5 series engines and requires replacement per CFMI SBs within the stated compliance window to address overtorque‑related oil loss. It implements the stated corrective purpose without expanding or narrowing the listed applicability or required remedy beyond that purpose."},"complexity_factors":["Narrow applicability limited to specific engine models (CFM56‑5, ‑5B, ‑5C) — reduces scope and complexity.","Mandates actions 'according to accomplishment instructions' in external CFMI Service Bulletins (SBs) — depends on availability and clarity of those documents.","Accepts compliance with earlier SB revisions — introduces flexibility in acceptable methods.","Requires mechanical replacement plus correct torqueing of magnetic plug — needs qualified maintenance personnel, correct parts and tooling.","Compliance timing tied to operational maintenance schedule (second 'A' check) or a six‑month deadline — creates scheduling and resource demands for operators.","Issued by CASA delegate under subregulation 39.1(1) of CAR 1998 and references DGAC AD — links to regulator authority and an overseas airworthiness directive."],"plain_english_summary":"Requires replacement of the engine starter magnetic plug on CFM International CFM56‑5, ‑5B and ‑5C series engines, carried out in accordance with CFMI service bulletins. Aircraft operators and maintenance organisations must obtain the part and perform the work. The stated purpose is to prevent starter oil loss and consequent starter, engine or fan‑cowl damage caused by magnetic‑plug overtorque. Compliance is required by the second ‘A’ check or within six months, whichever occurs first (Requirement; Compliance)."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This AD maintains its original narrow scope: addressing a specific mechanical defect in a defined engine family. It has not expanded beyond the original safety purpose of preventing starter failures due to magnetic plug overtightening."},"complexity_factors":["Single, specific mechanical action required (replace one component)","Only 3 defined applicability criteria (engine model series)","Clear cross-reference to external technical documents (Service Bulletins) rather than reproducing lengthy procedures","Simple compliance deadline structure (time-based OR event-based, whichever first)","Minimal conditional logic — essentially 'if you have this engine, do this action'","No nested exceptions or elaborate definitions section"],"plain_english_summary":"This AD mandates that operators of CFM56-5, -5B and -5C engines replace the engine starter magnetic plug and secure it to the correct torque per the manufacturer’s service instructions. It addresses over‑torqued plugs that can leak oil, damage starters or cowling, and raise fire/mechanical-failure risk. Compliance is required by the second A‑check or within six months, and earlier compliance with the referenced service instructions satisfies the AD."}},"importantCases":[],"_links":{"self":"/api/acts/ad-cfm56-18-engine-starter","history":"/api/acts/ad-cfm56-18-engine-starter/history","analysis":"/api/acts/ad-cfm56-18-engine-starter/analysis","conflicts":"/api/acts/ad-cfm56-18-engine-starter/conflicts","importantCases":"/api/acts/ad-cfm56-18-engine-starter/important-cases","documents":"/api/acts/ad-cfm56-18-engine-starter/documents"}}