{"id":"F2006B11264","name":"AD/MAKILA/3 - Electronic Control Unit","slug":"ad-makila-3-electronic-control-unit","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":57052,"registerId":"commonwealth-F2006B11264-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/MAKILA/3 Electronic Control Unit 4/20","sectionType":"part","heading":"AD/MAKILA/3 Electronic Control Unit 4/2000","content":"# AD/MAKILA/3 Electronic Control Unit 4/2000\n\nApplicability: Makila 1A and 1A1 engines installed on AS 332 “Super Puma” C, C1, L and L1 helicopters.\n\nRequirement: Modify the engine electronic control unit by incorporating Turbomeca Modification TU 203 in accordance with Turbomeca Service Bulletin No 298 73 0146 dated 13\n\nJanuary 2000.\n\nDGAC AD 2000-067(A) refers.\n\nCompliance: Before 31 December 2001.\n\nThis Airworthiness Directive becomes effective on 20 April 2000.\n\nBackground: The French Direction Generale de L’Aviation Civile has advised that investigation of an AS 332 incident has revealed that the existing failure detection laws may not prevent the power turbine from overspeeding with the possibility of catastrophic failure. This Directive introduces a modification to the electronic control unit designed to correct this deficiency.\n\n![Signature of Bernard Malcolm Hole Delegate of the Civil Aviation Safety Authority](image.003.png)  \n\nBernard Malcolm Hole\n\nDelegate of the Civil Aviation Safety Authority 8 March 2000\n\n![](image.002.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 22 March 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":2,"scope_assessment":{"changed":false,"description":"This AD maintains its original narrow scope — a targeted safety fix for a specific engine control issue on specific helicopter models. There is no evidence of scope creep; it addresses exactly the unsafe condition identified in the background without expanding to unrelated systems or aircraft types."},"complexity_factors":["Single, clearly defined applicability (two specific engine models on four specific helicopter variants)","One straightforward requirement referencing an external technical standard (manufacturer's service bulletin)","Simple compliance deadline (calendar date, no flight hours or cycles)","No defined terms section, no cross-references to other legislation beyond the enabling regulation (CAR 1998 subreg 39.1(1))","Background provides clear safety rationale without legal conditionality","Total length: approximately 200 words of substantive text"],"plain_english_summary":"This mandatory CASA Airworthiness Directive requires owners/operators of AS 332 Super Puma (C, C1, L, L1) helicopters with Turbomeca Makila 1A/1A1 engines to install Turbomeca Modification TU 203 (per Service Bulletin 298 73 0146). The upgrade fixes engine‑control software that could miss faults and allow a catastrophic power‑turbine overspeed. Compliance is legally required by 31 December 2001."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive implements a targeted technical modification to correct a specific failure‑detection deficiency for Makila 1A/1A1 engines on AS 332 helicopters. It does not broaden applicability or add unrelated obligations; it prescribes a single manufacturer modification by a specified date and cites the related DGAC AD."},"complexity_factors":["Narrow applicability to Makila 1A and 1A1 engines on AS 332 variants (Applicability).","Single mandated technical action — fit Turbomeca Modification TU 203 per a specified Service Bulletin (Requirement).","Firm compliance deadline with a clear effective date (Compliance; ‘becomes effective on 20 April 2000’ and ‘Before 31 December 2001’).","Dependence on external manufacturer documentation and modification instructions increases operational/technical execution needs (Requirement references Turbomeca Service Bulletin No 298 73 0146).","Regulatory cross‑reference to French DGAC AD (DGAC AD 2000-067(A) refers) — introduces reliance on foreign authority for root cause and remedy.","Compliance cost and scheduling burden falls on operators/owners (implied by mandatory modification and compliance timing).","Low administrative discretion — CASA delegate prescribes the action under CAR 1998 subregulation 39.1(1) (opening paragraph)."],"plain_english_summary":"**What it does:** Requires operators of AS 332 “Super Puma” helicopters fitted with Makila 1A or 1A1 engines to install a Turbomeca electronic control unit modification (TU 203) per Turbomeca Service Bulletin No 298 73 0146. **Who it affects and why it matters:** Aircraft owners/operators must arrange and fund the modification by 31 December 2001 to address a failure‑detection deficiency that can permit power‑turbine overspeed and possible catastrophic failure."}},"importantCases":[],"_links":{"self":"/api/acts/ad-makila-3-electronic-control-unit","history":"/api/acts/ad-makila-3-electronic-control-unit/history","analysis":"/api/acts/ad-makila-3-electronic-control-unit/analysis","conflicts":"/api/acts/ad-makila-3-electronic-control-unit/conflicts","importantCases":"/api/acts/ad-makila-3-electronic-control-unit/important-cases","documents":"/api/acts/ad-makila-3-electronic-control-unit/documents"}}