{"id":"F2006B07127","name":"AD/S-PUMA/50 - Engine Electronic Control Unit","slug":"ad-s-puma-50-engine-electronic-control-unit","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":48944,"registerId":"commonwealth-F2006B07127-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\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 CASR 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\n![](image.001.png)  \n\nEurocopter AS 332 (Super Puma) Series Helicopters","sortOrder":0},{"sectionNumber":"AD/S-PUMA/50 Engine Electronic Control U","sectionType":"part","heading":"AD/S-PUMA/50 Engine Electronic Control Unit 1/2004","content":"# AD/S-PUMA/50 Engine Electronic Control Unit 1/2004\n\nDM\n\nApplicability: AS 332 helicopters, versions C, C1, L and L1, equipped with Turbomeca Makila 1A or 1A1 engines with electronic control units (ECU) post TU 219 or TU 190 or\n\nTU 202.\n\nRequirement: 1. Ensure that the “POWER” indicator light check procedures, specified in paragraph 2.B.1 of Eurocopter Alert Telex 05.00.59 R2, are in the Aircraft Flight Manual (AFM).\n\n    2. Perform the “POWER” indicator light check procedures specified in paragraph\n\n2.B.1 of Alert Telex 05.00.59 R2.\n\n    3. If the “POWER” indicator light fails either the pre flight or a Requirement 2 check procedure, check and adjust the anticipator potentiometer in accordance with the instructions in paragraph 2.B.2 of the Alert Telex.\n\n    4. If the anticipator potentiometer has not been checked and adjusted in accordance with Requirement 3, check and adjust the anticipator potentiometer in accordance with the instructions in paragraph 2.B.2 of the Alert Telex.\n\nNote: DGAC AD F-2003-414 refers.\n\nCompliance: For Requirement 1 \\- Before the next flight after the effective date of this Directive.\n\nFor Requirement 2 \\-\n\n    On replacement of an ECU pre-MOD TU 190 or TU 202 or TU 219 with an ECU post-MOD TU 190 or TU 202 or TU 219,\n\n    b. Each time the anticipator potentiometer is replaced,\n\n    c. Each time the AP hydraulic unit is replaced, and\n\n    d. Each time the linkage between the AP hydraulic unit and the anticipator potentiometer is adjusted.","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"},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This AD maintains its original narrow scope — addressing a specific unsafe condition in a particular helicopter type's engine control system. The applicability is tightly constrained to specific AS 332 variants with specific engine configurations."},"complexity_factors":["Multiple specific technical references to manufacturer documents (Eurocopter Alert Telex 05.00.59 R2) without reproducing those instructions in the AD itself","Conditional compliance triggers based on four different maintenance events (ECU replacement, potentiometer replacement, hydraulic unit replacement, linkage adjustment)","Nested technical terminology requiring knowledge of specific helicopter systems (anticipator potentiometer, AP hydraulic unit, MOD TU numbers)","Cross-reference to French aviation authority directive (DGAC AD F-2003-414) indicating international regulatory coordination","Four distinct requirements with different compliance timelines (immediate for manual update, event-triggered for checks)"],"plain_english_summary":"This mandatory CASA Airworthiness Directive targets Eurocopter AS332 Super Puma helicopters with Turbomeca Makila engines and certain ECU modifications. It requires updating the flight manual, performing checks of the POWER indicator light after specified ECU, potentiometer or autopilot hydraulic work or linkage adjustments, and correcting any faults by adjusting the anticipator potentiometer per manufacturer instructions.\n\nIt affects operators and maintainers of the affected helicopters and is required to prevent misleading engine power indications that could compromise flight safety."},"flash_summary":{"complexity_score":6,"scope_assessment":{"changed":false,"description":"The Directive applies to AS332 C/C1/L/L1 helicopters with Makila 1A/1A1 engines and ECUs identified by post‑MOD TU190/TU202/TU219. It imposes AFM insertion, inspection and adjustment requirements per the Alert Telex but does not extend applicability to other aircraft types or add requirements beyond the referenced procedural checks and corrective actions."},"complexity_factors":["Technical specificity of affected components (ECU versions post‑MOD TU190/TU202/TU219; anticipator potentiometer; AP hydraulic unit)","Multiple conditional triggers for action (pre‑flight failures, ECU replacement, anticipator replacement, AP hydraulic unit replacement, linkage adjustment)","Cross‑reference to external documents (Eurocopter Alert Telex 05.00.59 R2 and DGAC AD F‑2003‑414) for procedural detail","Requirement to amend the Aircraft Flight Manual (administrative and compliance burden for operators)","Varied compliance timing (before next flight for AFM insertion; event‑based checks for other actions) increasing scheduling complexity","Operational and maintenance actions fall to operators/maintenance organisations, creating potential parts/labour costs","Potential ambiguity for operators in identifying ECU ‘post‑MOD’ status and locating the correct Alert Telex paragraphs"],"plain_english_summary":"This Airworthiness Directive requires operators of Eurocopter AS332 Super Puma helicopters fitted with Turbomeca Makila 1A/1A1 engines and specified electronic control units to add a POWER‑indicator check to the Aircraft Flight Manual and to perform that check at pre‑flight and at certain maintenance events. If the POWER indicator fails, or when certain components are replaced or adjusted, the anticipator potentiometer must be checked and adjusted following the manufacturer’s Alert Telex. Costs for inspections, adjustments and any replacements are borne by the aircraft owner/operator; CASA (the delegate) sets and enforces the compliance times."}},"importantCases":[],"_links":{"self":"/api/acts/ad-s-puma-50-engine-electronic-control-unit","history":"/api/acts/ad-s-puma-50-engine-electronic-control-unit/history","analysis":"/api/acts/ad-s-puma-50-engine-electronic-control-unit/analysis","conflicts":"/api/acts/ad-s-puma-50-engine-electronic-control-unit/conflicts","importantCases":"/api/acts/ad-s-puma-50-engine-electronic-control-unit/important-cases","documents":"/api/acts/ad-s-puma-50-engine-electronic-control-unit/documents"}}