{"id":"F2005L02879","name":"AD/BR700/7 - Engine Electronic Controller (EEC)","slug":"ad-br700-7-engine-electronic-controller-eec","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":37966,"registerId":"commonwealth-F2005L02879-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Rolls Royce Germany Turbine Engines - BR","sectionType":"division","heading":"Rolls Royce Germany Turbine Engines - BR700 Series","content":"### Rolls Royce Germany Turbine Engines - BR700 Series\n\n| AD/BR700/7 | Engine Electronic Controller (EEC) | 12/2005 TX |\n| ---------- | ---------------------------------- | ---------- |\n\n| Applicability: | BR700-715A1-30, BR700-715B1-30 and BR700-715C1-30 Engines which have an Engine Electronic Controller (EEC) with the part number 114E6112G120 and the serial numbers LHBR04I3 to LHBR0419 installed.                                                                                                                                                                 |\n| -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | 1. If both engines on an aircraft have an affected EEC installed.2. If only one of the two engines on an aircraft has an affected EEC installed, the affected EEC must be replaced.Carry out the replacement of the EEC in accordance with Rolls-Royce Deutschland Alert Service Bulletin BR700-73-A900378, dated 16 September 2005.Note: LBA AD D-2005-359 refers. |\n| Compliance:    | 1. One of the two affected EEC’s must be replaced before further flight. The other affected EEC must be replaced within the next 50 flight hours after the effective date of this Directive.2. Within the next 50 flight hours after the effective date of this Directive.                                                                                          |\n|                | This Airworthiness Directive becomes effective on 26 September 2005.                                                                                                                                                                                                                                                                                                |\n| Background:    | This airworthiness directive requires the replacement of certain Engine Electronic Controllers that have been found to have thread locking compound applied incorrectly. This could lead to hardware coming loose within the EEC and causing a short circuit and subsequent failure of the EEC.                                                                     |\n\n![](image.001.png)  \nJames Coyne  \nDelegate of the Civil Aviation Safety Authority\n\n22 September 2005","sortOrder":0},{"sectionNumber":"AD/BR700/7","sectionType":"part","heading":"AD/BR700/7","content":"## AD/BR700/7","sortOrder":1},{"sectionNumber":"Engine Electronic Controller (EEC)","sectionType":"part","heading":"Engine Electronic Controller (EEC)","content":"## Engine Electronic Controller (EEC)","sortOrder":2},{"sectionNumber":"12/2005 TX","sectionType":"part","heading":"12/2005 TX","content":"## 12/2005 TX","sortOrder":3}],"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":2,"scope_assessment":{"changed":false,"description":"This is a standard, narrow Airworthiness Directive addressing a specific manufacturing defect in a specific component batch. It has not expanded beyond its original safety purpose."},"complexity_factors":["Single, specific technical issue with narrow applicability (three engine models, one part number, specific serial number range)","Straightforward two-part compliance requirement with clear timelines (immediate replacement vs. 50 flight hours)","No nested definitions, cross-references to other legislation, or conditional exceptions beyond the 'one engine vs. two engines' scenario","Short document (approximately 200 words of substantive content)","Single external reference to manufacturer's service bulletin and German aviation authority AD"],"plain_english_summary":"This mandatory CASA Airworthiness Directive requires replacement of certain Rolls‑Royce BR700 engine electronic controllers (EECs) because incorrect thread‑locking during assembly can allow internal hardware to loosen, short, and cause EEC failure. It applies to BR700‑715A1/B1/C1‑30 engines with EEC part 114E6112G120, serials LHBR04I3–LHBR0419.\n\nIf both engines have the faulty EECs they must be replaced immediately on one engine and within 50 flight hours on the other; single affected engines must be replaced within 50 flight hours."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The instrument is narrowly targeted to EECs with a specific part number and serial-number range fitted to BR700-715A1/B1/C1-30 engines. The text does not indicate any expansion or narrowing of that population beyond the stated Applicability."},"complexity_factors":["Narrow technical applicability — specific engine models, part number and serial-number range required to identify affected units (Applicability).","Operational timing constraints — a before‑further‑flight requirement for one unit and a 50 flight‑hour window for the second creates immediate operational pressure (Requirement; Compliance).","Reliance on external manufacturer procedure — replacement must be carried out in accordance with Rolls‑Royce Alert Service Bulletin BR700-73-A900378, so operators must obtain and follow that document (Requirement).","Safety-critical replacement — potential for in‑service failure if not replaced (Background) increases urgency and inspection/replacement resource needs.","Administrative tracking burden — operators must identify affected serial numbers across aircraft and schedule compliance within the mandated windows (Applicability; Compliance)."],"plain_english_summary":"This Directive requires replacement of specific BR700-715A1/B1/C1-30 Engine Electronic Controllers (P/N 114E6112G120; S/Ns LHBR04I3–LHBR0419) because incorrectly applied thread‑locking could allow internal parts to loosen and short-circuit the EEC (Applicability; Background). Operators must follow Rolls‑Royce Alert Service Bulletin BR700-73-A900378 to replace affected units: where both engines fitted are affected replace one before further flight and the other within 50 flight hours; where one engine is affected replace it within 50 flight hours (Requirement; Compliance)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-br700-7-engine-electronic-controller-eec","history":"/api/acts/ad-br700-7-engine-electronic-controller-eec/history","analysis":"/api/acts/ad-br700-7-engine-electronic-controller-eec/analysis","conflicts":"/api/acts/ad-br700-7-engine-electronic-controller-eec/conflicts","importantCases":"/api/acts/ad-br700-7-engine-electronic-controller-eec/important-cases","documents":"/api/acts/ad-br700-7-engine-electronic-controller-eec/documents"}}