{"id":"F2005L01711","name":"AD/BR700/4 Amdt 1 - Engine Electronic Controller","slug":"ad-br700-4-amdt-1-engine-electronic-controller","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":35783,"registerId":"commonwealth-F2005L01711-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/BR700/4 Amdt 1 | Engine Electronic Controller | 8/2005 DM |\n| ----------------- | ---------------------------- | --------- |\n\n| Applicability: | BR700-715A1-30, BR700-715B1-30 and BR700-715C1-30 engines. |\n| -------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement: | 1. Carry out condition monitoring of the engine electronic controller/full authority digital engine control (EEC/FADEC) system by reading the EEC/FADEC system maintenance messages on the cockpit multifunction control display unit (MCDU) in accordance with Roll-Royce Germany Service Bulletin (SB)SB-BR700-73-900334 Revision 1, dated 26 September 2003, and take the appropriate action specified in the SB within the time limit specified in the SB. |\n| | 2. Remove EECs with serial numbers below 0351 from the engine and return them to BAe Systems Controls for modification in accordance with Rolls-Royce Germany SB-BR700-73-900316 Revision 2, dated 10 September 2003. |\n| | Note: German LBA AD 2003-235 refers. |\n| Compliance: | For Requirement 1: |\n| | a. Engines which have Rolls Royce Germany SB-BR700-73-101318 incorporated, but do not have SB-BR700-73-101422 incorporated |\n| | i. If not accomplished in accordance with the original issue of this initially inspect by 10 July 2005 and thereafter at intervals not exceeding 50 hours time in service (TIS). |\n| | ii. If accomplished in accordance with the original issue of this Directive continue the inspection at intervals not exceeding 50 hours TIS. |\n| | b. Engines which have Rolls Royce Germany SB-BR700-73-101422 incorporated - Within 20 flights after the “Eng Sys Fault” message is annunciated. |\n| | For Requirement 2 - Remains unchanged as “Before 31 December 2004”. |\n| | This Amendment becomes effective on 30 June 2005. |\n\n| Background: | There have been several in-flight shut down events reported in 2002 on BR715 engines, which were caused by faults in the EEC/FADEC systems. The original issue of this Directive initially required condition monitoring of the EEC/FADEC system to detect early indication of faults, followed by modification of the EEC units to increase engine reliability and aircraft dispatchability. |\n| ----------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| | This Amendment continues the requirements of the original issue of the Directive but clarifies the inspection periods for engines with different configurations. |\n| | The original issue of this Directive became effective on15 October 2003. |\n\n![](image.001.png) \nJames Coyne \nDelegate of the Civil Aviation Safety Authority\n\n24 June 2005","sortOrder":0},{"sectionNumber":"AD/BR700/4 Amdt 1","sectionType":"part","heading":"AD/BR700/4 Amdt 1","content":"## AD/BR700/4 Amdt 1","sortOrder":1},{"sectionNumber":"Engine Electronic Controller","sectionType":"part","heading":"Engine Electronic Controller","content":"## Engine Electronic Controller","sortOrder":2},{"sectionNumber":"8/2005 DM","sectionType":"part","heading":"8/2005 DM","content":"## 8/2005 DM","sortOrder":3}],"analysis":{"flash_summary":{"complexity_score":5,"scope_assessment":{"changed":false,"description":"The amendment does not expand the Directive's safety scope; it continues the original requirements and clarifies inspection periods for engines with different service bulletin incorporations. Requirement 2 remains unchanged (‘Before 31 December 2004’) and the amendment primarily refines compliance timing (Background; Compliance)."},"complexity_factors":["Multiple, narrowly specified engine models (BR700-715A1-30, -715B1-30, -715C1-30) increase applicability granularity (Applicability).","Two distinct requirements: ongoing condition monitoring via MCDU and physical removal/return of specific EEC units for modification (Requirement 1; Requirement 2).","Different compliance regimes depending on which Rolls-Royce SBs are already incorporated (SB-BR700-73-101318 vs SB-BR700-73-101422) create branching obligations (Compliance: For Requirement 1 a/b).","Multiple time metrics: initial inspect-by date (10 July 2005), recurring interval (not exceeding 50 hours TIS), and an operational trigger (‘Within 20 flights after the “Eng Sys Fault” message’) add monitoring and scheduling complexity (Compliance: For Requirement 1 a.i/ii and b).","Cross-references to several Rolls‑Royce service bulletins with revision numbers and dates impose dependency on external documents for procedural detail and judgment calls (Requirement 1 references SB-BR700-73-900334 Rev 1; Requirement 2 references SB-BR700-73-900316 Rev 2).","Logistics and costs: removal and return of EECs to BAe Systems Controls for modification creates direct parts-handling, downtime and warranty/repair cost considerations (Requirement 2).","Retroactive timeline tension: Requirement 2 retains a deadline of ‘Before 31 December 2004’ while the amendment is effective 30 June 2005, which may cause practical or record-keeping confusion (Compliance: For Requirement 2).","Operational discretion: the AD instructs operators to ‘take the appropriate action specified in the SB’, which requires maintenance/engineering interpretation of SB instructions and fault messages (Requirement 1).","Regulatory cross-reference: note to German LBA AD 2003-235 introduces inter-jurisdictional linkage that may affect multinational operators (Note)."],"plain_english_summary":"Requires operators of BR700-715A1/B1/C1 engines to monitor the engine electronic controller (EEC/FADEC) via cockpit MCDU messages per Rolls‑Royce service bulletin and to remove/return EEC units with serial numbers below 0351 for modification. The amendment does not add new obligations but clarifies inspection timing and intervals for engines with different installed service bulletins, affecting maintenance schedules, inspection frequency, part returns and aircraft dispatchability."},"kimi_summary":{"content_quality":"ok","complexity_score":4,"scope_assessment":{"changed":false,"description":"This amendment remains within the original scope of addressing EEC/FADEC system faults that caused in-flight shutdowns. It clarifies inspection intervals for different engine configurations but does not expand the directive to cover new systems or unrelated safety issues."},"complexity_factors":["Multiple compliance pathways based on engine modification status (whether specific Service Bulletins SB-BR700-73-101318 and SB-BR700-73-101422 have been incorporated)","Nested conditional logic: Requirement 1 splits into sub-categories (a) and (b), with sub-category (a) further splitting into (i) and (ii) based on prior compliance","Cross-references to external technical documents: Rolls-Royce Germany Service Bulletins SB-BR700-73-900334 and SB-BR700-73-900316","Mixed compliance timeframes: flight hours, calendar dates, and flight counts ('20 flights after' warning)","Reference to foreign aviation authority (German LBA AD 2003-235) without reproducing its content","Technical aviation terminology requiring specialized knowledge (TIS, MCDU, FADEC, EEC, Service Bulletins)"],"plain_english_summary":"This CASA Airworthiness Directive requires operators of Rolls‑Royce BR700‑715A1/B1/C1‑30 engines (commonly on Boeing 717s) to increase monitoring of the Engine Electronic Controller (EEC) for fault messages and to remove/return older EEC units (serial numbers below 0351) to the manufacturer for modification. It’s a mandatory safety step to detect controller faults early and prevent the in‑flight engine shutdowns that occurred in 2002."},"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"}},"importantCases":[],"_links":{"self":"/api/acts/ad-br700-4-amdt-1-engine-electronic-controller","history":"/api/acts/ad-br700-4-amdt-1-engine-electronic-controller/history","analysis":"/api/acts/ad-br700-4-amdt-1-engine-electronic-controller/analysis","conflicts":"/api/acts/ad-br700-4-amdt-1-engine-electronic-controller/conflicts","importantCases":"/api/acts/ad-br700-4-amdt-1-engine-electronic-controller/important-cases","documents":"/api/acts/ad-br700-4-amdt-1-engine-electronic-controller/documents"}}