{"id":"F2006B03290","name":"AD/B767/109 Amdt 1 - Engine Indicating and Crew Alerting System","slug":"ad-b767-109-amdt-1-engine-indicating-and-crew-alerting-system","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":42727,"registerId":"commonwealth-F2006B03290-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/B767/109 Amdt 1 - Engine Indicating and Crew Alerting System","content":"![](image.001.png)\n\n![](image.001.png)  \nAIRWORTHINESS DIRECTIVE\n\nFor the reasons set out in the background section, the CASA delegate whose signature appears below revokes Airworthiness Directive (AD) No AD/B767/109 and issues the following 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\n![](image.001.png)\n\nBoeing 767 Series Aeroplanes\n\nAD/B767/109\n\nAmdt 1\n\n  \nEngine Indicating and Crew Alerting System 2/2002\n\nApplicability: Model 767 series aeroplanes identified in Boeing Service Bulletins (SB) 767-31-0098 dated 27 August 1998, 767-31-0091 Revision 1 dated 4 February 1999 or 767-31-\n\n0099 Revision 3 dated 8 February 2001.\n\nRequirement: 1. For aeroplanes with General Electric engines - Install an upgraded engine indicating and crew alerting system (EICAS) computer in accordance with either SB 767-31-0098 or 767-31-0091 Revision 1, as applicable.\n\n2. For aeroplanes with Rolls Royce engines - Unless previously accomplished, install an upgraded EICAS computer in accordance with SB 767-31-0099 Revision 3 dated 8 February 2001.\n\nNote: FAA AD 96-07-09 Amdt 39-9558 refers.\n\nCompliance: For Requirement 1 \\- Remains unchanged, No later than 1 June 2001.\n\nFor Requirement 2 \\- No later than 21 March 2002.\n\nThis Amendment becomes effective on 21 February 2002.\n\nBackground: The Federal Aviation Administration issued an airworthiness directive following a finding that EICAS computers currently installed on certain Boeing 767 aeroplanes do not provide an appropriate indication to the flight crew of an impending fuel filter bypass condition. Replacement of the EICAS computer ensures that the flight crew is aware of conditions involving a severely contaminated fuel system and the associated increased potential for engine power loss.\n\nThe original issue of this Directive addressed 767 aeroplanes with engines manufactured by General Electric. This amendment introduces similar requirements for 767 aeroplanes with Rolls Royce RB211 engines.\n\nBoeing 767 Series Aeroplanes\n\nAD/B767/109 Amdt 1 (continued)\n\nThe original issue of this Airworthiness Directive became effective on 17 June 1999.\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 14 January 2002\n\n![](image.001.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 30 January 2002.","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":true,"description":"Yes — the amendment expanded the original AD's scope. The original AD addressed only Boeing 767 aeroplanes with General Electric engines; this amendment adds a similar mandatory retrofit requirement for 767 aeroplanes fitted with Rolls-Royce RB211 engines (Requirement 2; Background). The amendment therefore broadens the population of affected aircraft and sets a separate compliance deadline for the newly included engine group."},"complexity_factors":["Short, self-contained document (single-page AD amendment).","Two primary conditional branches only: Requirement 1 (GE engines) and Requirement 2 (Rolls-Royce engines).","References to three Boeing Service Bulletins (SB 767-31-0098; SB 767-31-0091 Rev 1; SB 767-31-0099 Rev 3) for technical execution.","Cross-reference to FAA AD 96-07-09 (Note).","Two explicit compliance deadlines (one unchanged, one new) and an effective date.","Revocation of the prior AD and limited scope expansion (adds Rolls-Royce-equipped aeroplanes)."],"plain_english_summary":"**What this instrument requires**\n\n- This Airworthiness Directive (AD) requires operators of certain Boeing 767 aeroplanes to install an upgraded Engine Indicating and Crew Alerting System (EICAS) computer. The AD lists the affected aeroplanes by reference to specific Boeing Service Bulletins (SB 767-31-0098; SB 767-31-0091 Rev 1; SB 767-31-0099 Rev 3) (see Applicability; Requirement).\n\n- There are two separate requirements, depending on engine type:\n  - For Boeing 767s with General Electric engines: install the upgraded EICAS computer in accordance with Boeing SB 767-31-0098 or SB 767-31-0091 Rev 1 (Requirement 1). The compliance date for this requirement remained no later than 1 June 2001 (Compliance).\n  - For Boeing 767s with Rolls-Royce RB211 engines: unless already done, install the upgraded EICAS computer in accordance with Boeing SB 767-31-0099 Rev 3 dated 8 February 2001 (Requirement 2). The compliance date for this requirement is no later than 21 March 2002 (Compliance).\n\n- The AD revokes the previous version (AD/B767/109) and replaces it with this amended version (Amdt 1). The amendment adds the Rolls-Royce-engine requirement (Background; Effectivity).\n\n**Who is affected**\n\n- Airlines and operators that own or operate Boeing 767 series aeroplanes that match the aeroplane serials/installation conditions described in the cited Boeing Service Bulletins (Applicability). In practice this is operators of 767s fitted with either General Electric or Rolls-Royce RB211 engines where the existing EICAS computer lacks the upgraded functionality.\n\n**Why it matters (mechanics and safety rationale)**\n\n- The AD was issued because the EICAS computers installed on some Boeing 767s did not provide an appropriate indication to the flight crew of an impending fuel-filter bypass condition (Background). A fuel-filter bypass condition can indicate severe fuel contamination and increase the risk of engine power loss. Installing the upgraded EICAS computer changes the aircraft’s warning/indication behaviour so the flight crew receives the appropriate alert about a contaminated fuel system.\n\n**Who pays and who decides**\n\n- Operators pay for the upgraded EICAS computers, parts, and installation (operators bear direct costs and aircraft downtime). The Civil Aviation Safety Authority (CASA) delegate issues the AD and sets the compliance requirements and deadlines (pursuant to CAR 1998 subregulation 39.1(1)). The AD requires installations to be done in accordance with the Boeing Service Bulletins cited (Requirement).\n\n**Implementation and compliance mechanics**\n\n- The technical work must follow the instructions in the relevant Boeing Service Bulletin (Requirement). The AD sets firm calendar deadlines for compliance by engine type (Compliance). Non-compliance after the listed date would mean the aircraft is not meeting its continuing airworthiness requirement under the AD.\n\n**Costs, incentives and trade-offs**\n\n- Concentrated costs fall on the owners/operators of affected 767s (purchase of EICAS computer(s), engineering/installation labour, and aircraft downtime). The safety benefit (earlier/more reliable crew indication of fuel contamination) is distributed across passengers, crew, and the operator’s risk profile.\n\n- Timing differences between engine types create differing short-term burdens: GE-equipped aeroplanes had an earlier deadline (remained unchanged), while the amendment added a later deadline for Rolls-Royce-equipped aeroplanes (Compliance; Background). Availability of parts and maintenance slots can be an implementation constraint.\n\n**Risks and practical considerations**\n\n- Implementation risk includes parts availability, scheduling the retrofit without excessive operational disruption, and ensuring the retrofit is carried out exactly per the Boeing Service Bulletin instructions (Requirement). CASA enforces compliance by AD; effectiveness depends on operators executing the SB instructions and on post-modification verification.\n\n**Cross-references**\n\n- The AD references the FAA AD 96-07-09 (Note) and relies on Boeing Service Bulletins for the technical procedure (Applicability; Requirement).\n\n(References in parentheses point to the AD's labeled sections: Applicability, Requirement, Compliance, Background, Note.)"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":true,"description":"The original directive (issued 1999) only applied to Boeing 767s with General Electric engines. This amendment expands the scope to include Rolls Royce RB211 engines, effectively doubling the aircraft population covered by the safety requirement. The expansion follows the same safety rationale (fuel filter bypass warnings) but applies it to a different engine manufacturer configuration."},"complexity_factors":["Very short document (approximately 300 words)","Only 2 substantive requirements with clear engine-type distinctions","Minimal defined terms (only standard aviation acronyms like EICAS, SB, AD)","No nested conditional logic or cross-references to other legislation","Simple binary applicability (GE engines vs Rolls Royce engines)","Clear, fixed compliance dates with no exceptions or alternative methods"],"plain_english_summary":"This AD mandates upgrading the Engine Indicating and Crew Alerting System (EICAS) on certain Boeing 767s because the older computers can fail to warn crews about severely clogged fuel filters, risking engine power loss. It applies to 767s with GE engines (compliance date was 1 June 2001) and now also includes Rolls‑Royce–engined 767s, with a compliance deadline of 21 March 2002."},"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"}},"importantCases":[],"_links":{"self":"/api/acts/ad-b767-109-amdt-1-engine-indicating-and-crew-alerting-system","history":"/api/acts/ad-b767-109-amdt-1-engine-indicating-and-crew-alerting-system/history","analysis":"/api/acts/ad-b767-109-amdt-1-engine-indicating-and-crew-alerting-system/analysis","conflicts":"/api/acts/ad-b767-109-amdt-1-engine-indicating-and-crew-alerting-system/conflicts","importantCases":"/api/acts/ad-b767-109-amdt-1-engine-indicating-and-crew-alerting-system/important-cases","documents":"/api/acts/ad-b767-109-amdt-1-engine-indicating-and-crew-alerting-system/documents"}}