{"id":"F2006B03431","name":"AD/B767/77 Amdt 2 - Override/Jettison Fuel Pump","slug":"ad-b767-77-amdt-2-override-jettison-fuel-pump","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":42972,"registerId":"commonwealth-F2006B03431-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/B767/77 Amdt 2 - Override/Jettison Fuel Pump","content":"COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 \\- 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n![](image.001.png)  \nBoeing 767 Series Aeroplanes\n\nAD/B767/77\n\nAmdt 2\n\n  \nOverride/Jettison Fuel Pump 13/94\n\nApplicability: Model 767 series aircraft line position 001 to 545 inclusive.\n\nRequirement: Action in accordance with Boeing Alert Service Bulletin 767-28A0045 Revision 2.\n\nNote: Sundstrand SB 5006286-28-A5 Revision 2 and FAA AD 94-11-05 Amdt 39- 8921 refers.\n\nCompliance: Unless previously carried out, within 30 days from 8 December 1994.\n\nThereafter, repeat the inspection at intervals not exceeding 1000 hours time in service until the requirements of Boeing SB 767-28-0046 have been incorporated.\n\nBackground: The manufacturer has advised that a loose diffuser ring may cause damage to the impeller and pumping unit housing causing the pump to lock-up.\n\nDuring dry fuel pump operation, a loose diffuser ring may result in metal-to-metal contact creating a potential ignition source.\n\nThis amendment adds terminating action for this directive.","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This amendment remains tightly focused on its original purpose — addressing the specific fuel pump defect in early Boeing 767s. Amendment 2 simply adds a terminating action (the permanent fix that ends recurring inspections), which is a standard and expected evolution of airworthiness directives. The scope has not expanded beyond the original safety issue."},"complexity_factors":["Very short document (under 300 words)","Only 1 defined term implicitly used ('time in service' — flight hours)","Single, clear compliance pathway with straightforward timeline","No nested exceptions or conditional logic","Cross-references are simple pointers to manufacturer bulletins and FAA directive, not legislative cross-references","Amendment 2 adds only one new element: terminating action"],"plain_english_summary":"This is an **Airworthiness Directive** — a mandatory safety order issued by Australia's Civil Aviation Safety Authority (CASA) that requires specific repairs or inspections on aircraft.\n\n**What it does:**\nOrders owners and operators of **Boeing 767 aircraft** (specifically those built in positions 001 to 545) to inspect and fix a dangerous fuel pump problem.\n\n**The safety problem:**\nThe **override/jettison fuel pump** — a pump used to dump fuel in emergencies or move fuel between tanks — has a **loose diffuser ring** inside it. This loose part can:\n- Damage the pump's impeller (the spinning part that moves fuel)\n- Cause the pump to seize up completely\n- Create metal-on-metal contact that could spark and ignite fuel vapors\n\n**What must be done:**\n- **Initial action:** Follow Boeing's repair instructions (Alert Service Bulletin 767-28A0045 Revision 2) within 30 days of 8 December 1994\n- **Ongoing checks:** Repeat inspections every 1,000 flight hours until a permanent fix is installed\n- **Permanent fix:** Install the parts specified in Boeing Service Bulletin 767-28-0046 (this \"terminating action\" ends the need for repeated inspections)\n\n**Who it affects:**\nAirlines and operators flying early-production Boeing 767s in Australia.\n\n**Why it matters:**\nFuel pump failures can cause engine flame-outs or fires. This directive prevents a known defect from causing catastrophic accidents."},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":true,"description":"This amendment adds a terminating action to the original directive: until now, the directive required repeating inspections every 1,000 hours; the amendment specifies that incorporation of Boeing SB 767-28-0046 is the terminating modification that stops the inspection requirement. (Compliance; final sentence) Previously the AD required repeated inspections; this amendment provides a defined modification that removes that recurring obligation once incorporated."},"complexity_factors":["Limited applicability to a defined subset of Boeing 767 line positions (001–545). (Applicability)","Mandatory action is defined by reference to a manufacturer service bulletin rather than by in-text technical steps, requiring operators to obtain and follow external technical documents. (Requirement)","A short fixed compliance deadline (30 days from 8 December 1994) for initial action plus a repeating inspection obligation every 1,000 hours until a terminating modification is incorporated. (Compliance)","Cross-references to other technical documents and an FAA AD create dependency on external material for full context. (Note)","The amendment adds a terminating action that changes the long-run obligation, creating a decision point for operators whether to continue inspections or install the terminating modification. (Final sentence; Compliance)"],"plain_english_summary":"Applies to Boeing 767 line positions 001–545 and requires operators to carry out Boeing Alert Service Bulletin 767-28A0045 Rev 2 within 30 days of 8 Dec 1994, with repeat inspections every 1,000 hours until the terminating modification in Boeing SB 767-28-0046 is incorporated. It targets owners/operators, imposes maintenance, inspection and record‑keeping costs, and addresses the safety risk that a loose diffuser ring can damage pump components and create a potential ignition source."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b767-77-amdt-2-override-jettison-fuel-pump","history":"/api/acts/ad-b767-77-amdt-2-override-jettison-fuel-pump/history","analysis":"/api/acts/ad-b767-77-amdt-2-override-jettison-fuel-pump/analysis","conflicts":"/api/acts/ad-b767-77-amdt-2-override-jettison-fuel-pump/conflicts","importantCases":"/api/acts/ad-b767-77-amdt-2-override-jettison-fuel-pump/important-cases","documents":"/api/acts/ad-b767-77-amdt-2-override-jettison-fuel-pump/documents"}}