{"id":"F2006B03394","name":"AD/B767/40 - Aft Equipment/Lavatory/Galley Ventilation Fan Wire Bundles","slug":"ad-b767-40-aft-equipment-lavatory-galley-ventilation-fan-wire-bundles","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":42935,"registerId":"commonwealth-F2006B03394-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/B767/40 - Aft Equipment/Lavatory/Galley Ventilation Fan Wire Bundles","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-generator: Aspose.Words for .NET 22.10.0\n---\n\n?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n\nCOMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  Boeing 767 Series Aeroplanes\n\n \n\n# AD/B767/40 Aft Equipment/Lavatory/Galley Ventilation Fan Wire Bundles\n\nApplicability: All Boeing 767 series aeroplanes as detailed in the Requirement document.\n\n# 9/90\n\n \n\nRequirement: Re-route the aft equipment/lavatory/galley ventilation fan wire bundles along the frame assembly at Stn 1540 IAW Boeing ASB 767-21A0074.\n\n \n\nNote: FAA AD 90-08-13 also refers.\n\n \n\nCompliance: Prior to 6 September 1991.\n\n \n\nBackground: This AD is prompted by a report of charred insulation blankets aft of station 1540 which resulted from arcing and burning of damaged wire bundles. This condition, if not corrected, could result in a fire behind the aft cargo compartment wall.\n\nCompliance with this AD is required in order to minimise the possibility of inadvertent damage to the wire bundles.\n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n","sortOrder":0}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive addressing a specific wiring defect in a specific aircraft type. It has not expanded beyond its original purpose of preventing fire hazards from damaged wire bundles."},"complexity_factors":["Very short document (under 200 words)","Only 1 substantive requirement with clear spatial reference (station 1540)","Single cross-reference to Boeing service bulletin (ASB 767-21A0074) and FAA AD 90-08-13","No defined terms section","No conditional logic or exceptions","Straightforward compliance deadline with no alternative methods stated"],"plain_english_summary":"This AD requires operators of Boeing 767 aeroplanes in Australia to re-route the electrical wiring that powers aft equipment, lavatory and galley ventilation fans so the bundles run along the station‑1540 frame assembly. \n\nThe change addresses prior wiring damage that caused charred insulation and arcing — a fire risk behind the aft cargo compartment — and is a one‑time mandatory modification to be completed by 6 September 1991."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive addresses a specific wiring routing defect identified aft of station 1540 and prescribes a single corrective action tied to a Boeing service bulletin. It does not expand applicability beyond the defined Boeing 767 fleet, add new types of work, or alter the operational scope beyond the specified re-routing and compliance deadline (Applicability; Requirement; Compliance; Background)."},"complexity_factors":["Single, targeted technical action: re-route specific wire bundles along frame at Stn 1540 (Requirement).","Clear applicability: all Boeing 767 series aeroplanes as defined in the Requirement document (Applicability).","Prescribed method reference: work must be done IAW Boeing ASB 767-21A0074, requiring operator access to and reliance on that service bulletin (Requirement).","Fixed compliance deadline: completion prior to 6 September 1991 creates scheduling/downtime pressure for operators (Compliance).","Safety-driven rationale: response to reported charring from arcing; mandate aims to reduce fire risk behind aft cargo wall (Background).","Cross-reference to FAA AD 90-08-13 indicates harmonisation with foreign regulator guidance and potential for differing implementation details (Note).","Operational burden: requires approved maintenance resources, potential parts/tools, and record-keeping to demonstrate compliance (implied by Requirement/Compliance).","Limited regulatory discretion shown in text—no alternative compliance procedures or exemptions stated in this AD (Requirement/Compliance)."],"plain_english_summary":"This airworthiness directive mandates that operators of Boeing 767 aeroplanes re-route the aft equipment/lavatory/galley ventilation fan wire bundles along the frame at station 1540, in accordance with Boeing ASB 767-21A0074, to be completed before 6 September 1991. The directive aims to prevent arcing and burning of damaged wires that could ignite insulation behind the aft cargo compartment wall. Operators pay for and arrange the maintenance, which must follow the specified service bulletin (Requirement; Compliance; Background)."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b767-40-aft-equipment-lavatory-galley-ventilation-fan-wire-bundles","history":"/api/acts/ad-b767-40-aft-equipment-lavatory-galley-ventilation-fan-wire-bundles/history","analysis":"/api/acts/ad-b767-40-aft-equipment-lavatory-galley-ventilation-fan-wire-bundles/analysis","conflicts":"/api/acts/ad-b767-40-aft-equipment-lavatory-galley-ventilation-fan-wire-bundles/conflicts","importantCases":"/api/acts/ad-b767-40-aft-equipment-lavatory-galley-ventilation-fan-wire-bundles/important-cases","documents":"/api/acts/ad-b767-40-aft-equipment-lavatory-galley-ventilation-fan-wire-bundles/documents"}}