{"id":"F2006B03083","name":"AD/B747/181 - Door 4 Galley Electrical Power Feeder/Oxygen Plumbing","slug":"ad-b747-181-door-4-galley-electrical-power-feeder-oxygen-plumbing","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":42442,"registerId":"commonwealth-F2006B03083-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/B747/181 - Door 4 Galley Electrical Power Feeder/Oxygen Plumbing","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 747 Series Aeroplanes\n\nAD/B747/181 Door 4 Galley Electrical Power Feeder/Oxygen Plumbing\n\n  \n6/98\n\nApplicability: Model 747-400 series aeroplanes listed in Boeing Alert Service Bulletin (ASB) 747- 25A3137 dated 13 March 1997.\n\nRequirement: 1. Perform a one time inspection of the separation between the galley power feeder and the static ground wiring, and the adjacent passenger oxygen system tubing in the forward ceiling area above the door 4 galley. The inspection is to be accomplished in accordance with either, Boeing ASB 747-25A3137, ASB 747- 25A3137 Revision 1 dated 21 August 1997 or ASB 747-25A3137 Revision 2\n\ndated 16 October 1997.\n\n2. If, as a result of the Requirement 1 inspection, the separation is found to be outside the limits specified in the relevant Boeing ASB, reroute the wiring and install clamps and sleeves in accordance with the ASB.\n\nNote: FAA AD 98-06-29 Amdt 39-10407 refers.\n\nCompliance: 1. Prior to 31 March 1999.\n\n2. Before further flight, after the Requirement 1 inspection. This airworthiness directive becomes effective on 21 May 1998.\n\nBackground: The FAA has received reports of inadequate clearance between the galley power feeder wiring and passenger oxygen system tubing. The inadequate clearance could result in a fire in the ceiling area above the door 4 galley due to chafing on the oxygen system tubing.\n\nActions required by this directive are intended to decrease the likelihood of a fire caused by electrical wiring chafing on the oxygen system tubing.","sortOrder":0}],"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"},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The directive's scope matches the safety objective stated in the background: it targets inadequate clearance between galley power feeder wiring and passenger oxygen tubing above Door 4 on the listed 747‑400s. It does not expand beyond those aeroplanes or beyond inspection and corrective actions described in the Boeing ASB."},"complexity_factors":["Aircraft‑specific applicability limited to 747‑400s listed in Boeing ASB (Applicability).","Prescriptive reliance on external manufacturer documents and multiple ASB revisions for inspection and repair procedures (Requirement 1).","Two distinct compliance triggers: a dated one‑time inspection deadline and an immediate 'before further flight' requirement for corrective action (Compliance; Requirement 2).","Technical access and assessment of wiring/tubing separation in the forward ceiling above Door 4 — requires maintenance access and inspection skills (Requirement 1).","Corrective work involves physical rerouting and installation of clamps/sleeves, which may require parts, shop time and documentation (Requirement 2).","Regulator cross‑reference to FAA AD creates an international compliance context (Note)."],"plain_english_summary":"This airworthiness directive requires operators of specified Boeing 747-400 aeroplanes to carry out a one‑time inspection of the separation between the galley power feeder wiring and the passenger oxygen tubing above Door 4, and to reroute wiring and fit clamps/sleeves where clearances do not meet Boeing's limits. The stated purpose is to reduce the risk of a fire from wiring chafing on oxygen tubing. The directive places inspection and corrective‑work costs and scheduling on aircraft operators."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete airworthiness directive addressing a specific safety issue (wiring/oxygen tube proximity) on a specific aircraft model (Boeing 747-400). It has not expanded beyond its original technical safety purpose."},"complexity_factors":["Single, specific technical requirement (inspection of one aircraft system in one location)","Only 2 compliance actions required (inspect; repair if needed)","No defined terms section or interpretation provisions","Minimal conditional logic (only one 'if-then' scenario for repairs)","Short document (approximately 250 words)","Single cross-reference to FAA directive for background context only"],"plain_english_summary":"This safety order requires operators of certain Boeing 747-400s (per Boeing’s March 1997 service bulletin) to inspect wiring and oxygen tubing above Door 4 for chafing risk and to fix any inadequate separation before the next flight. Inspections must be completed by 31 March 1999. The measures (rerouting, clamps/sleeves as specified) address a fire hazard from wires abrading oxygen lines and mirror prior FAA action."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b747-181-door-4-galley-electrical-power-feeder-oxygen-plumbing","history":"/api/acts/ad-b747-181-door-4-galley-electrical-power-feeder-oxygen-plumbing/history","analysis":"/api/acts/ad-b747-181-door-4-galley-electrical-power-feeder-oxygen-plumbing/analysis","conflicts":"/api/acts/ad-b747-181-door-4-galley-electrical-power-feeder-oxygen-plumbing/conflicts","importantCases":"/api/acts/ad-b747-181-door-4-galley-electrical-power-feeder-oxygen-plumbing/important-cases","documents":"/api/acts/ad-b747-181-door-4-galley-electrical-power-feeder-oxygen-plumbing/documents"}}