{"id":"F2008L04462","name":"AD/B747/385 - Fuel Pump Discharge Port","slug":"ad-b747-385-fuel-pump-discharge-port","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":76465,"registerId":"commonwealth-F2008L04462-current","compilationNumber":null,"startDate":"2026-04-02","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Boeing 747 Series Aeroplanes","sectionType":"division","heading":"Boeing 747 Series Aeroplanes","content":"### Boeing 747 Series Aeroplanes\n\n| AD/B747/385 | Fuel Pump Discharge Port | 13/2008 |\n| ----------- | ------------------------ | ------- |\n\n| Applicability: | Boeing Model 747-400, 747-400D, and 747-400F series aeroplanes as identified in Boeing Special Attention Service Bulletin 747-28-2260, dated 13 March 2008.                                                                                                                                                                                                      |\n| -------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |\n| Requirement:   | Install an extension tube to the existing pump discharge port of the scavenge pump on the outboard side of the centre fuel tank in the main fuel tank No. 2, in accordance with the Accomplishment Instructions of Boeing Special Attention Service Bulletin 747-28-2260, dated 13 March 2008.Note: FAA AD 2008-21-06 Amdt 39-15690 dated 2 October 2008 refers. |\n| Compliance:    | Within 60 months after the effective date of this AD, unless previously accomplished.                                                                                                                                                                                                                                                                            |\n|                | This Airworthiness Directive becomes effective on 18 December 2008.                                                                                                                                                                                                                                                                                              |\n| Background:    | This AD results from fuel system reviews conducted by the manufacturer. The issuing of this AD is intended to prevent a fire or explosion in the fuel tank and consequent loss of the aeroplane.                                                                                                                                                                 |\n\n![](image.001.png)  \nJames Coyne  \nDelegate of the Civil Aviation Safety Authority\n\n6 November 2008","sortOrder":0},{"sectionNumber":"AD/B747/385","sectionType":"part","heading":"AD/B747/385","content":"## AD/B747/385","sortOrder":1},{"sectionNumber":"Fuel Pump Discharge Port","sectionType":"part","heading":"Fuel Pump Discharge Port","content":"## Fuel Pump Discharge Port","sortOrder":2},{"sectionNumber":"13/2008","sectionType":"part","heading":"13/2008","content":"## 13/2008","sortOrder":3}],"analysis":{"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"},"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"The AD’s scope is confined to the identified 747-400 series aeroplanes and the single mandated modification. The stated purpose (preventing fuel‑tank fire or explosion) aligns with the requirement to install the extension tube; the instrument neither broadens nor narrows applicability beyond the specified models and service bulletin."},"complexity_factors":["Narrow applicability: specific to Boeing 747-400, -400D and -400F identified in a single Boeing service bulletin (limits affected fleet).","Single, discrete technical action: install an extension tube to an existing pump discharge port (one modification step rather than multiple options).","Dependence on external documents: requires following Boeing Special Attention Service Bulletin 747-28-2260 (external procedural detail not reproduced in the AD).","Compliance timeframe: a 60‑month window provides scheduling flexibility but creates long-term tracking and record-keeping obligations for operators.","Safety-critical location: modification is within a fuel tank scavenge system, implying work under aviation maintenance rules and certified personnel (operational/maintenance burden).","Cross-reference to FAA AD 2008-21-06 introduces multi-jurisdictional compliance context for internationally operated aircraft."],"plain_english_summary":"This Airworthiness Directive requires operators of Boeing 747-400, 747-400D and 747-400F aeroplanes (as identified in Boeing Special Attention Service Bulletin 747-28-2260, dated 13 March 2008) to install an extension tube on the scavenge pump discharge port in main fuel tank No. 2, following the Boeing service instructions. Compliance is required within 60 months of the AD’s effective date (18 December 2008). The AD states its aim is to reduce the risk of a fuel-tank fire or explosion; operators pay for and arrange the modification and the regulator enforces compliance."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard, narrow Airworthiness Directive focused on a specific safety modification. It has not expanded beyond its original purpose of mandating a single fuel system safety fix for specific aircraft models."},"complexity_factors":["Single, specific mechanical modification required","Only one defined applicability criterion (specific Boeing models listed in a single Service Bulletin)","Single compliance timeframe (60 months) with one exception clause ('unless previously accomplished')","No nested conditions or cross-references to other legislation beyond a single reference to the FAA AD for context","Very short document (approximately 200 words of substantive content)","Clear, direct instruction with no interpretive ambiguity"],"plain_english_summary":"This CASA Airworthiness Directive mandates that owners/operators of certain Boeing 747-400, 747-400D and 747-400F aircraft (as listed in Boeing Service Bulletin 747-28-2260) install an extension tube on a centre fuel tank pump per Boeing’s instructions. The modification, required within 60 months of 18 December 2008 unless already accomplished, prevents fuel-vapour ignition and is legally compulsory for continued airworthiness."}},"importantCases":[],"_links":{"self":"/api/acts/ad-b747-385-fuel-pump-discharge-port","history":"/api/acts/ad-b747-385-fuel-pump-discharge-port/history","analysis":"/api/acts/ad-b747-385-fuel-pump-discharge-port/analysis","conflicts":"/api/acts/ad-b747-385-fuel-pump-discharge-port/conflicts","importantCases":"/api/acts/ad-b747-385-fuel-pump-discharge-port/important-cases","documents":"/api/acts/ad-b747-385-fuel-pump-discharge-port/documents"}}