{"id":"F2005L03539","name":"AD/A320/185 - Centre Tank Fuel Pump Control","slug":"ad-a320-185-centre-tank-fuel-pump-control","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":39035,"registerId":"commonwealth-F2005L03539-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Airbus Industrie A319, A320 and A321 Ser","sectionType":"division","heading":"Airbus Industrie A319, A320 and A321 Series Aeroplanes","content":"### Airbus Industrie A319, A320 and A321 Series Aeroplanes\n\n| AD/A320/185 | Centre Tank Fuel Pump Control | 13/2005 |\n| ----------- | ----------------------------- | ------- |\n\n| Applicability: | A319 and A320 model aeroplanes, all serial numbers, that have incorporated Airbus modification 20024 during production (installation of a centre tank), except aeroplane that have incorporated Airbus modification 24373 during production or Airbus Service Bulletin (SB) A320-28-1059 at original issue or Revision 1, 2, 3, 4, 5 or 6 whilst in service. |\n| -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |\n| Requirement:   | Modify the wiring to the pump control of the centre tank, in accordance with SB A320-28-1059 Revision 6 or later revision approved by the Direction Générale de l’Aviation Civile of France.                                                                                                                                                                 |\n|                | Note: DGAC AD F-2005-173 (EASA Approval 2005-6368) refers.                                                                                                                                                                                                                                                                                                   |\n| Compliance:    | Within 20 months after the effective date of this Directive.                                                                                                                                                                                                                                                                                                 |\n|                | This Airworthiness Directive becomes effective on 22 December 2005.                                                                                                                                                                                                                                                                                          |\n| Background:    | Following the TWA800 in flight incident the United States Federal Aviation Administration issued Special Federal Aviation Regulation (SFAR) 88. The European Joint Aviation Authorities adopted similar regulations to SFAR 88 requiring a design review against fuel tank explosion risks.                                                                  |\n|                | This Directive renders mandatory modification of the fuel pump control of the centre tank and is a consequence of this design review.                                                                                                                                                                                                                        |\n\n![](image.001.png)  \nJames Coyne  \nDelegate of the Civil Aviation Safety Authority\n\n8 November 2005","sortOrder":0},{"sectionNumber":"AD/A320/185","sectionType":"part","heading":"AD/A320/185","content":"## AD/A320/185","sortOrder":1},{"sectionNumber":"Centre Tank Fuel Pump Control","sectionType":"part","heading":"Centre Tank Fuel Pump Control","content":"## Centre Tank Fuel Pump Control","sortOrder":2},{"sectionNumber":"13/2005","sectionType":"part","heading":"13/2005","content":"## 13/2005","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 enforces the safety modification envisioned by the SFAR 88 design review; it targets A319/A320 aeroplanes with centre tanks and explicitly excludes aircraft already altered per specified mods/SB revisions. The scope aligns with the original safety objective and does not broaden or narrow it beyond those eligibility exceptions."},"complexity_factors":["Narrow technical aim: a single wiring modification to centre‑tank pump control reduces legal complexity.","Applicability exceptions: applies only to aircraft with mod 20024 but excludes those with mod 24373 or specified SB revisions, requiring fleet-level eligibility checks.","Normative reference: mandates compliance with Service Bulletin A320‑28‑1059 Rev 6 or later, subject to approval by the French DGAC, adding an approval dependency.","Compliance timeframe: 20‑month deadline imposes scheduling and logistical constraints on operators and maintenance providers.","Cross‑referenced regulatory material: notes DGAC AD F‑2005‑173 (EASA approval), creating multi‑jurisdictional paperwork and oversight considerations."],"plain_english_summary":"This Airworthiness Directive requires a wiring modification to the centre‑tank fuel pump control on Airbus A319/A320 aeroplanes fitted with a centre tank (Airbus mod 20024), except aircraft already modified by Airbus mod 24373 or by specified service bulletin revisions. Work must follow Service Bulletin A320‑28‑1059 (Revision 6 or later DGAC‑approved) and be done within 20 months of the AD’s effective date. It implements a fuel‑tank safety change arising from the post‑TWA800 design review (SFAR 88). Operators pay for and schedule the modification; DGAC approves acceptable revisions."},"kimi_summary":{"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This is a standard Airworthiness Directive implementing international safety standards. The scope remains tightly focused on the specific wiring modification for centre tank fuel pump controls in response to the TWA800 investigation findings. No scope creep is evident."},"complexity_factors":["Single, specific technical requirement (rewiring per specific service bulletin)","Clear applicability criteria with explicit serial number and modification exclusions","Simple compliance deadline (20 months from effective date)","No nested exceptions or conditional logic — just one straightforward exemption (already modified aircraft)","Short document (approximately 200 words of substantive content)","Only one defined regulatory reference (SFAR 88) explained in background"],"plain_english_summary":"This Australian Airworthiness Directive requires owners/operators of certain Airbus A319/A320 aircraft built with a centre fuel tank configuration to rewire the centre tank fuel pump controls using Airbus Service Bulletin A320-28-1059 (Rev 6 or later), unless the aircraft already has the specified fix. The mandatory modification, prompted by lessons from the TWA Flight 800 investigation, must be completed within 20 months of 22 Dec 2005 for continued legal operation in Australia."}},"importantCases":[],"_links":{"self":"/api/acts/ad-a320-185-centre-tank-fuel-pump-control","history":"/api/acts/ad-a320-185-centre-tank-fuel-pump-control/history","analysis":"/api/acts/ad-a320-185-centre-tank-fuel-pump-control/analysis","conflicts":"/api/acts/ad-a320-185-centre-tank-fuel-pump-control/conflicts","importantCases":"/api/acts/ad-a320-185-centre-tank-fuel-pump-control/important-cases","documents":"/api/acts/ad-a320-185-centre-tank-fuel-pump-control/documents"}}