{"id":"F2005L00573","name":"AD/A330/47 - Fuel - THS Fuel Tanks","slug":"ad-a330-47-fuel-ths-fuel-tanks","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":112798,"registerId":"commonwealth-F2005L00573-current","compilationNumber":null,"startDate":"2026-04-03","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"Airbus Industrie A330 Series Aeroplanes","sectionType":"division","heading":"Airbus Industrie A330 Series Aeroplanes","content":"### Airbus Industrie A330 Series Aeroplanes\n\n| AD/A330/47 | Fuel - THS Fuel Tanks | 4/2005 |\n| ---------- | --------------------- | ------ |\n\n| Applicability: | AIRBUS A330 aeroplanes fitted with Intertechnique outboard vent float valve part number (P/N) L87-13-002 installed in the trimmable horizontal stabilizer (THS).Note 1: Intertechnique vent float valve P/N L87-13-002 is embodied in production by AIRBUS modification 52110 or in service by AIRBUS Service Bulletin A330-28-3089. |\n| -------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ |\n| Requirement:   | Remove from service and replace the Intertechnique outboard vent float valves P/N L87-13-002.Note 2: DGAC AD F-2005-003 EASA Approval 2004-12543 dated 27 December 2004 refers.                                                                                                                                                      |\n| Compliance:    | Prior to the valve accumulating 24,500 flight cycles since first installation on the aeroplane.                                                                                                                                                                                                                                      |\n|                | This Airworthiness Directive becomes effective on 14 April 2005.                                                                                                                                                                                                                                                                     |\n| Background:    | The Directive introduces an operation life for the Intertechnique outboard vent float valve P/N L87-13-002.                                                                                                                                                                                                                          |\n\n![](image.001.png)  \nJames Coyne  \nDelegate of the Civil Aviation Safety Authority\n\n2 March 2005","sortOrder":0},{"sectionNumber":"AD/A330/47","sectionType":"part","heading":"AD/A330/47","content":"## AD/A330/47","sortOrder":1},{"sectionNumber":"Fuel - THS Fuel Tanks","sectionType":"part","heading":"Fuel - THS Fuel Tanks","content":"## Fuel - THS Fuel Tanks","sortOrder":2},{"sectionNumber":"4/2005","sectionType":"part","heading":"4/2005","content":"## 4/2005","sortOrder":3}],"analysis":{"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a standard airworthiness directive with a narrow, well-defined scope targeting a specific defective component. The scope remains tightly focused on the identified safety issue without expansion into broader operational requirements."},"complexity_factors":["Single, specific mechanical component targeted (one part number)","Clear, numeric compliance threshold (24,500 flight cycles)","No nested exceptions or conditional logic","Only 2 defined notes (Note 1 and Note 2) providing supplementary context","Straightforward applicability test (specific aircraft model + specific part number)","Single mandatory action (remove and replace)"],"plain_english_summary":"This Airworthiness Directive mandates that Airbus A330 operators remove and replace Intertechnique outboard vent float valves (pn L87-13-002) installed in the trimmable horizontal stabilizer before they reach 24,500 flight cycles. \n\nIt affects A330s with that valve fitted at manufacture or via service bulletin and prevents potential fuel-ventilation failures that could raise fire risk or compromise control, following DGAC/EASA findings."},"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":true,"description":"The directive introduces an operational life limit for Intertechnique vent float valve P/N L87-13-002 and mandates replacement before 24,500 flight cycles, whereas the Background states it \"introduces an operation life\" for that valve (Background; Requirement; Compliance), indicating a change from the prior absence of a defined life limit."},"complexity_factors":["Narrow applicability: only A330s fitted with Intertechnique vent float valve P/N L87-13-002 (Applicability).","Single, clear mandated action and hard threshold: remove and replace before 24,500 flight cycles (Requirement; Compliance).","Fixed effective date creates a compliance timeline for fleet planning (This Airworthiness Directive becomes effective on 14 April 2005).","Cross-references to production/service embodiment and external approvals (AIRBUS modification 52110; Service Bulletin A330-28-3089; DGAC AD F-2005-003; EASA Approval 2004-12543) which may affect how operators source replacement parts or justify compliance (Note 1; Note 2).","Operational/logistical burden on operators to schedule replacements and obtain parts, which may concentrate costs on affected operators (implicit from Requirement and Compliance)."],"plain_english_summary":"This Airworthiness Directive requires Airbus A330 operators who have an Intertechnique outboard vent float valve P/N L87-13-002 fitted in the trimmable horizontal stabilizer to remove and replace that valve before it reaches 24,500 flight cycles (Applicability; Requirement; Compliance). Operators must organise and pay for the replacement; the directive takes effect 14 April 2005 and formally introduces an operational life for that valve (Background)."},"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"}},"importantCases":[],"_links":{"self":"/api/acts/ad-a330-47-fuel-ths-fuel-tanks","history":"/api/acts/ad-a330-47-fuel-ths-fuel-tanks/history","analysis":"/api/acts/ad-a330-47-fuel-ths-fuel-tanks/analysis","conflicts":"/api/acts/ad-a330-47-fuel-ths-fuel-tanks/conflicts","importantCases":"/api/acts/ad-a330-47-fuel-ths-fuel-tanks/important-cases","documents":"/api/acts/ad-a330-47-fuel-ths-fuel-tanks/documents"}}