{"id":"F2006B01909","name":"AD/A320/19 - Hydraulic Fire Shut-Off Valve","slug":"ad-a320-19-hydraulic-fire-shut-off-valve","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41131,"registerId":"commonwealth-F2006B01909-current","compilationNumber":null,"startDate":"2026-04-01","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/A320/19 - Hydraulic Fire Shut-Off Valve","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)  \nAirbus Industrie A319, A320 and A321 Series Aeroplanes\n\nAD/A320/19 Hydraulic Fire Shut-Off Valve 10/91\n\nApplicability: Airbus A320, all models.\n\nRequirement: Inspect and/or modify subject aeroplanes in accordance with French Airworthiness Directive (AD) 90-152-019 (B).\n\nNote: French AD 90-152-019(B) refers to Airbus Industrie All Operators Telex Ref AOT 29-04 1 June 1991 Revision 1.\n\nCompliance: As specified in the Requirement Document but with a revised effectivity date of 3 October 1991 for Australian registered aircraft.\n\nBackground: This Directive has been issued in order to prevent a possible internal short circuit of some suspect hydraulic fire shut-off valve actuators. The internal short circuit could lead to power supply circuit breaker popping out and in consequence the valve failing to close.","sortOrder":0}],"analysis":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1411},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is the original issuance of the directive, focused narrowly on a specific hydraulic valve defect. The scope remains limited to the original safety issue regarding fire shut-off valve actuators."},"complexity_factors":["Short single-requirement directive with no subsections or conditional logic","Relies entirely on external reference documents (French AD and Airbus Telex)","Only one applicability criterion (Airbus A320 all models)","No defined terms section or interpretive provisions"],"plain_english_summary":"**What this means for aircraft owners:**\n\nIf you operate an Australian-registered **Airbus A320**, you must inspect or modify the **hydraulic fire shut-off valves** on your aircraft.\n\n**Why this matters:**\nSome valves have a design flaw where internal electrical short circuits can trip the circuit breaker. If this happens, the valve might fail to close during a fire. A valve that won't close means hydraulic fluid keeps flowing, potentially feeding the fire instead of shutting it off.\n\n**What you need to do:**\n- Follow the instructions in **French Airworthiness Directive 90-152-019(B)** (which references an Airbus technical notice from June 1991)\n- Complete the work by **3 October 1991** (this is the Australian-specific deadline)\n\n**In short:** Check and fix your fire safety valves before the deadline, following the French technical instructions, or your aircraft isn't legally airworthy."}},"importantCases":[],"_links":{"self":"/api/acts/ad-a320-19-hydraulic-fire-shut-off-valve","history":"/api/acts/ad-a320-19-hydraulic-fire-shut-off-valve/history","analysis":"/api/acts/ad-a320-19-hydraulic-fire-shut-off-valve/analysis","conflicts":"/api/acts/ad-a320-19-hydraulic-fire-shut-off-valve/conflicts","importantCases":"/api/acts/ad-a320-19-hydraulic-fire-shut-off-valve/important-cases","documents":"/api/acts/ad-a320-19-hydraulic-fire-shut-off-valve/documents"}}