{"id":"F2006B01877","name":"AD/A320/13 - Passenger Oxygen","slug":"ad-a320-13-passenger-oxygen","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41073,"registerId":"commonwealth-F2006B01877-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/A320/13 - Passenger Oxygen","content":"---\nmeta-content-style-type: text/css\nmeta-content-type: application/xhtml+xml; charset=utf-8\nmeta-description: CASA Airworthiness Directive\nmeta-generator: Aspose.Words for .NET 22.10.0\nmeta-keywords: Issue 10/1990,Aircraft above 5700 kg,Airbus Industrie A319, A320 and A321 Series Aeroplanes,Passenger Oxygen,13\ntitle: Airworthiness Directive - AD/A320/13 - Passenger Oxygen\n---\n\n?xml version=\"1.0\" encoding=\"utf-8\" standalone=\"no\"?>\n\nCOMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY\n\nSCHEDULE OF AIRWORTHINESS DIRECTIVES\n\n \n\n![](image.001.png)  Airbus Industrie A319, A320 and A321 Series Aeroplanes\n\n \n\nAD/A320/13 Passenger Oxygen 10/90\n\nApplicability: All models A320.\n\n \n\nRequirement: Action in accordance with Airbus Industrie SB A320-35-1002 including change notice 0A or later.\n\n \n\nNote: DGAC AD 90-108-012(B) refers.\n\n \n\nCompliance: Within 100 hours’ time in service after 31 October 1990. Background: To prevent the failure of the passenger oxygen doors to open.\n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n\n \n","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"The AD sets a targeted, mandatory corrective action for all A320 models to address the stated risk (passenger oxygen doors failing to open). It does not expand or narrow that stated purpose within the text provided; technical implementation is delegated to the referenced Airbus service bulletin (including later change notices), but the AD’s applicability and compliance timeframe are explicit and unchanged in this instrument."},"complexity_factors":["Short, single-issue directive focused on one system (passenger oxygen doors).","References an external technical document (Airbus SB A320-35-1002), requiring access to and reliance on that bulletin for details.","Fixed, short compliance deadline (100 hours TIS after 31 October 1990) increases operational coordination complexity.","Applicability across all A320 models broadens the impacted population but does not add textual complexity.","Minimal statutory text with no layered legal exceptions or multiple operative clauses."],"plain_english_summary":"What this directive does (mechanics)\n\n- This is an Airworthiness Directive (AD) issued under the Civil Aviation Regulations requiring operators of Airbus A320 family aircraft to carry out a specific maintenance action. (See: \"Applicability: All models A320\"; \"Requirement: Action in accordance with Airbus Industrie SB A320-35-1002 including change notice 0A or later.\")\n- The AD makes compliance mandatory within a fixed short timeframe: \"Within 100 hours’ time in service after 31 October 1990.\" (See: \"Compliance.\")\n\nWho it affects and who decides\n\n- Affected parties: owners and operators of all A320 model aeroplanes (\"Applicability\").\n- Decision and technical method: the Civil Aviation Safety Authority issues the AD, but the actionable technical steps are specified by the Airbus service bulletin it references (Airbus Industrie SB A320-35-1002, including change notice 0A or later). (See: \"Requirement.\")\n\nWhy the AD exists (stated purpose)\n\n- The background statement given by the AD is: \"To prevent the failure of the passenger oxygen doors to open.\" (See: \"Background.\")\n\nPractical effects, incentives and costs\n\n- Who pays and who acts: The operator/owner must arrange and pay for the work required by the Airbus service bulletin because the AD makes compliance mandatory. (Source: \"Requirement\" and \"Applicability\".)\n- Compliance burden and timing: The work must be completed within a short operational window (100 flight hours after 31 October 1990). That creates a coordination cost: scheduling maintenance downtime, labour and possible parts acquisition in that period. (Source: \"Compliance.\")\n- Technical discretion and update mechanism: The AD prescribes the manufacturer’s service bulletin as the required technical solution and accepts later change notices (\"including change notice 0A or later\"), which means Airbus can update the technical method and the AD will reference those updates. This shifts detailed technical specification to the manufacturer while CASA retains the regulatory requirement. (Source: \"Requirement.\")\n\nTrade-offs, risks and implementation notes\n\n- Safety benefit asserted: The AD’s stated aim is to prevent passenger oxygen doors failing to open; that is the explicit safety target. (Source: \"Background.\")\n- Opportunity cost and operational impact: Operators must prioritise this mandated work within the short compliance window, which may displace other scheduled maintenance or operations until the work is performed. (Source: \"Compliance.\")\n- Dependence on external document: The AD does not itself set out technical steps; it requires following a separate Airbus service bulletin. That creates reliance on availability and clarity of that bulletin and any parts or tooling it calls for. (Source: \"Requirement.\")\n- Regulatory clarity: Applicability is broad (all A320 models) and the AD cites a foreign authority directive (DGAC AD 90-108-012(B)) in the Note, indicating alignment with that authority’s action but not changing the AD’s mandatory requirements. (Source: \"Applicability\" and \"Note.\")\n\nNet behavioural effect\n\n- Operators must inspect/modify/repair passenger oxygen door systems per the Airbus service bulletin within the stated timeframe. The directive converts a manufacturer technical instruction into a regulatory obligation, creating a short-term maintenance requirement that operators must fund and schedule.\n"},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, time-bound safety directive. It has not grown beyond its original purpose of mandating a specific fix to the passenger oxygen system on A320 aircraft. The scope remains precisely as intended: a targeted airworthiness requirement for a specific aircraft type and specific defect."},"complexity_factors":["Very short document (approximately 150 words)","Only 1 defined term implicitly ('time in service')","Single, unambiguous compliance requirement","No nested exceptions or conditional logic","No cross-references to other legislation (only references to manufacturer service bulletin and related foreign AD)","Clear applicability statement ('All models A320')","Single deadline with straightforward calculation method"],"plain_english_summary":"This is an **Airworthiness Directive (AD)** issued by Australia's Civil Aviation Safety Authority (CASA). It applies to **Airbus A320 aircraft** and requires operators to fix a safety problem with the **passenger oxygen system**.\n\n**What it does:**\n- Requires aircraft owners/operators to follow specific instructions from Airbus (Service Bulletin A320-35-1002) to prevent passenger oxygen compartment doors from failing to open in an emergency.\n\n**Who it affects:**\n- Anyone operating Airbus A320 aircraft in Australia.\n\n**Why it matters:**\n- If the oxygen doors don't open during cabin depressurisation, passengers won't get emergency oxygen. This could cause hypoxia (lack of oxygen) and potentially death at high altitudes.\n\n**Key deadlines:**\n- The fix must be done within **100 flight hours** after 31 October 1990.\n\n**Note:** This references a French aviation safety directive (DGAC AD 90-108-012(B)), showing international coordination on this safety issue."}},"importantCases":[],"_links":{"self":"/api/acts/ad-a320-13-passenger-oxygen","history":"/api/acts/ad-a320-13-passenger-oxygen/history","analysis":"/api/acts/ad-a320-13-passenger-oxygen/analysis","conflicts":"/api/acts/ad-a320-13-passenger-oxygen/conflicts","importantCases":"/api/acts/ad-a320-13-passenger-oxygen/important-cases","documents":"/api/acts/ad-a320-13-passenger-oxygen/documents"}}