{"id":"F2006B01945","name":"AD/A320/57 - Centre Wing, Reinforcement of Pressure Floor Fittings","slug":"ad-a320-57-centre-wing-reinforcement-of-pressure-floor-fittings","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41167,"registerId":"commonwealth-F2006B01945-current","compilationNumber":null,"startDate":"2026-04-01","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/A320/57 - Centre Wing, Reinforcement of Pressure Floor Fittings","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 9/1995,Aircraft above 5700 kg,Airbus Industrie A319, A320 and A321 Series Aeroplanes,Centre Wing, Reinforcement of Pressure Floor Fittings,57\ntitle: Airworthiness Directive - AD/A320/57 - Centre Wing, Reinforcement of Pressure Floor Fittings\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\n# AD/A320/57 Centre Wing, Reinforcement of Pressure Floor Fittings\n\nApplicability: As specified in the Requirement Document.\n\n \n\nRequirement: Action in accordance with Airbus Industrie SB A320-57-1013 Rev. 1.\n\n \n\nNote: DGAC AD 95-098-066(B) refers.\n\n \n\nCompliance: Prior to attaining 16 000 flight cycles.\n\n# 9/95\n\n \n\nBackground: This Directive is issue to prevent initiation and propagation of damage discovered during fatigue testing.\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":{"kimi_summary":{"_metrics":{"model":"kimi-k2.5","source":"moonshot-batch","completionTokens":1932},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This appears to be the original directive (marked Issue 9/95) maintaining its narrow, specific scope focused solely on the structural reinforcement of centre wing pressure floor fittings for the Airbus A320 family aircraft series."},"complexity_factors":["Incorporation by reference of external technical standard (Airbus Service Bulletin A320-57-1013 Rev. 1) without reproducing the detailed steps","Single, clear compliance threshold (16,000 flight cycles)","Technical aviation terminology ('flight cycles', 'pressure floor fittings', 'Service Bulletin') requires domain knowledge to interpret fully","Minimal conditional logic or exceptions"],"plain_english_summary":"**What this is:** A mandatory safety order (called an Airworthiness Directive) issued by the Civil Aviation Safety Authority (CASA) for specific Airbus aircraft operating in Australia.\n\n**Who it affects:** Owners and operators of **Airbus A319, A320, and A321** series aircraft (those above 5,700 kg operating weight).\n\n**What it requires:**\n*   **The fix:** Reinforcement of structural fittings in the centre wing area (specifically the \"pressure floor fittings\"—the hardware that helps maintain cabin pressure and wing structure).\n*   **How:** Follow the technical instructions in **Airbus Service Bulletin A320-57-1013 Revision 1** (a manufacturer-issued repair manual).\n*   **When:** Before the aircraft completes **16,000 flight cycles** (one flight cycle = one takeoff and landing).\n\n**Why it matters:** Fatigue testing found that these fittings could develop cracks or damage over time. This directive prevents structural failures that could affect airworthiness and safety. It aligns with a similar French aviation safety order (DGAC AD 95-098-066(B))."}},"importantCases":[],"_links":{"self":"/api/acts/ad-a320-57-centre-wing-reinforcement-of-pressure-floor-fittings","history":"/api/acts/ad-a320-57-centre-wing-reinforcement-of-pressure-floor-fittings/history","analysis":"/api/acts/ad-a320-57-centre-wing-reinforcement-of-pressure-floor-fittings/analysis","conflicts":"/api/acts/ad-a320-57-centre-wing-reinforcement-of-pressure-floor-fittings/conflicts","importantCases":"/api/acts/ad-a320-57-centre-wing-reinforcement-of-pressure-floor-fittings/important-cases","documents":"/api/acts/ad-a320-57-centre-wing-reinforcement-of-pressure-floor-fittings/documents"}}