{"id":"F2006B01944","name":"AD/A320/56 - Centre Wing, Pressurised Floor Fittings at Frame 36","slug":"ad-a320-56-centre-wing-pressurised-floor-fittings-at-frame-36","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41166,"registerId":"commonwealth-F2006B01944-current","compilationNumber":null,"startDate":"2026-04-01","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/A320/56 - Centre Wing, Pressurised Floor Fittings at Frame 36","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, Pressurised Floor Fittings at Frame 36,56\ntitle: Airworthiness Directive - AD/A320/56 - Centre Wing, Pressurised Floor Fittings at Frame 36\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/A320/56 Centre Wing, Pressurised Floor Fittings at Frame 36 9/95\n\nApplicability: As specified in the Requirement Document.\n\n \n\nRequirement: Action in accordance with Airbus Industrie SB A320-57-1028.\n\n \n\nNote: DGAC AD 95-099-067(B) refers.\n\n \n\nCompliance: Prior to attaining 16 000 flight cycles; thereafter at the intervals specified in the Requirement Document.\n\n \n\nNote: Full incorporation of Airbus Industrie SB A320-57-1029 terminates this Directive.\n\n \n\nBackground: This Directive is issued to detect and/or prevent any damage related to structural fatigue.\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":1647},"content_quality":"ok","complexity_score":3,"scope_assessment":{"changed":false,"description":"This AD remains targeted at its original purpose: addressing fatigue in centre wing floor fittings of specific Airbus models. It has not expanded beyond this specific airworthiness issue."},"complexity_factors":["Defers all technical requirements to an external manufacturer document (Airbus SB A320-57-1028)","Compliance timing involves conditional logic (pre-16,000 cycles, then recurring intervals)","Technical terminology requires aviation engineering knowledge to interpret (Frame 36, pressurised floor fittings, flight cycles)"],"plain_english_summary":"This Airworthiness Directive (AD) mandates safety inspections for specific **Airbus A319, A320, and A321 aircraft** to address potential structural fatigue in the centre wing area.\n\n**What it requires:**\nOperators must inspect and potentially repair the **pressurised floor fittings at Frame 36** (a structural component in the middle of the aircraft wing/body junction) following the technical procedures in **Airbus Service Bulletin A320-57-1028**.\n\n**When it must be done:**\n*   **Initial deadline:** Before the aircraft reaches 16,000 flight cycles (one takeoff and landing counts as one cycle)\n*   **Ongoing:** Repeated at intervals specified in the Service Bulletin\n\n**Why it matters:**\nThe directive prevents catastrophic structural failure by detecting fatigue damage (cracking from repeated pressurisation cycles) early.\n\n**How it ends:**\nIf operators fully implement **Service Bulletin A320-57-1029** (likely a permanent design fix), this recurring inspection requirement no longer applies."}},"importantCases":[],"_links":{"self":"/api/acts/ad-a320-56-centre-wing-pressurised-floor-fittings-at-frame-36","history":"/api/acts/ad-a320-56-centre-wing-pressurised-floor-fittings-at-frame-36/history","analysis":"/api/acts/ad-a320-56-centre-wing-pressurised-floor-fittings-at-frame-36/analysis","conflicts":"/api/acts/ad-a320-56-centre-wing-pressurised-floor-fittings-at-frame-36/conflicts","importantCases":"/api/acts/ad-a320-56-centre-wing-pressurised-floor-fittings-at-frame-36/important-cases","documents":"/api/acts/ad-a320-56-centre-wing-pressurised-floor-fittings-at-frame-36/documents"}}