{"id":"F2006B01918","name":"AD/A320/27 - Nose Wheel Steering Control","slug":"ad-a320-27-nose-wheel-steering-control","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"repealed","isInForce":false,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41140,"registerId":"commonwealth-F2006B01918-current","compilationNumber":null,"startDate":"2026-04-01","status":"Repealed","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/A320/27 - Nose Wheel Steering Control","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 8/1992,Aircraft above 5700 kg,Airbus Industrie A319, A320 and A321 Series Aeroplanes,Nose Wheel Steering Control,27\ntitle: Airworthiness Directive - AD/A320/27 - Nose Wheel Steering Control\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/A320/27 Nose Wheel Steering Control 8/92\n\nApplicability: A320 series aircraft specified in Airbus Industrie Service Bulletin A320-32-1094 dated 25 March 1992.\n\n \n\nRequirement: Action in accordance with Airbus Industrie Service Bulletin A320-32-1094 and Messier-Bugatti A320 Service Bulletin 580-32-3087.\n\n \n\nNote: DGAC AD 92-117-25(B) dated 13 May 1992 refers.\n\n \n\nCompliance: Prior to 23 July 1993.\n\n \n\nBackground: Airbus Industrie have reported cases of nose wheels rotating to 90 on landing, causing significant damage to the wheel. This Directive requires updating of the Brake/Steering Control Unit functional software which will prevent occurrences of a similar nature.\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":1105},"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"The directive maintains a narrow, technical scope focused solely on the nose wheel steering software update for specific Airbus models. It addresses a discrete safety issue without expanding into broader operational or maintenance requirements."},"complexity_factors":["Incorporates external technical documents by reference rather than spelling out requirements directly","Relies on specialized aviation engineering terminology (Service Bulletins, Control Units)","Cross-reference to foreign aviation authority directive (French DGAC AD 92-117-25(B))"],"plain_english_summary":"**What this does:** This is a mandatory safety order for airlines operating specific Airbus aircraft (A319, A320, and A321 series).\n\n**Who it affects:** Airlines and operators of the affected Airbus models listed in Airbus Service Bulletin A320-32-1094.\n\n**What must be done:** Operators must update the software in the aircraft's Brake/Steering Control Unit before 23 July 1993. This involves following the technical instructions in two specific manufacturing bulletins—one from Airbus and one from Messier-Bugatti (the parts supplier).\n\n**Why it matters:** Without this software update, the nose wheels could rotate 90 degrees sideways during landing. This was already happening and causing significant damage to the wheels, creating safety risks and expensive repairs. The updated software prevents this dangerous malfunction."}},"importantCases":[],"_links":{"self":"/api/acts/ad-a320-27-nose-wheel-steering-control","history":"/api/acts/ad-a320-27-nose-wheel-steering-control/history","analysis":"/api/acts/ad-a320-27-nose-wheel-steering-control/analysis","conflicts":"/api/acts/ad-a320-27-nose-wheel-steering-control/conflicts","importantCases":"/api/acts/ad-a320-27-nose-wheel-steering-control/important-cases","documents":"/api/acts/ad-a320-27-nose-wheel-steering-control/documents"}}