{"id":"F2006B01972","name":"AD/A320/83 - Slats-Flaps Control Computer","slug":"ad-a320-83-slats-flaps-control-computer","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41194,"registerId":"commonwealth-F2006B01972-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/A320/83 - Slats-Flaps Control Computer","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/A320/83 Slats-Flaps Control Computer 7/97\n\nApplicability: All Airbus Industrie A320 models \\-111,-211, \\-212, \\-214, \\-231, \\-232, \\-233 not having Airbus Industrie modification No. 25094 or Airbus Industrie Service Bulletin A320- 27-1096 dated 14 March 1996 incorporated.\n\nAll Airbus Industrie A321 models -111,-112 and -131 not having Airbus Industrie modification No. 25360 or Airbus Industrie Service Bulletin A320-27-1103 dated 14 June 1996 incorporated.\n\nRequirement: Unless previously incorporated, modify the slats-flaps control computer standard in accordance with Airbus Industrie Service Bulletin A320-27-1096 for A320 or Airbus Industrie Service Bulletin A320-27-1103 for A321.\n\nNote: DGAC AD 97-085-099(B) refers.\n\nCompliance: Prior to 19 June 1999.\n\nThis Airworthiness Directive becomes effective on 19 June 1997.\n\nBackground: The action mandated by this AD is to avoid a possible uncommanded retraction of slats and/or flaps due to command sensor unit malfunction.","sortOrder":0}],"analysis":{"flash_summary":{"complexity_score":2,"scope_assessment":{"changed":false,"description":"Scope is consistent with the stated purpose: it applies only to the listed A320/A321 variants that have not already incorporated the specified Airbus modifications/service bulletins and requires those aircraft to be modified to address the risk of uncommanded slat/flap retraction. The instrument does not broaden applicability beyond the identified models or require additional unrelated actions."},"complexity_factors":["Narrow applicability limited to specific A320 and A321 model suffixes","Single, prescriptive technical remedy via two named Airbus Service Bulletins","Clear compliance deadline (19 June 1999)","Operator must verify whether the Airbus modification or service bulletin is already incorporated ('unless previously incorporated')","Cross-reference to a foreign authority AD (DGAC AD 97-085-099(B)) but no additional alternative compliance paths"],"plain_english_summary":"Requires modification of the slats–flaps control computer on specified Airbus A320 and A321 variants by incorporation of Airbus Service Bulletin A320‑27‑1096 (A320) or A320‑27‑1103 (A321). CASA mandates the change to prevent possible uncommanded slat/flap retraction caused by a command sensor unit malfunction. Affected aircraft operators must arrange and pay for the modification unless the specified Airbus modification or service bulletin has already been incorporated; the compliance deadline is 19 June 1999."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a discrete, targeted safety directive addressing a specific technical defect in specific aircraft models. The scope remains tightly focused on the original safety issue (uncommanded slats/flaps retraction) and has not expanded beyond this purpose."},"complexity_factors":["Very short document (approximately 200 words)","Only 2 defined applicability categories (A320 and A321 models with specific exclusions)","Single, clear requirement with explicit reference to external technical documents (Airbus Service Bulletins)","No nested conditional logic or exceptions beyond the initial applicability exclusions","Straightforward compliance deadline with no phased or conditional timelines","Minimal cross-referencing (only one reference to French aviation authority directive DGAC AD 97-085-099(B))"],"plain_english_summary":"This Airworthiness Directive from CASA requires owners/operators of certain Airbus A320/A321 aircraft in Australia (those not already modified per specified 1996 updates) to upgrade the slat/flap control computer per Airbus service instructions. It addresses a sensor fault that can cause unexpected slat/flap retraction and loss of control, especially at takeoff/landing. Effective 19 June 1997; compliance by 19 June 1999."}},"importantCases":[],"_links":{"self":"/api/acts/ad-a320-83-slats-flaps-control-computer","history":"/api/acts/ad-a320-83-slats-flaps-control-computer/history","analysis":"/api/acts/ad-a320-83-slats-flaps-control-computer/analysis","conflicts":"/api/acts/ad-a320-83-slats-flaps-control-computer/conflicts","importantCases":"/api/acts/ad-a320-83-slats-flaps-control-computer/important-cases","documents":"/api/acts/ad-a320-83-slats-flaps-control-computer/documents"}}