{"id":"F2006B01888","name":"AD/A320/142 - Trust Reverser - Piston Rod Chrome Plating","slug":"ad-a320-142-trust-reverser-piston-rod-chrome-plating","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41084,"registerId":"commonwealth-F2006B01888-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"AIRWORTHINESS DIRECTIVE","sectionType":"part","heading":"AIRWORTHINESS DIRECTIVE","content":"# AIRWORTHINESS DIRECTIVE\n\n![](image.001.png)\n\n![](image.001.png)  \nFor the reasons set out in the background section, the CASA delegate whose signature appears below issues the following Airworthiness Directive (AD) under subregulation 39.1 (1) of CAR 1998. The AD requires that the action set out in the requirement section (being action that the delegate considers necessary to correct the unsafe condition) be taken in relation to the aircraft or aeronautical product mentioned in the applicability section: (a) in the circumstances mentioned in the requirement section; and (b) in accordance with the instructions set out in the requirement section; and (c) at the time mentioned in the compliance section.\n\nAirbus Industrie A319, A320 and A321 Series Aeroplanes","sortOrder":0},{"sectionNumber":"AD/A320/142 Trust Reverser - Piston Rod ","sectionType":"part","heading":"AD/A320/142 Trust Reverser - Piston Rod Chrome Plating 11/2002","content":"# AD/A320/142 Trust Reverser \\- Piston Rod Chrome Plating 11/2002\n\nApplicability: All A319, A320 and A321 series aeroplanes as identified in the requirement document.\n\nRequirement: Action per DGAC AD 2002-337(B)R1.\n\nNote: DGAC AD 2002-337(B) R1 refers.\n\nCompliance: Per the requirement document with a revised effective date of 31 October 2002.\n\nThis Airworthiness Directive becomes effective on 31 October 2002.\n\nBackground: Error during the repair and rigging of thrust reverser blocker door actuators has resulted in a situation of potential door deployment in- flight. This directive mandates the replacement of affected actuators.\n\n![](image.002.png)  \n\nJames Coyne\n\nDelegate of the Civil Aviation Safety Authority 24 September 2002\n\n![](image.001.png)  \n\nThe above AD is notified in the Commonwealth of Australia Gazette on 9 October 2002.","sortOrder":1}],"analysis":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"Scope has not been expanded or narrowed in the text supplied: the AD adopts DGAC AD 2002-337(B)R1 for all A319/A320/A321 aeroplanes as identified in the requirement document and sets a revised effective date (31 October 2002). The directive's mechanical scope remains replacement of the affected thrust-reverser blocker-door actuators."},"complexity_factors":["Cross-reference to an external DGAC document (DGAC AD 2002-337(B)R1) requires operators to obtain and follow a foreign-issued requirement document.","Applicability covers all A319/A320/A321 series aircraft, creating a broad population for inspection and parts replacement.","Identification of which actuators are 'affected' depends on repair/rigging history and records, adding tracing and inspection burden.","Compliance timing (revised effective date: 31 October 2002) imposes an administrative deadline for scheduling maintenance.","Regulatory authority: issued under CAR 1998 subregulation 39.1(1) by the CASA delegate, leaving limited administrative discretion but compulsory action for operators."],"plain_english_summary":"This Airworthiness Directive requires replacement of thrust-reverser blocker-door actuators on Airbus A319, A320 and A321 aeroplanes where a repair or rigging error could allow door deployment in flight. It implements and directs operators to follow DGAC AD 2002-337(B)R1 and takes effect 31 October 2002. The directive affects operators and maintenance organisations for the listed types, who must identify affected actuators and carry out the mandated replacements under the referenced requirement document."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This AD maintains its original narrow scope: addressing a specific mechanical defect in thrust reverser actuators on specific Airbus models. It does not expand beyond this safety-critical repair mandate."},"complexity_factors":["Very short document (under 300 words)","Only 1 substantive requirement: follow the referenced French DGAC directive","No defined terms section — relies entirely on external technical document","Simple structure: Applicability → Requirement → Compliance → Background","Single condition (all aircraft of specified models affected, no exceptions or nested logic)","No cross-references to Australian legislation beyond the enabling regulation (CAR 1998 subreg 39.1(1))"],"plain_english_summary":"This mandatory CASA Airworthiness Directive requires operators of Airbus A319/A320/A321 aircraft in Australia to replace specific thrust‑reverser actuators. A chrome‑plating defect on piston rods could allow reverser doors to deploy in flight, so the replacements must be done per the referenced DGAC service instructions by 31 October 2002.\n\nCompliance is legally required unless special approval is granted."},"flash_summary_failed":{"failed":true,"reason":"A positive credit balance is required for all requests, including BYOK, so fallback providers remain available. Add credits at https://vercel.com/d?to=%2F%5Bteam%5D%2F%7E%2Fai%3Fmodal%3Dtop-up to continue.","source":"analysis-cron"}},"importantCases":[],"_links":{"self":"/api/acts/ad-a320-142-trust-reverser-piston-rod-chrome-plating","history":"/api/acts/ad-a320-142-trust-reverser-piston-rod-chrome-plating/history","analysis":"/api/acts/ad-a320-142-trust-reverser-piston-rod-chrome-plating/analysis","conflicts":"/api/acts/ad-a320-142-trust-reverser-piston-rod-chrome-plating/conflicts","importantCases":"/api/acts/ad-a320-142-trust-reverser-piston-rod-chrome-plating/important-cases","documents":"/api/acts/ad-a320-142-trust-reverser-piston-rod-chrome-plating/documents"}}