{"id":"F2006B01917","name":"AD/A320/26 Amdt 1 - Fuel Quantity Probes","slug":"ad-a320-26-amdt-1-fuel-quantity-probes","collection":"legislative_instrument","jurisdiction":"commonwealth","status":"in_force","isInForce":true,"actNumber":null,"makingDate":null,"administeringDepartment":null,"currentVersion":{"id":41139,"registerId":"commonwealth-F2006B01917-current","compilationNumber":null,"startDate":"2026-04-01","status":"InForce","reasons":null,"registeredAt":null},"sections":[{"sectionNumber":"1","sectionType":"section","heading":"AD/A320/26 Amdt 1 - Fuel Quantity Probes","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 7/1992,Aircraft above 5700 kg,Airbus Industrie A319, A320 and A321 Series Aeroplanes,Fuel Quantity Probes,26 Amdt 1\ntitle: Airworthiness Directive - AD/A320/26 Amdt 1 - Fuel Quantity Probes\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/A320/26\n\nAmdt 1\n\n\nFuel Quantity Probes 7/92\n\n \n\nApplicability: All A320 series aircraft without Airbus Industrie modifications 22647 and 22855.\n\n \n\nRequirement: Action in accordance with Airbus Industrie Service Bulletin A320-28-1040 Revision 1 dated 3 April 1992.\n\n \n\nNote: DGAC AD 92-048-024(B) refers.\n\n \n\nCompliance: Prior to 21 February 1993.\n\n \n\nBackground: This Directive requires action to prevent arcing between fuel quantity probes and fuel tank structures in the event of a lightning strike.\n\n \n\nAmendment 1 is issued to reflect a revision to the Requirement Document.\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":{"flash_summary":{"complexity_score":3,"scope_assessment":{"changed":false,"description":"Amendment 1 reflects a revision to the Requirement Document (Airbus SB A320‑28‑1040 Rev 1 dated 3 April 1992) without altering the AD's applicability, required action or compliance date. The directive continues to apply only to A320‑series aircraft not carrying Airbus mods 22647 or 22855 and keeps the same compliance deadline."},"complexity_factors":["Relies on an external technical document (Airbus Service Bulletin A320‑28‑1040 Rev 1) to define the required work","Applicability limited to aircraft lacking specific Airbus modifications (22647 and 22855) — requires fleet‑by‑aircraft checks","Safety‑critical modification to fuel‑tank/probe interface requires specialised maintenance skills and parts","Fixed compliance deadline (21 February 1993) creates operational scheduling and potential downtime costs","Amendment updates the Requirement Document rather than setting new technical standards, so regulatory discretion is limited"],"plain_english_summary":"This directive requires operators of Airbus A319/A320/A321 aeroplanes (those not fitted with Airbus modifications 22647 or 22855) to carry out the modification and/or inspections set out in Airbus Service Bulletin A320‑28‑1040 Revision 1 (dated 3 April 1992). Compliance had to be completed before 21 February 1993. The stated aim is to prevent arcing between fuel‑quantity probes and fuel‑tank structure during a lightning strike. Owners/operators pay for and schedule the work; CASA enforces the deadline."},"kimi_summary":{"content_quality":"ok","complexity_score":2,"scope_assessment":{"changed":false,"description":"This is a narrow, technical safety directive focused on a specific airworthiness issue (lightning protection for fuel probes). The amendment merely updates the referenced technical document revision; it does not expand the scope beyond the original safety purpose."},"complexity_factors":["Extremely short document (under 200 words)","Only 2 defined applicability criteria (aircraft series and specific modification exclusions)","Single requirement referencing an external technical document (Service Bulletin)","No nested conditions, exceptions, or cross-references to other legislation","Straightforward compliance deadline with no alternative methods or escalations","Amendment serves only to update referenced document revision"],"plain_english_summary":"This CASA Airworthiness Directive mandates a safety modification on certain Airbus A319/A320/A321 aircraft to eliminate a lightning-induced risk: electrical arcing between fuel quantity probes and the fuel tank structure that could ignite fuel vapour. It applies to operators whose aircraft lack the referenced factory modifications and requires compliance with the Airbus service bulletin; it’s aimed at preventing catastrophic fuel-tank ignition."}},"importantCases":[],"_links":{"self":"/api/acts/ad-a320-26-amdt-1-fuel-quantity-probes","history":"/api/acts/ad-a320-26-amdt-1-fuel-quantity-probes/history","analysis":"/api/acts/ad-a320-26-amdt-1-fuel-quantity-probes/analysis","conflicts":"/api/acts/ad-a320-26-amdt-1-fuel-quantity-probes/conflicts","importantCases":"/api/acts/ad-a320-26-amdt-1-fuel-quantity-probes/important-cases","documents":"/api/acts/ad-a320-26-amdt-1-fuel-quantity-probes/documents"}}