EASA AD 2025-0092
Flight Controls — Maintenance and Avionics Interface Computer Software — Modification / Airplane Flight Manual — Amendment
Summary
EASA Airworthiness Directive 2025-0092 is an airworthiness directive affecting Dassault Aviation Falcon 7X aeroplanes that have embodied modification M1000, also known as Falcon 8X. This directive mandates modifications to the flight controls maintenance and avionics interface computer software, along with amendments to the Airplane Flight Manual. The directive aims to enhance safety by addressing issues related to the inboard slats extension system during landing.
What Changed
EASA Airworthiness Directive 2025-0092 requires upgrading the Maintenance and Avionics Interface Computer (MAIC) software and amending the Airplane Flight Manual to restore crew awareness of inboard slat configurations in case of failure. It introduces Dassault modification M2138 and associated service bulletin 7X-637 for retrofit installation. The directive also supersedes interim measures introduced by Emergency AD 2022-0161-E by providing a permanent software and procedural update.
Why It Matters
This directive is critical for aviation professionals because it addresses a safety risk where failed inboard slat extension during landing was not indicated to flight crews, potentially reducing lift and control. Operators and maintenance organizations must ensure compliance to maintain airworthiness and avoid operational restrictions. Compliance ensures that flight crews receive accurate alerts, improving flight safety during critical phases such as approach and landing.
What To Do
Operators of affected Falcon 7X aeroplanes must upgrade the MAIC software within 12 months from 7 May 2025, following Dassault Service Bulletin 7X-637 instructions. Prior to software upgrade, aircraft without modifications M1968 and M1655 must be modified per Service Bulletins 7X-509 or 7X-412. Additionally, the Airplane Flight Manual must be amended before the next flight after modification to incorporate the updated procedures and inform flight crews accordingly.