Engine Fuel & Control — Electronic Engine Control Software — Update
- Published
- Effective
- Deadline
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators of Airbus A380-841 and A380-842 aeroplanes with affected EEC software must install the updated software within 12 months of 31 December 2021, following the instructions in Airbus Service Bulletin A380-73-8024. Installation of older software is prohibited after the compliance deadline. Any newly installed engines or EEC units with affected software must be updated before first flight after installation.
Summary
EASA Airworthiness Directive 2021-0284 is an airworthiness directive affecting Airbus A380-841 and A380-842 aeroplanes equipped with Rolls-Royce Trent 900 engines. It addresses the Electronic Engine Control (EEC) software, specifically requiring an update to a newer software standard to prevent engine thrust control loss. The directive applies to all manufacturer serial numbers of these aircraft models.
What changed
This new directive mandates the installation of updated EEC software standard 12.4 (part number RRY24-0124-380A or later) to replace affected software versions (P/N RRY23-0123-380A or earlier). It introduces a service bulletin for in-service modification and prohibits installation of the older software after the compliance deadline. The directive also allows installation of engines or EEC units with affected software only if updated before first operation.
Why it matters
This directive is critical for aviation professionals because it addresses a safety risk involving potential uncommanded thrust reduction and multiple engine loss of thrust control due to freezing in the EEC unit. Compliance ensures continued airworthiness and operational safety of Airbus A380 aircraft with Trent 900 engines. Operators, maintenance organizations, and compliance teams must update software to avoid operational restrictions and maintain regulatory compliance.
More for Airbus A380
All 182- EASA PAD 26-125Pneumatic – Pylon / Wing Interface Bleed Duct and Fuel Pipe – Inspection / Modification / ReplacementOct 15, 2026
- EASA AD US-2026-20-12Turbine - High-Pressure Turbine Interstage Seal - ReplacementOct 12, 2026
- EASA PAD 26-118Fire Protection – Fire-extinguishing Pipes – ReplacementSep 29, 2026
- EASA AD 2026-0181Power Plant – Air Intake Cowl – Nacelle Anti-ice Duct Female Socket – InspectionSep 18, 2026
- EASA AD 2016-0193R2
Get the next one by email
New ADs and bulletins for Airbus A380, summarized like this page, every Monday.