Superseded. This AD was superseded by AD 2025-07-10. Verify which one applies to your serial and effectivity before any maintenance action.
AD 2020-20-17
Effective 10/23/2020 · Published 10/08/2020
Airworthiness Directives; General Electric Company Turbofan Engines
Summary
The FAA is adopting a new airworthiness directive (AD) for all General Electric Company GE90-110B1 and GE90-115B model turbofan engines. This AD was prompted by an in-service occurrence of loss of engine thrust control resulting in uncommanded high thrust. This AD prohibits dispatch of an airplane if certain status messages are displayed on the engine indicating and crew alerting system (EICAS) and if certain condit…