The FAA proposes to supersede Airworthiness Directive AD 2020-20-17 and AD 2021-15-05 which apply to all General Electric Company GE Model GE90-110B1 and GE90-115B engines. AD 2020-20-17 prohibits dispatch of an airplane if certain status messages are displayed on the engine indicating and crew alerting system EICAS and if certain conditions are present and as terminating action requires revision of the existing FAA-approved minimum equipment list MEL by incorporating the dispatch restrictions into the MEL. AD 2021-15-05 requires initial and repetitive replacement of the full authority digital engine control FADEC integrated circuit MN4 microprocessor. Since the FAA issued AD 2020-20-17 and AD 2021-15-05 the manufacturer has developed a software revision for the electronic engine control EEC FADEC that further mitigates the unsafe condition. This proposed AD would retain all the actions of AD 2020-20-17 and AD 2021-15-05 and it would also require upgrading the EEC FADEC software to an EEC FADEC software version eligible for installation as a terminating action. The FAA is proposing this AD to address the unsafe condition on these products.