RegNotify

EASA Regulations for General Electric GE90

19 airworthiness directives and regulations affecting General Electric GE90.

EASA AD US-2025-25-07

Turbine Engine - High-Pressure Turbine (HPT) Stage 1 and HPT Stage 2 Disks - Replacement

The Federal Aviation Administration's Airworthiness Directive 2025-25-07 addresses certain General Electric Company Model GE90-90B, GE90-94B, GE90-110B1, and GE90-115B engines. It requires replacement of specific high-pressure turbine (HPT) stage 1 and stage 2 disks suspected to contain iron inclusion in the powder metal material. This directive aims to prevent premature fracture and uncontained failure of these turbine disks.

Jan 9, 2026
Airworthiness DirectiveMaintenanceSafety MgmtGeneral Electric GE90

EASA AD US-2025-07-10

Engine Controls - Engine Indicating and Crew Alerting System - Dispatch Prohibition; Full Authority Digital Engine Control (FADEC) Integrated Circuit Microprocessor - Replacement; Electronic Engine Control FADEC - Software Upgrade

The document titled "Engine Controls - Engine Indicating and Crew Alerting System - Dispatch Prohibition; Full Authority Digital Engine Control (FADEC) Integrated Circuit Microprocessor - Replacement; Electronic Engine Control FADEC - Software Upgrade" is a final rule Airworthiness Directive issued by the FAA affecting General Electric Company Model GE90-110B1 and GE90-115B engines. It addresses unsafe conditions related to engine thrust control and FADEC microprocessor degradation by mandating operational restrictions, hardware replacements, and software upgrades.

May 15, 2025
Airworthiness DirectiveFlight OpsMaintenanceSafety MgmtGeneral Electric GE90

EASA AD US-2024-06-15

[Correction] Engine - Interstage High-Pressure Turbine Rotor Seal - Inspections

Correction to Airworthiness Directive 2024-06-15 issued by the Federal Aviation Administration (FAA) concerning General Electric Company Model GE90-110B1 and GE90-115B engines. The correction addresses typographical errors in the references to service information related to inspections of the interstage high-pressure turbine (HPT) rotor seal. The directive mandates ultrasonic inspections and eventual replacement of the affected rotor seals to prevent engine failure.

May 14, 2024
Airworthiness DirectiveMaintenanceSafety MgmtGeneral Electric GE90

EASA AD US-2023-26-07

Engine - High-Pressure Turbine Stage 1 and 2 Disks, Forward Rotor and Interstage Seals and Stages 7—9 Compressor Rotor Spools - Replacement

The Federal Aviation Administration's Airworthiness Directive 2023-26-07 mandates replacement of certain high-pressure turbine stage 1 and 2 disks, forward rotor seals, interstage seals, and stages 7-9 compressor rotor spools on General Electric Company GE90-90B, GE90-94B, GE90-110B1, and GE90-115B engines. This directive addresses parts manufactured with powder metal material suspected to contain iron inclusions that could lead to premature failure. The directive aims to ensure continued airworthiness and safety of affected engines.

Feb 22, 2024
Airworthiness DirectiveMaintenanceSafety MgmtGeneral Electric GE90

EASA AD US-2023-05-17

Engine - High Pressure Turbine Stage 2 Nozzles and Blades / Exhaust Centerbody - Inspection / Replacement

Airworthiness Directive 2023-05-17 is a final rule issued by the FAA addressing certain General Electric Company GE90-76B, GE90-85B, GE90-90B, and GE90-94B turbofan engines. It mandates inspections and replacement procedures for the high-pressure turbine (HPT) stage 2 nozzles and blades, as well as the exhaust centerbody, to prevent in-flight shutdowns caused by cracking and component liberation. This directive applies to engines installed on aircraft such as the Boeing 777-200ER.

May 8, 2023
Airworthiness DirectiveMaintenanceSafety MgmtGeneral Electric GE90Boeing 777-200ER

EASA AD US-2023-04-19

Engine - High Pressure Compressor Rotor Stage 7-9 Spool - Inspection

The Federal Aviation Administration's Airworthiness Directive 2023-04-19 addresses certain General Electric Company GE90-110B1 and GE90-115B turbofan engines. It mandates fluorescent penetrant inspections (FPI) on the high-pressure compressor rotor stage 7-9 spools due to incomplete inspections during overhaul. This directive targets specific spool part numbers and serial numbers identified in GE Service Bulletin 72-0905.

Mar 21, 2023
Airworthiness DirectiveMaintenanceSafety MgmtGeneral Electric GE90

EASA AD US-2022-23-09

Engine - High-Pressure Turbine Stage 1-2 Disks and Stage 7-9 Compressor Rotor Spools - Replacement

The Federal Aviation Administration's Airworthiness Directive 2022-23-09 addresses certain General Electric Company GE90-90B, GE90-94B, GE90-110B1, and GE90-115B turbofan engines. It mandates the replacement of specific high-pressure turbine (HPT) stage 1 and stage 2 disks, as well as stages 7-9 compressor rotor spools, due to manufacturing defects involving iron inclusion in powder metal materials. This directive aims to prevent potential uncontained engine failures and ensure continued airworthiness.

Jan 17, 2023
Airworthiness DirectiveMaintenanceSafety MgmtGeneral Electric GE90

EASA AD US-2022-18-06

Time Limits / Maintenance Checks — Airworthiness Limitations Section — Amendment; Engine - Interstage High Pressure Turbine Rotor Seals - Removal / Replacement

The Federal Aviation Administration's Airworthiness Directive 2022-18-06 addresses safety concerns for General Electric Company GE90-110B1, GE90-115B, GE90-76B, GE90-85B, GE90-90B, and GE90-94B model turbofan engines. It focuses on reducing life limits and requiring removal and replacement of certain interstage high-pressure turbine rotor seals due to detected manufacturing anomalies. This directive aims to prevent premature failure of critical engine parts and potential uncontained debris release.

Oct 24, 2022
Airworthiness DirectiveMaintenanceSafety MgmtGeneral Electric GE90

EASA AD US-2021-26-06

Engine - Transfer Gearbox Radial Gearshaft - Inspection / Replacement

Federal Register Volume 87, Number 7 Airworthiness Directive 2021-26-06 is a final rule issued by the FAA addressing certain General Electric Company GE90 model turbofan engines. It mandates inspection and possible replacement of the transfer gearbox (TGB) radial bevel gearshaft due to failures that caused two in-flight shutdowns. The directive applies to GE90-76B, GE90-85B, GE90-90B, GE90-94B, GE90-110B1, and GE90-115B engines with affected serial numbers.

Jan 21, 2022
Airworthiness DirectiveMaintenanceSafety MgmtGeneral Electric GE90

EASA AD US-2021-15-05

SUPERSEDED BY FAA AD 2025-07-10

FAA Airworthiness Directive 2021-15-05 is a final rule addressing all General Electric Company GE90-110B1 and GE90-115B turbofan engines. It mandates the replacement of the full authority digital engine control (FADEC) MN4 microprocessor due to an unsafe condition involving loss of engine thrust control that can cause uncommanded high thrust. This directive aims to enhance engine safety and prevent potential loss of airplane control.

Aug 11, 2021
Airworthiness DirectiveMaintenanceSafety MgmtGeneral Electric GE90

EASA AD US-2020-21-13

Engine - High-Pressure Turbine Rotor Stage 2 Disks and Rotating Compressor Discharge Pressure Seals - Replacement

The Federal Aviation Administration's Airworthiness Directive 2020-21-13 addresses certain General Electric Company GE90-110B1 and GE90-115B turbofan engines. It mandates replacement of specific high-pressure turbine rotor stage 2 disks and rotating compressor discharge pressure seals due to detected melt-related freckles that may reduce their life limits. This directive aims to prevent unsafe conditions that could lead to engine and aircraft damage.

Oct 14, 2020
Airworthiness DirectiveMaintenanceSafety MgmtGeneral Electric GE90

EASA AD US-2020-20-17

SUPERSEDED BY FAA AD 2025-07-10

FAA Airworthiness Directive 2020-20-17 is a final rule affecting all General Electric Company GE90-110B1 and GE90-115B turbofan engines installed on Boeing 777 aircraft. This directive addresses an unsafe condition caused by potential failure of the MN4 integrated circuit in the FADEC, which can lead to loss of engine thrust control and uncommanded high thrust. The AD requires operators to prohibit dispatch if certain engine status messages appear and mandates revisions to the minimum equipment list (MEL) to include these dispatch restrictions.

Oct 8, 2020
Airworthiness DirectiveFlight OpsMaintenanceSafety MgmtGeneral Electric GE90Boeing 777

EASA AD US-2020-18-14

Engine - High-Pressure Turbine Rotor Stage 2 Disk - Inspection / Replacement

The Federal Aviation Administration's Airworthiness Directive 2020-18-14 addresses all General Electric Company GE90-110B1 and GE90-115B turbofan engines equipped with a specific high-pressure turbine rotor stage 2 disk, part number 2505M73P03. This directive mandates ultrasonic inspection of the affected HPT rotor stage 2 disk to detect subsurface anomalies and requires replacement if defects are found. The directive aims to prevent potential engine failure and ensure continued airworthiness of affected engines.

Sep 18, 2020
Airworthiness DirectiveMaintenanceSafety MgmtGeneral Electric GE90

EASA AD US-2020-10-04

Engine - Interstage High-Pressure Turbine Rotor Seal - Inspection / Replacement

The document titled "Engine - Interstage High-Pressure Turbine Rotor Seal - Inspection / Replacement" is a Federal Aviation Administration (FAA) Airworthiness Directive (AD 2020-10-04) addressing General Electric Company GE90-110B1 and GE90-115B turbofan engines. It mandates inspections and potential replacement of the interstage high-pressure turbine (HPT) rotor seal to prevent unsafe conditions. The directive applies specifically to these engine models installed on Boeing 777-300ER aircraft.

May 13, 2020
Airworthiness DirectiveMaintenanceSafety MgmtGeneral Electric GE90Boeing 777-300ER

EASA AD US-2020-01-55

Engine - Interstage Seals - Replacement

The Federal Aviation Administration's Airworthiness Directive 2020-01-55 addresses certain General Electric Company GE90-110B1 and GE90-115B turbofan engines installed on Boeing 777-300ER aircraft. This directive mandates the removal from service of specific interstage seals, part numbers 2505M72P01 and 2448M33P01, due to a risk of uncontained high-pressure turbine failure. The directive aims to prevent engine damage and potential loss of the airplane caused by high-energy debris release.

Feb 17, 2020
Airworthiness DirectiveMaintenanceSafety MgmtGeneral Electric GE90Boeing 777-300ER

EASA AD US-2019-21-51

[Final Rule] Engine - High-Pressure Turbine Interstage Seal - Removal from Service

[Final Rule] Engine - High-Pressure Turbine Interstage Seal - Removal from Service is a Federal Aviation Administration (FAA) airworthiness directive addressing certain General Electric Company GE90-115B model turbofan engines. It mandates the removal from service of the Interstage Seal, part number 2505M72P01, installed on specific engine serial numbers due to a recent uncontained high-pressure turbine failure event. This directive aims to prevent potential engine and aircraft damage caused by high-energy debris release.

Nov 22, 2019
Airworthiness DirectiveMaintenanceSafety MgmtGeneral Electric GE90

EASA AD US-2018-20-22

Engine - Combustor Assembly - Removal / Replacement

The Federal Aviation Administration's Airworthiness Directive 2018-20-22 mandates the removal and replacement of certain combustor assemblies in General Electric GE90-110B1, GE90-113B, and GE90-115B turbofan engines. This directive addresses combustion cases with unapproved welds that compromise engine safety. It applies specifically to combustion cases with part numbers 2063M37G01 or 2082M19G04 and serial numbers listed in specified GE service bulletins.

Oct 30, 2018
Airworthiness DirectiveMaintenanceSafety MgmtGeneral Electric GE90

EASA AD US-2018-20-23

Engine - High Pressure Compressor Rotor Stage 2-5 Spools - Removal / Replacement

The Federal Aviation Administration's Airworthiness Directive 2018-20-23 addresses General Electric Company GE90-110B1 and GE90-115B turbofan engines equipped with certain high-pressure compressor (HPC) rotor stage 2-5 spools. This directive mandates the removal and replacement of specific HPC rotor stage 2-5 spools to prevent unsafe conditions. It applies to engines installed on aircraft operating in the United States.

Oct 30, 2018
Airworthiness DirectiveMaintenanceSafety MgmtGeneral Electric GE90

EASA AD US-2018-17-12

Engine - Full Authority Digital Engine Control - Software Upgrade Installation

The Federal Aviation Administration's Airworthiness Directive 2018-17-12 mandates an upgrade to the full authority digital engine control (FADEC) software for General Electric Company GE90-76B, GE90-77B, GE90-85B, GE90-90B, and GE90-94B turbofan engines. This directive addresses engines equipped with FADEC software version 9.3.2.4 or earlier. The upgrade aims to prevent engine damage caused by ice-crystal icing events that have led to engine stalls and shutdowns.

Sep 11, 2018
Airworthiness DirectiveMaintenanceSafety MgmtGeneral Electric GE90