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EASA Regulations for Boeing 777

78 airworthiness directives and regulations affecting Boeing 777.

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New ADs and bulletins for Boeing 777, summarized like the ones below, every Monday.

EASA AD US-2026-19-04

Hydraulic Power - Alternating Current Motor Pump - Inspection

The Federal Aviation Administration (FAA) Airworthiness Directive 2026-19-04 is a final rule addressing all Boeing Model 777-200, -200LR, -300, -300ER, and 777F series airplanes. It targets the alternating current motor pump (ACMP) with part number 731966, which has been linked to an overheated condition causing a fire in the main landing gear wheel well. This directive mandates inspections and prohibits installation of affected ACMP parts to mitigate fire risk.

Airworthiness Directive

Boeing 777200200LR300300ER
Boeing 777F

EASA AD 2026-0190

Engine Oil – Oil Pump – Operational Prohibition

EASA Airworthiness Directive 2026-0190 is an operational prohibition directive affecting Rolls-Royce Deutschland RB211 Trent 800 series engines, specifically models 895-17, 892-17, 892B-17, 884-17, 884B-17, 877-17, and Trent 875-17 installed on aircraft such as the Boeing 777. The directive addresses oil pump issues related to certain part numbers that could lead to low oil pressure and potential dual in-flight engine shutdowns. It mandates restrictions on the installation and operation of affected oil pumps to ensure continued airworthiness.

Airworthiness Directive

Rolls-Royce Deutschland Ltd & Co Kg RB211 TRENT 800
Boeing 777

EASA AD 2026-0173-E

Engine Oil – Oil Pump – De-Pairing

EASA Airworthiness Directive 2026-0173-E is an emergency directive addressing RB211 Trent 800 series engines installed on aircraft such as the Boeing 777. It focuses on the oil pump components, specifically certain part numbers of oil pumps that have been identified as potentially unsafe. The directive mandates operational restrictions and maintenance actions to mitigate the risk of dual in-flight engine shutdowns.

Airworthiness DirectiveSuperseded

Rolls-Royce Deutschland Ltd & Co Kg RB211 TRENT 800
Boeing 777

EASA AD US-2026-15-02

Fuel - Lightning Protection for Engine Fuel Feed System - Inspections

Fuel - Lightning Protection for Engine Fuel Feed System - Inspections is a Federal Aviation Administration (FAA) Airworthiness Directive (AD 2026-15-02) that applies to all Boeing Company Model 777-200, 777-200LR, 777-300ER, and 777F series airplanes equipped with General Electric GE90 series turbofan engines. This AD mandates repetitive detailed inspections and bond resistance measurements of bonding jumpers on the first fuel feed tube near the wing front spar at the main fuel tank penetrations, along with corrective actions and maintenance program revisions to incorporate new airworthiness limitations.

Airworthiness Directive

Boeing 777200200LR300ER
Boeing 777F

EASA AD US-2025-21-02

Flight Controls - Non-Essential Gust Suppression Function - Disable

Flight Controls - Non-Essential Gust Suppression Function - Disable is a Federal Aviation Administration (FAA) Airworthiness Directive (AD 2025-21-02) that applies to all Boeing 777-200, -200LR, -300, -300ER, and 777F series airplanes. This AD addresses an unsafe condition related to high electrical resistance in gust suppression sensor transorb modules, which can expose actuator control electronics to damaging lightning voltages and potentially cause loss of airplane control.

Airworthiness Directive

Boeing 777

EASA AD US-2025-15-09

Equipment / Furnishings - Flight Crew Seats - Inspection

The Equipment / Furnishings - Flight Crew Seats - Inspection is a Federal Aviation Administration (FAA) Airworthiness Directive (AD 2025-15-09) that applies to all Boeing Company Model 777 airplanes. It addresses unsafe conditions related to the Captain's and First Officer's seats, specifically the horizontal movement system (HMS), to prevent uncommanded seat movements that could interfere with flight controls during critical phases of flight.

Airworthiness Directive

Boeing 777

EASA AD US-2025-05-10

Principal Structural Elements (PSEs) - Inspection / Revision of Maintenance Program

The Principal Structural Elements (PSEs) - Inspection / Revision of Maintenance Program is a Federal Aviation Administration (FAA) Airworthiness Directive (AD 2025-05-10) that applies to certain Boeing 777-200, -200LR, -300, -300ER, and 777F series airplanes. This final rule updates and supersedes the previous AD 2012-07-06 by requiring revisions to the maintenance program to incorporate new or more restrictive airworthiness limitations aimed at detecting fatigue cracking in principal structural elements. The directive ensures continued structural integrity and safety of the affected Boeing 777 aircraft.

Airworthiness Directive

Boeing 777

EASA AD US-2025-06-12

Auto Flight - Autopilot Flight Director Computer Operational Program Software - Installation / Software Configuration Check

The document titled "Auto Flight - Autopilot Flight Director Computer Operational Program Software - Installation / Software Configuration Check" is a final rule airworthiness directive issued by the FAA affecting certain Boeing 777-200, -200LR, -300, -300ER, and 777F series airplanes. It addresses a safety issue related to misleading flight director guidance during instrument landing system approaches caused by a glideslope beam anomaly. The directive mandates installation of new autopilot flight director computer operational program software and a software configuration check.

Airworthiness Directive

Boeing 777

EASA AD US-2025-06-02

Wings - Upper Wing Skin Common to Certain Fasteners - Repetitive Inspections

The document titled 'Wings - Upper Wing Skin Common to Certain Fasteners - Repetitive Inspections' is an airworthiness directive addressing the need for ongoing inspections of the upper wing skin area related to specific fasteners. It applies to aircraft models equipped with these wing components, ensuring structural integrity through repetitive checks.

Airworthiness Directive

Boeing 777

EASA AD US-2025-02-07

Navigation - Aeroplane Flight Manual - Revision / Software Installation

Airworthiness Directive 2025-02-07 is a final rule issued by the Federal Aviation Administration addressing certain Boeing airplanes including Model MD-11, MD-11F, 717-200, 737-600 through 737-9 series, 747-400 series, 757, 767, and 777. The directive focuses on updating the Aeroplane Flight Manual and installing updated multimode receiver (MMR) operational software to address issues with Coordinated Universal Time calculation errors and simultaneous MMR resets. This affects airplanes equipped with Collins GLU-2100 MMR part number 822-2532-100 with software versions earlier than COL4C-0087-0003.

Airworthiness Directive

Boeing 717
Boeing 737
Boeing 747
Boeing 757
Boeing 767
Boeing 777
Boeing MD-11

EASA AD US-2024-19-14

Fuel - Lightning Protection for the Engine Fuel Feed System - Inspections

The document titled 'Fuel - Lightning Protection for the Engine Fuel Feed System - Inspections' is a regulatory directive focused on ensuring the safety and integrity of the engine fuel feed system against lightning strikes. It addresses inspection requirements to verify the effectiveness of lightning protection measures. The document does not specify particular aircraft types or engine models.

Safety Directive

Boeing 777

EASA AD US-2024-16-09

Fuselage - Underwing Longeron (UWL) - Inspections

The document titled "Fuselage - Underwing Longeron (UWL) - Inspections" is a regulatory directive concerning the inspection requirements for the underwing longeron structure of aircraft fuselages. It aims to ensure the structural integrity and airworthiness of affected aircraft by mandating specific inspection procedures. The document does not explicitly mention particular aircraft models, engine types, or part numbers.

Airworthiness Directive

Boeing 777

EASA AD US-2024-15-07

Fuel - Nitrogen Enriched Air Distribution System (NEADS) Cover Plate Assembly - Installation / Revision of Maintenance and Inspection Program

The Fuel - Nitrogen Enriched Air Distribution System (NEADS) Cover Plate Assembly - Installation / Revision of Maintenance and Inspection Program is a regulatory document addressing the installation and maintenance requirements for the NEADS cover plate assembly. It applies to aircraft equipped with this specific fuel system component, ensuring proper inspection and upkeep to maintain airworthiness and safety standards.

Airworthiness Directive

Boeing 777

EASA AD US-2024-15-03

Superseded by FAA AD 2025-15-09

SUPERSEDED BY FAA AD 2025-15-09 is a Federal Aviation Administration Airworthiness Directive that replaces a previous directive to address safety concerns. The document indicates that the earlier AD is no longer in effect and has been superseded by FAA AD 2025-15-09. No specific aircraft, engines, or parts are detailed in the provided text.

Airworthiness Directive

Boeing 777

EASA AD US-2024-04-09

Instruments - Wing Anti-Ice Valve / Autothrottle - Software Installation

Airworthiness Directive 2024-04-09 issued by the Federal Aviation Administration addresses certain Boeing 777-200, 777-200LR, 777-300, 777-300ER, and 777F series airplanes. It mandates software installation and configuration checks to resolve wing anti-ice valve failures and autothrottle disconnection issues that could compromise flight safety. The directive targets software updates to improve low-speed protection and response to unreliable airspeed events.

Airworthiness Directive

Boeing 777200200LR300300ER
Boeing 777F

EASA AD US-2024-01-07

Flight Controls - Force Limiter Assemblies - Replacement

The Federal Aviation Administration's Airworthiness Directive 2024-01-07 is a final rule addressing all Boeing Company Model 777 airplanes. It mandates the replacement of certain force limiter assemblies for the lateral control mechanism that do not meet maximum design force requirements, and prohibits installation of affected parts. This directive aims to correct an unsafe condition that could lead to loss of lateral control and affect safe flight and landing.

Airworthiness Directive

Boeing 777

EASA AD 2014-0152R2

Engine — Intermediate Pressure Compressor Rotor Shaft and Balance Weights — Inspection / Modification

EASA Airworthiness Directive 2014-0152R2 is an updated regulatory requirement addressing inspection and modification of the intermediate pressure compressor rotor shaft and balance weights on Rolls-Royce RB211 Trent 500, 800, and 900 series engines. These engines are commonly installed on Airbus A340-500, A340-600, Airbus A380, and Boeing 777 aircraft. The directive mandates inspections and modifications to detect and correct cracks that could compromise rotor integrity and aircraft safety.

Airworthiness Directive

Rolls-Royce Deutschland Ltd & Co Kg RB211 TRENT 500
Rolls-Royce Deutschland Ltd & Co Kg RB211 TRENT 800
Rolls-Royce Deutschland Ltd & Co Kg RB211 TRENT 900
Airbus A340-500
Airbus A340-600
Airbus A380
Boeing 777

EASA AD US-2023-21-09

Flight Controls - Trailing Edge Flap Transmission and Gearbox Assemblies - Inspection

Airworthiness Directive 2023-21-09 is a final rule issued by the Federal Aviation Administration (FAA) addressing all Boeing 777-200, 777-200LR, 777-300, 777-300ER, and 777F series airplanes. It mandates inspection or records review of the trailing edge flap transmission and gearbox assemblies to identify affected serial numbers and requires corrective actions if necessary. The directive also restricts the installation of certain parts to prevent unsafe conditions related to flap control failures.

Airworthiness Directive

Boeing 777200200LR300300ER
Boeing 777F

EASA AD US-2023-17-14

Wings - Ring / Front Spar Lower Chords / Front Spar Webs - Inspection

Airworthiness Directive 2023-17-14 is a final rule issued by the Federal Aviation Administration (FAA) that supersedes AD 2022-18-11 and applies to all Boeing Company Model 777 airplanes. It addresses inspection and repair requirements for the left- and right-side ring chords, repair angles, front spar lower chords, and front spar webs related to the underwing longeron, with a focus on preventing cracking and ensuring proper application of fastener cap seals in fuel tank areas.

Airworthiness Directive

Boeing 777

EASA AD US-2023-12-05

Aircraft Flight Manual - Limitations / Operating Procedures - Amendment

The document titled "Aircraft Flight Manual - Limitations / Operating Procedures - Amendment" is a Federal Aviation Administration (FAA) Airworthiness Directive (AD 2023-12-05) that applies to Boeing Model 747-8F, 747-8 series, and 777 airplanes equipped with radio altimeters. It addresses interference issues caused by wireless broadband operations in the 3.7-3.98 GHz 5G C-Band frequency range that affect the reliability of radio altimeters and related airplane systems.

Airworthiness Directive

Boeing 7478F8
Boeing 777