RegNotify

EASA Regulations for Boeing 777

71 airworthiness directives and regulations affecting Boeing 777.

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.

Dec 3, 2025
Airworthiness DirectiveMaintenanceSafety MgmtBoeing 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.

Aug 21, 2025
Airworthiness DirectiveMaintenanceSafety MgmtBoeing 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.

Apr 15, 2025
Airworthiness DirectiveMaintenanceSafety MgmtBoeing 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.

Apr 2, 2025
Airworthiness DirectiveMaintenanceSafety MgmtBoeing 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.

Mar 24, 2025
Airworthiness DirectiveMaintenanceSafety MgmtBoeing 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.

Mar 12, 2025
Airworthiness DirectiveFlight OpsMaintenanceSafety MgmtBoeing 717Boeing 737Boeing 747Boeing 757Boeing 767Boeing 777Boeing 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.

Oct 14, 2024
Safety DirectiveMaintenanceSafety MgmtBoeing 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.

Oct 14, 2024
Airworthiness DirectiveMaintenanceSafety MgmtBoeing 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.

Oct 2, 2024
Airworthiness DirectiveMaintenanceSafety MgmtBoeing 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.

Apr 10, 2024
Airworthiness DirectiveMaintenanceSafety MgmtBoeing 777Boeing 777-200Boeing 777-200LRBoeing 777-300Boeing 777-300ERBoeing 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.

Feb 19, 2024
Airworthiness DirectiveMaintenanceSafety MgmtBoeing 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.

Nov 23, 2023
Airworthiness DirectiveMaintenanceSafety MgmtRolls-Royce Deutschland Ltd & Co Kg RB211 TRENT 500Rolls-Royce Deutschland Ltd & Co Kg RB211 TRENT 800Rolls-Royce Deutschland Ltd & Co Kg RB211 TRENT 900Airbus A340-500Airbus A340-600Airbus A380Boeing 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.

Nov 20, 2023
Airworthiness DirectiveMaintenanceSafety MgmtBoeing 777Boeing 777-200Boeing 777-200LRBoeing 777-300Boeing 777-300ERBoeing 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.

Sep 4, 2023
Airworthiness DirectiveMaintenanceSafety MgmtBoeing 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.

Jun 26, 2023
Airworthiness DirectiveFlight OpsSafety MgmtBoeing 747Boeing 777Boeing 747-8FBoeing 747-8

EASA AD US-2023-08-05

Fuselage - Pivot Bulkhead Forward Outer Chord - Repetitive Inspections

Airworthiness Directive 2023-08-05 is a final rule issued by the Federal Aviation Administration addressing certain Boeing Company Model 777 airplanes. It mandates repetitive detailed and high frequency eddy current inspections of the pivot bulkhead forward outer chord at station 2370 and longeron fitting to detect cracking. The directive aims to prevent potential failure of the pivot bulkhead outer chord that could lead to loss of horizontal stabilizer control and airplane controllability.

Jun 26, 2023
Airworthiness DirectiveMaintenanceSafety MgmtBoeing 777

EASA AD 2021-0234R1

Information Systems — Electronic Flight Bag Universal Serial Bus Receptacle — Modification

EASA Airworthiness Directive 2021-0234R1 is a regulatory update addressing the modification of Electronic Flight Bag (EFB) Universal Serial Bus (USB) receptacles installed on various aircraft including Fokker F27 and F28 models, Airbus A318 through A340 series, ATR42 and ATR72, Boeing 737 through 777 models, Bombardier CL-600 series, and De Havilland Canada DHC-8 aircraft. The directive mandates modifications to affected USB receptacles to prevent overheating and potential smoke or fumes in the cockpit. This AD applies to specific manufacturer serial numbers as detailed in the directive's appendix.

May 11, 2023
Airworthiness DirectiveMaintenanceSafety MgmtAirbus A318Airbus A319Airbus A320Airbus A321Airbus A330Airbus A340ATR ATR42ATR ATR72Boeing 737Boeing 757Boeing 767Boeing 777Bombardier CL-600 (Challenger)De Havilland Canada DHC-8Fokker CRR-0146Fokker CRR-0185Fokker CRR-0186Fokker CRR-0190Fokker CRR-0206Fokker CRR-0210Fokker CRR-0241Fokker CRR-0265Fokker CRR-0290Fokker CRR-0300Fokker CRR-0309MHI RJ Aviation CL-600 (Regional Jet)Fokker F27Fokker F28Boeing 747Bombardier CL-600

EASA AD US-2023-03-04

Time Limits / Maintenance Checks — Airworthiness Limitations Section — Amendment

The Federal Aviation Administration's Airworthiness Directive 2023-03-04 is a final rule addressing all Boeing Model 777 airplanes. It mandates modifications and inspections related to the fuel system, including installation of Teflon sleeves, cap sealing of fasteners, and revisions to maintenance programs to incorporate more restrictive airworthiness limitations. This directive aims to mitigate the risk of fuel tank explosions caused by arcing in the main and center fuel tanks.

Mar 28, 2023
Airworthiness DirectiveMaintenanceSafety MgmtBoeing 777

EASA AD 2023-0040

Engine — Intermediate Pressure Compressor Rotor Shaft — Inspection

EASA Airworthiness Directive 2023-0040 is an airworthiness directive addressing Rolls-Royce RB211 Trent 800 series engines, specifically models 875-17, 877-17, 884-17, 884B-17, 892-17, 892B-17, and 895-17, commonly installed on Boeing 777 aircraft. The directive mandates inspections of the intermediate pressure compressor rotor shaft to detect cracking in the balance land area. It aims to ensure continued safe operation by requiring repetitive visual borescope inspections and corrective actions as necessary.

Feb 16, 2023
Airworthiness DirectiveMaintenanceSafety MgmtRolls-Royce Deutschland Ltd & Co Kg RB211 TRENT 800Boeing 777