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EASA Regulations for Boeing 777

78 airworthiness directives and regulations affecting Boeing 777.

EASA AD US-2021-19-15

Equipment / Furnishings - Galley Mounted Attendant Seat Fittings - Modification

Airworthiness Directive 2021-19-15 is a final rule issued by the Federal Aviation Administration (FAA) addressing certain Boeing 777-200, -200LR, -300, and -300ER series airplanes. This directive mandates modifications to galley mounted attendant seat fittings to correct non-compliance issues found in some in-service installations. The directive aims to enhance flight attendant safety by ensuring seat fittings can withstand high-G crash conditions.

Airworthiness Directive

Boeing 777200200LR300300ER

EASA AD 2021-0245

Engine – Fuel Pump – Replacement / De-Pairing Limitation

EASA Airworthiness Directive 2021-0245 is an airworthiness directive addressing Rolls-Royce RB211 Trent 800 series engines installed on Boeing 777 aircraft. It mandates replacement and de-pairing of certain fuel pumps affected by corrosion due to water contamination, which can cause loss of thrust control. The directive aims to ensure continued safe operation of affected engines by prohibiting installation of affected parts and engines.

Airworthiness DirectiveSuperseded

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

EASA AD US-2021-18-09

Fuselage - Sloping Pressure Deck Web Solid Rivets - Inspection

The Federal Aviation Administration's Final Rule titled 'Fuselage - Sloping Pressure Deck Web Solid Rivets - Inspection' is an airworthiness directive (AD 2021-18-09) applicable to all Boeing Model 777 airplanes. It addresses the discovery of solid rivets with missing heads on the sloping pressure deck web, which could compromise structural integrity and hydraulic systems. The directive mandates detailed inspections and corrective actions to ensure continued airworthiness.

Airworthiness Directive

Boeing 777

EASA AD US-2021-13-02

Equipment / Furnishings - Insulation Blankets - Installation

Federal Aviation Administration Airworthiness Directive 2021-13-02 is a final rule addressing certain Boeing 777-300ER series airplanes. It mandates installation of an insulation blanket assembly over existing insulation blankets in the aft cargo compartment to prevent leakage of halon and smoke during a fire. This directive aims to enhance fire safety by mitigating potential loss of fire suppressant in the cargo area.

Airworthiness Directive

Boeing 777300ER

EASA AD US-2021-13-10

Wings - Lower Wing Skin - Inspection

Federal Aviation Administration Airworthiness Directive 2021-13-10 is a final rule addressing certain Boeing Company Model 777 airplanes. It mandates repetitive inspections of the lower wing skin fuel tank and dry bay access door cutouts due to fatigue cracking caused by corrosion damage. The directive aims to ensure continued structural integrity and safety of affected aircraft.

Airworthiness Directive

Boeing 777

EASA AD 2021-0135

Oxygen — Low-Pressure Oxygen Flexible Hoses — Replacement

EASA Airworthiness Directive 2021-0135 is an airworthiness directive addressing the replacement of low-pressure oxygen flexible hoses installed on certain Boeing 737-700, 737-800, 747-400, 747-8, 767-400ER, and 777-200 aircraft modified by Lufthansa Technik AG Supplemental Type Certificates. The directive targets conductive oxygen flex-hoses in gaseous passenger oxygen systems that pose a fire risk. It mandates replacing these with non-conductive hoses to ensure continued airworthiness and safety.

Airworthiness Directive

Boeing 737700800
Boeing 7474008
Boeing 767400ER
Boeing 777200

EASA AD 2021-0133

Communications / Cabin Systems — Removable Display Unit and Display Docking Station Attachment Interface — Operational Restriction / Inspection

EASA Airworthiness Directive 2021-0133 is an airworthiness directive addressing operational restrictions and inspection requirements for removable display units (RDU) and display docking stations (DDS) installed on certain Airbus A330-202, A330-203, A340-313, and Boeing 777-300ER aircraft. The directive targets specific affected parts identified by part numbers and applies to aircraft with Supplemental Type Certificates issued to Société Air France S.A. It aims to ensure continued airworthiness by preventing detachment of RDUs that could cause injury.

Airworthiness Directive

Airbus A330
Airbus A340
Boeing 777

EASA AD US-2021-06-03

Superseded by FAA AD 2022-23-10

FAA Airworthiness Directive 2021-06-03 is a final rule affecting all Boeing 777F series airplanes. It addresses a safety issue where a water supply line joint above an electronic equipment cooling filter can detach, causing water intrusion into the forward electronic equipment bay. This AD requires deactivation of the potable water system to mitigate the risk.

Airworthiness Directive

Boeing 777
Boeing 777F

EASA AD US-2020-22-10

Equipment / Furnishings - Foam Insulation on the Dripshield & Overhead Panel Support Structure - Inspection / Replacement

Airworthiness Directive 2020-22-10 is a final rule issued by the Federal Aviation Administration addressing certain Boeing 777-200, -200LR, -300, and -300ER series airplanes. It mandates inspections and potential replacement of Boeing Material Specification 8-39 flexible urethane foam insulation on the dripshield and overhead panel support structure in the flight compartment. This directive aims to mitigate fire risks associated with foam degradation in these areas.

Airworthiness Directive

Boeing 777200200LR300300ER

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.

Airworthiness Directive

General Electric GE90
Boeing 777

EASA AD 2013-0223R1

Engine — Low Pressure Turbine Bearing Support and Exhaust Case Assembly — Inspection / Replacement

EASA Airworthiness Directive 2013-0223R1 is an updated regulatory requirement addressing the inspection and replacement of the low pressure turbine bearing support and exhaust case assembly on Rolls-Royce RB211 Trent 800 series engines, commonly installed on Boeing 777 aircraft. The directive mandates inspection and replacement or rework of certain tail bearing housings to ensure structural integrity. It applies to specific engine models including RB211 Trent 875-17, 877-17, 884-17, 884B-17, 892-17, 892B-17, and 895-17.

Airworthiness Directive

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

EASA AD US-2020-18-12

NOT ADOPTED - EASA DECISION ATTACHED

EASA Decision not to adopt FAA AD 2020-18-12 is a regulatory decision concerning certain Boeing 777 aeroplanes. The FAA Airworthiness Directive 2020-18-12 requires modification of the fuel quantity indicating system to prevent ignition sources inside the centre fuel tank. EASA has decided not to adopt this FAA AD due to insufficient data to confirm an unsafe condition or justify the required corrective actions.

Agency Decision

Boeing 777

EASA AD US-2020-11-11

Fuel - Center Wing Tank Fuel Quantity Indicating System - Check / AFM Revision

The Federal Aviation Administration's Airworthiness Directive 2020-11-11 addresses certain Boeing 777 airplanes. It mandates repetitive checks of the center wing tank fuel quantity indicating system (FQIS) and requires revisions to the airplane flight manual (AFM) to improve flight crew awareness and verification procedures. This directive aims to correct discrepancies between the FQIS fuel quantity and the refueling truck's uploaded fuel amount that have led to unsafe fuel quantity readings.

Airworthiness Directive

Boeing 777

EASA AD US-2020-05-24

Engine Exhaust - Thrust Reverser Latch Beam Firewall Insulation Blanket - Installation

Airworthiness Directive 2020-05-24 is a final rule issued by the Federal Aviation Administration addressing certain Boeing 777-200 series airplanes equipped with specific General Electric GE90 engine models. It requires the installation of a new insulation blanket on the latch beam firewall of each thrust reverser half to prevent potential engine fires. The directive also expands applicability to additional airplanes and mandates inspections for affected thrust reverser part numbers.

Airworthiness Directive

Boeing 777200

EASA AD US-2020-04-19

Auto Flight - Mode Control Panel - Replacement

Airworthiness Directive 2020-04-19 is a final rule issued by the FAA addressing The Boeing Company Model 777 series airplanes, including 777-200, -200LR, -300, -300ER, and 777F. It mandates replacement of certain mode control panels (MCP) with updated parts to prevent uncommanded altitude changes. This directive expands the applicability of the previous AD 2017-15-01 and adds new inspection and replacement requirements.

Airworthiness Directive

Boeing 777200200LR300300ER
Boeing 777F

EASA AD US-2020-03-20

Superseded by FAA AD 2025-02-07

FAA Airworthiness Directive 2020-03-20 is a final rule addressing certain Boeing aircraft models including MD-11, MD-11F, 717-200, all 737-8 and 737-9, all 737-600/-700/-700C/-800/-900/-900ER series, certain 747-400 and 747-400F, certain 757 and 767, and all 777 airplanes. This directive requires revising the airplane flight manual to prohibit operations requiring less than 0.3 required navigational performance (RNP) within a specified geographic area for airplanes equipped with a Collins GLU-2100 multi-mode receiver (MMR) with certain software versions. The AD was issued due to reports of loss or degradation of GPS data affecting positional accuracy.

Airworthiness Directive

Boeing 717200
Boeing 73789600700700C800900900ER
Boeing 747400400F
Boeing 757
Boeing 767
Boeing 777
Boeing MD-11
McDonnell Douglas MD-11
McDonnell Douglas MD-11F

EASA AD US-2019-19-10

Airplane Flight Manual / Minimum Equipment List - Revision / Fuel Crossfeed Valve Operational Check

The Airplane Flight Manual / Minimum Equipment List - Revision / Fuel Crossfeed Valve Operational Check is a final rule airworthiness directive issued by the FAA affecting all Boeing 737-300 through 900ER series, 757, 767, 777, and 787-8 and 787-9 airplanes. It addresses reports of fuel crossfeed valves failing to open during flight, which could lead to fuel starvation and forced off-airport landings. The directive mandates revisions to the airplane flight manual and minimum equipment list to ensure operational checks of fuel crossfeed valves prior to extended operations (ETOPS) flights when certain valves or fuel balancing systems are inoperative.

Airworthiness Directive

Boeing 737300400500600700800900ER
Boeing 757
Boeing 767
Boeing 777
Boeing 78789

EASA AD US-2019-25-12

Oxygen - Low-Pressure Oxygen Flex Hoses - Replacement

The Federal Aviation Administration's Airworthiness Directive 2019-25-12 addresses certain Boeing 777-200 and 777-300ER series airplanes equipped with therapeutic oxygen systems. This directive mandates the replacement of low-pressure oxygen flex hoses with new non-conductive hoses to prevent potential electrical conductivity hazards. The directive updates and supersedes the previous AD 2016-18-02 by adding additional required actions for certain airplane groups.

Airworthiness Directive

Boeing 777200300ER

EASA AD US-2019-25-14

Stringer Splices and Skin Splice Straps - Repetitive Inspections

The Federal Aviation Administration's Airworthiness Directive 2019-25-14 mandates repetitive inspections for certain Boeing 777-300ER and 777F series airplanes. This directive addresses widespread fatigue damage in fuselage stringers, stringer splices, and skin splice straps by requiring detailed and high frequency eddy current inspections along with applicable corrective actions. The directive aims to ensure continued airworthiness and safety of these aircraft models.

Airworthiness Directive

Boeing 777300ER
Boeing 777F

EASA AD US-2019-16-13

Fuel - Water and Fuel Scavenge System - Operating Limitations / Modification

Airworthiness Directive 2019-16-13 is a final rule issued by the Federal Aviation Administration affecting certain Boeing 777-200 and 777-300 series airplanes. It addresses issues with the water and fuel scavenge system that can cause trapped fuel and unavailable fuel reserves. The directive mandates operating limitations or modifications to the fuel scavenge and jettison systems, electrical wiring, and software installations to ensure safe operation.

Airworthiness Directive

Boeing 777200300