71 airworthiness directives and regulations affecting Boeing 777.
EASA AD US-2021-06-03
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.
EASA AD US-2020-22-10
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.
EASA AD US-2020-20-17
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.
EASA AD 2013-0223R1
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.
EASA AD US-2020-18-12
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.
EASA AD US-2020-11-11
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.
EASA AD US-2020-05-24
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.
EASA AD US-2020-04-19
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.
EASA AD US-2020-03-20
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.
EASA AD US-2019-19-10
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.
EASA AD US-2019-25-12
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.
EASA AD US-2019-25-14
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.
EASA AD US-2019-16-13
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.
EASA AD US-2019-16-05
FAA Airworthiness Directive 2019-16-05 is a final rule applicable to all Boeing Model 777 airplanes. It addresses uncommanded fore/aft movements of the Captain's and First Officer's seats by requiring identification of seat part and serial numbers and applicable corrective actions. This directive aims to mitigate the risk of flight control obstruction or unintended inputs caused by seat movement during critical flight phases.
EASA AD US-2019-11-02
Airworthiness Directive 2019-11-02 is a final rule issued by the Federal Aviation Administration (FAA) addressing The Boeing Company Model 777 airplanes. It mandates inspections of the left and right side underwing longerons to detect cracks and requires related investigative and corrective actions to ensure structural integrity and prevent fuel leakage. This directive updates previous requirements to enhance safety for affected aircraft.
EASA AD US-2019-01-08
FAA Airworthiness Directive 2019-01-08 is a final rule addressing certain Boeing 777-200, -200LR, -300, and -300ER series airplanes. It mandates modifications to galley-mounted flight attendant seat fittings due to identified non-compliance issues that could cause seat failure in high-G crash conditions. This directive aims to enhance flight attendant safety and ensure their ability to assist in passenger evacuation.
EASA AD 2018-0259R1
EASA Airworthiness Directive 2018-0259R1 is an updated directive addressing safety concerns related to USB receptacles installed in various aircraft including Fokker F27 and F28 models, Airbus A318 through A340 series, ATR42 and ATR72, Boeing 737 through 777, and Bombardier CL-600 and DHC-8 aircraft. The directive mandates modifications to the affected Lone Star Aviation USB receptacle part number LS03-05050-A to prevent overheating and smoke/fumes in the cockpit. It applies to aircraft with these USB receptacles installed via Fokker Services Supplemental Type Certificates, Service Bulletins, or minor modifications.
EASA AD US-2018-25-11
Federal Register Volume 83, Number 240 (AD 2018-25-11) is a final rule airworthiness directive issued by the FAA for certain Boeing 777-200 and -300 series airplanes equipped with Rolls-Royce RB211-Trent 800 engines. It addresses inadequate clearance between thermal protection system insulation blankets and electronic engine control wiring, which has caused wire damage. The directive mandates repetitive inspections and corrective actions to ensure continued airworthiness.
EASA AD US-2018-26-05
The Federal Aviation Administration's Airworthiness Directive 2018-26-05 addresses certain Boeing Model 777 airplanes. It requires inspection and possible replacement of motor-operated valve (MOV) actuators at the engine fuel shutoff spar valve positions and mandates revising the maintenance or inspection program to include a new airworthiness limitation. This directive aims to prevent latent failures of engine fuel shutoff spar valves that could compromise fuel flow termination during emergencies.
EASA AD US-2018-14-02
FAA Airworthiness Directive 2018-14-02 is a final rule applicable to certain Boeing Company Model 777-200, -200LR, -300, and -300ER series airplanes. It addresses the presence and condition of Boeing Material Specification 8-39 flexible urethane foam insulation in specific areas of these aircraft. The directive mandates inspections and, if necessary, replacement of foam insulation on the dripshield above the overhead panel support structure and, for some airplanes, on the overhead panel support structure itself.