acima do nível do solo
An altitude or height measured with reference to the underlying ground surface directly beneath the aircraft.
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Aircraft Systems
Browse Aircraft Systems terms for pilots, air traffic controllers, cabin crew and aviation learners.
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acumulador hidráulico
A pressurized storage device that maintains hydraulic pressure and absorbs system shocks.
View termalavanca de speed-brake
A cockpit control that arms or actuates spoiler panels to reduce speed or rate of descent during flight and landing roll.
View termalcance omnidirecional VHF
A ground-based radio navigation system providing azimuth guidance to aircraft using VHF signals.
View termalcance visual da pista
The distance over which a pilot of an aircraft on the centre line of a runway can see the runway surface markings or lights.
View termanti‑gelo de asa
A system that prevents or removes ice accumulation on the wing leading edges using bleed air or electrical elements.
View termanti‑gelo de motor
A system that prevents or removes ice formation on engine inlets, typically using hot bleed air.
View termar de ajuste
A system that adds small amounts of hot bleed air to the mixed supply to fine-tune cabin temperature zones.
View termar sangrado
High-pressure air extracted from an aircraft engine's compressor stage and used for environmental control, pressurization, anti-ice, and pneumatic systems.
View termbaliza não direcional
A ground-based radio transmitter used for navigation, providing direction by reference only.
View termbarras do diretor de voo
Visual cues on the Primary Flight Display indicating desired pitch and roll to guide manual flight path.
View termbomba hidráulica
A device that moves hydraulic fluid under pressure to operate aircraft systems such as landing gear, brakes, and flight controls.
View termcircuito de detecção de incêndio
A continuous sensing circuit that detects overheat or fire in aircraft engines, APU, or cargo bays.
View termcircuito hidráulico de comando de voo
Hydraulic circuit dedicated to supplying pressure to flight control surfaces such as ailerons, elevators, and rudder.
View termcomputador de alerta de voo
A system that processes and displays warnings and cautions to the flight crew in response to abnormal conditions.
View termcomputador de aumento de voo
A system on Airbus aircraft that provides additional functions such as yaw damping, rudder trim, and flight envelope protection.
View termcomputador de voo primário
The Boeing main computer responsible for integrating pilot inputs, aircraft data, and actuating control surfaces.
View termcomputador do profundor-aileron
A dedicated computer on Airbus aircraft that processes inputs and controls elevator and aileron surfaces.
View termcomputador do spoiler-elevador
An Airbus computer managing spoilers, elevator backup, and other flight control surfaces for redundancy and flight envelope protection.
View termcomunicação via satélite
A long-range communication system using satellites, enabling cockpit and company contact beyond VHF and HF range.
View termcomunicações de enlace de dados controlador-piloto
A digital communication system enabling direct text-based exchanges between ATC and pilots via data link instead of voice.
View termcontrolador de pressão da cabine
Automatic device that regulates cabin altitude and rate of pressure change by controlling the outflow valve.
View termcontrole digital total do motor
An electronic system that provides complete automated control of all engine parameters for optimum performance.
View termcorte de ar sangrado
Automatic closure of bleed air supply due to over-temperature or over-pressure, protecting the system from damage.
View termdetector de partículas
A sensor in an engine or gearbox that detects metallic particles, indicating wear or damage to internal components.
View termdireção do trem de pouso dianteiro
The system that allows pilots to steer the aircraft’s nose landing gear during taxi and ground operations.
View termdireção eletrônica
A digital control system where electronic signals, not mechanical linkages, direct the nose-gear steering.
View termdisjuntor eletrônico
A digitally controlled switch that protects an electrical circuit from overload by interrupting power supply electronically.
View termdisplay de instrumentos do motor
The cockpit display panel showing all vital engine parameters, including N1/N2, temperature, oil pressure, fuel flow, and vibrations.
View termdisplay de navegação
Electronic display showing route, waypoints, navigation aids, weather, and traffic information.
View termdisplay primário de voo
The main instrument display showing attitude, speed, altitude, heading, and flight director information.
View termdisplay sinóptico do sistema
A cockpit display providing a schematic overview of aircraft systems’ status, such as hydraulics, electrics, fuel, and air conditioning.
View termeletrônica de controle de atuador
Boeing system managing flight control actuator signals for surface movement, including redundancy and fault isolation.
View termequipamento de medição de distância
An aircraft navigation system providing slant-range distance to a ground station, often paired with VOR or ILS.
View termespoleta de carga explosiva
A small pyrotechnic device used to rapidly release fire-extinguishing agent by rupturing a fire bottle seal.
View termextensão alternativa do trem de pouso
A backup method to deploy the landing gear using gravity, hydraulic, or manual means if the normal extension system fails.
View termflaperon
A combined flight control surface that functions as both aileron and flap, used on some aircraft to improve control and lift.
View termfly-by-wire
An electronic flight control system where pilot inputs are transmitted as electrical signals to computers, which command the flight control surfaces.
View termgarrafa de extintor de incêndio
A pressurized container storing extinguishing agent for aircraft fire suppression in engines, cargo, or APU compartments.
View termgerador de acionamento integrado
A generator that converts variable engine speed to constant frequency AC power for aircraft electrical systems.
View termlista mínima de equipamentos
An official list of equipment required for safe operation of an aircraft, specifying items which may be inoperative under specific conditions.
View termmonitor centralizado eletrônico da aeronave
An Airbus system that displays engine, system, and alert messages for aircraft monitoring and troubleshooting.
View termmonitor de temperatura do freio
A cockpit display or system that monitors the temperature of the main landing-gear brakes to prevent overheating.
View termmínimo reduzido de separação vertical
A set of airspace procedures allowing aircraft to be separated by 1,000 feet vertically above FL290, increasing airspace capacity.
View termnível médio do mar
An altitude or elevation reference based on the average sea level used as a standard for aviation altimetry.
View termpainel de controle do transponder
Cockpit panel used for selecting, setting, and controlling aircraft transponder modes and codes.
View termpainel de spoiler
A hinged surface on the upper wing that disrupts airflow, reducing lift and increasing drag for roll control or descent.
View termperformance de navegação requerida
A set of precision standards for aircraft navigation accuracy, integrity, and reliability within defined airspace or procedures.
View termporta estática
An external opening on an aircraft that senses ambient atmospheric pressure for use by the pitot-static system.
View termpressão do óleo do motor
The pressure of oil circulating through an aircraft engine, essential for lubrication and cooling of moving components.
View termpás de estator variáveis
Adjustable compressor guide vanes that control airflow angle and optimize engine efficiency across operating conditions.
View termreferência de dados de ar
Aircraft module collecting and providing airspeed, altitude, and temperature data from external probes.
View termrelação de pressão do motor
Ratio of total pressure at the engine exhaust to that at the engine inlet, used as a primary engine thrust indicator.
View termreservatório hidráulico
A tank storing hydraulic fluid for aircraft hydraulic systems, ensuring continuous supply during all phases of operation.
View termreversor de empuxo
A device used to redirect engine thrust forward to assist with deceleration after landing.
View termrádio de alta frequência
Radio system operating in the HF band (3–30 MHz), enabling long-distance voice communication between aircraft and ATC.
View termrádio de muito alta frequência
Radio system in the VHF band (118–137 MHz) used for primary ATC voice communication within line-of-sight range.
View termsequência automática de partida da APU
A programmed series of actions by which the auxiliary power unit starts automatically and safely without crew intervention.
View termsistema de alerta de proximidade do solo
An aircraft safety system that warns pilots if the aircraft is at risk of controlled flight into terrain or obstacles.
View termsistema de amortecimento de guinada
An automatic system that prevents unwanted yaw oscillations by commanding the rudder, increasing flight comfort and stability.
View termsistema de autothrottle
A system that automatically sets and maintains engine thrust based on flight parameters and autopilot commands.
View termsistema de aviso mestre
A central alerting system that warns the flight crew of abnormal but non-critical system status via lights and aural tones.
View termsistema de consciência e alerta de terreno
Advanced system alerting pilots of hazardous terrain or obstacles using GPS and a terrain database, supplementing GPWS.
View termsistema de freio automático
A system that automatically applies braking at a selected rate during landing or rejected take-off to optimize stopping distance.
View termsistema de gerenciamento de voo
An avionics system integrating navigation, performance, and flight planning for automated aircraft operation.
View termsistema de indicação de motor e alerta da tripulação
A Boeing system that displays engine and system data and alerts for operational and abnormal conditions.
View termsistema de intercomunicação da cabine
An integrated system enabling voice communication between cabin crew and cockpit, and among crew stations.
View termsistema de navegação inercial
A self-contained navigation system using accelerometers and gyros to compute aircraft position, independent of external signals.
View termsistema de pouso por instrumentos
A precision approach system providing lateral and vertical guidance to aircraft during landing using radio signals.
View termsistema de prevenção de colisão de tráfego
An airborne safety system providing pilots with traffic advisories and resolution advisories to avoid mid-air collisions.
View termsistema de resfriamento de aviônicos
A system providing airflow and temperature regulation to prevent overheating of aircraft avionics components.
View termsistema de trim Mach
A system that compensates for Mach tuck by automatically adjusting stabilizer trim at high subsonic speeds.
View termsistema global de navegação por satélite
A system of satellites providing worldwide navigation, including GPS, GLONASS, Galileo, and BeiDou.
View termsistema hidráulico amarelo
One of three independent hydraulic systems on Airbus aircraft, supplying power to specific flight controls, brakes, and cargo doors.
View termsistema hidráulico azul
One of three Airbus hydraulic systems, providing redundancy for flight controls, landing gear, and other powered components.
View termsistema hidráulico verde
One of three independent hydraulic systems on Airbus aircraft, powering primary flight controls, landing gear, and other components.
View termsobressão de ar sangrado
A condition where the bleed air pressure exceeds safe limits, causing automatic shutdown or system warnings.
View termsonda de pressão total número 2
Sensor measuring total (pitot) pressure at engine station 2 for air data and engine control systems.
View termsonda de temperatura total do ar
A sensor on the aircraft that measures total air temperature, providing critical input for engine and air-data systems.
View termspoilers de solo
Spoiler panels on the wings that fully deploy upon landing to disrupt lift and aid in braking and deceleration.
View termtemperatura do ar externo
The temperature of the air outside the aircraft, used in performance and anti-ice calculations.
View termtemperatura dos gases de escape
The temperature of gases emitted by the engine exhaust, critical for monitoring engine health and performance.
View termtransmissão de velocidade constante
A transmission device that converts variable engine speed to a constant speed for generator operation.
View termtransponder modo S
An aircraft transponder providing selective, data-rich responses to ATC interrogations, supporting identification and surveillance functions.
View termtrim do aileron
A flight-control adjustment that sets ailerons to correct lateral imbalance and maintain wings-level flight.
View termtrim do estabilizador
The adjustment of the horizontal stabilizer angle to balance the aircraft in pitch for all flight phases.
View termtrim do leme
A flight-control adjustment that offsets rudder position to maintain coordinated flight and correct for yaw.
View termtubo de pitot
A forward-facing tube that measures dynamic air pressure, providing critical input for airspeed indication.
View termturbina de ar de impacto
A small turbine deployed in flight to provide emergency hydraulic or electrical power using airflow.
View termunidade de controle de potência do profundor
A hydraulic actuator that converts hydraulic pressure into elevator movement, enabling pitch control of the aircraft.
View termunidade de controle do gerador
Electronic module that manages and protects an aircraft generator, monitoring voltage, current, and system faults.
View termunidade de mistura
A component that blends recirculated cabin air with conditioned air from the packs before distribution.
View termunidade de potência auxiliar
A self-contained turbine engine providing electrical and pneumatic power to the aircraft while on the ground or as backup in flight.
View termunidade de referência inercial
An aircraft system providing position and attitude data by processing gyroscopic and accelerometer inputs.
View termunidade de referência inercial de dados de ar
An advanced aircraft system combining air data sensors and inertial reference to provide navigation and performance data.
View termunidade de transferência de potência
A hydraulic unit that enables power transfer between two separate hydraulic systems without mixing their fluids.
View termunidades de ar condicionado
Air conditioning and pressurization units that cool, condition, and regulate the flow of air into the cabin using bleed air.
View termvelocidade do rotor de alta pressão
Rotational speed of the high-pressure compressor or core in a jet engine, commonly indicated as N₂.
View termvelocidade do rotor de baixa pressão
Rotational speed of the low-pressure compressor or fan in a jet engine, often indicated as N₁.
View termventilador de aviônicos
A fan dedicated to cooling avionics equipment by circulating air through the electronics bay.
View termventilador de recirculação
A fan that recirculates cabin air, mixing it with conditioned air to improve efficiency and reduce bleed air demand.
View termvigilância dependente automática por radiodifusão
A surveillance technology in which aircraft broadcast position and flight data, allowing real-time tracking by ATC and other aircraft.
View termválvula da unidade de ar condicionado
A valve that regulates the flow of bleed air into the air conditioning pack.
View termválvula de saída
A valve that regulates the discharge of air from the pressurized cabin to maintain desired cabin pressure.
View termválvula de segurança
A valve designed to automatically relieve excess pressure or vacuum to protect the aircraft structure.
View termválvulas de sangrado variáveis
Adjustable engine valves that regulate bleed air extraction to maintain compressor stability and prevent stall.
View termângulo da alavanca de empuxo
The position or angle of the thrust lever, directly corresponding to engine power demand.
View term