Abgastemperatur
The temperature of gases emitted by the engine exhaust, critical for monitoring engine health and performance.
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Aircraft Systems
Browse Aircraft Systems terms for pilots, air traffic controllers, cabin crew and aviation learners.
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Abluftventil
A valve that regulates the discharge of air from the pressurized cabin to maintain desired cabin pressure.
View termAir-Data-Inertialreferenzeinheit
An advanced aircraft system combining air data sensors and inertial reference to provide navigation and performance data.
View termAir-Data-Referenz
Aircraft module collecting and providing airspeed, altitude, and temperature data from external probes.
View termalternative Fahrwerksausfahrt
A backup method to deploy the landing gear using gravity, hydraulic, or manual means if the normal extension system fails.
View termAutobremsanlage
A system that automatically applies braking at a selected rate during landing or rejected take-off to optimize stopping distance.
View termautomatische abhängige Überwachung – Rundfunk
A surveillance technology in which aircraft broadcast position and flight data, allowing real-time tracking by ATC and other aircraft.
View termautomatische APU-Startsequenz
A programmed series of actions by which the auxiliary power unit starts automatically and safely without crew intervention.
View termAußentemperatur
The temperature of the air outside the aircraft, used in performance and anti-ice calculations.
View termAvionik-Kühlsystem
A system providing airflow and temperature regulation to prevent overheating of aircraft avionics components.
View termAvioniklüfter
A fan dedicated to cooling avionics equipment by circulating air through the electronics bay.
View termblaues Hydrauliksystem
One of three Airbus hydraulic systems, providing redundancy for flight controls, landing gear, and other powered components.
View termBodennäherungswarnsystem
An aircraft safety system that warns pilots if the aircraft is at risk of controlled flight into terrain or obstacles.
View termBodenspoiler
Spoiler panels on the wings that fully deploy upon landing to disrupt lift and aid in braking and deceleration.
View termBrandmeldeschleife
A continuous sensing circuit that detects overheat or fire in aircraft engines, APU, or cargo bays.
View termBremsentemperaturanzeige
A cockpit display or system that monitors the temperature of the main landing-gear brakes to prevent overheating.
View termBugfahrwerkslenkung
The system that allows pilots to steer the aircraft’s nose landing gear during taxi and ground operations.
View termDatenlink-Kommunikation zwischen Fluglotsen und Piloten
A digital communication system enabling direct text-based exchanges between ATC and pilots via data link instead of voice.
View termelektronischer Leistungsschalter
A digitally controlled switch that protects an electrical circuit from overload by interrupting power supply electronically.
View termelektronischer zentraler Flugzeugmonitor
An Airbus system that displays engine, system, and alert messages for aircraft monitoring and troubleshooting.
View termEntfernungsmessgerät
An aircraft navigation system providing slant-range distance to a ground station, often paired with VOR or ILS.
View termerforderliche Navigationsleistung
A set of precision standards for aircraft navigation accuracy, integrity, and reliability within defined airspace or procedures.
View termFeuerlöscherflasche
A pressurized container storing extinguishing agent for aircraft fire suppression in engines, cargo, or APU compartments.
View termFlaperon
A combined flight control surface that functions as both aileron and flap, used on some aircraft to improve control and lift.
View termFlugdirektor-Balken
Visual cues on the Primary Flight Display indicating desired pitch and roll to guide manual flight path.
View termFlugmanagementsystem
An avionics system integrating navigation, performance, and flight planning for automated aircraft operation.
View termFlugsteuerungshydraulikkreis
Hydraulic circuit dedicated to supplying pressure to flight control surfaces such as ailerons, elevators, and rudder.
View termFlugunterstützungscomputer
A system on Airbus aircraft that provides additional functions such as yaw damping, rudder trim, and flight envelope protection.
View termFlugwarncomputer
A system that processes and displays warnings and cautions to the flight crew in response to abnormal conditions.
View termFly-by-wire-System
An electronic flight control system where pilot inputs are transmitted as electrical signals to computers, which command the flight control surfaces.
View termFlügel-Enteisung
A system that prevents or removes ice accumulation on the wing leading edges using bleed air or electrical elements.
View termgelbes Hydrauliksystem
One of three independent hydraulic systems on Airbus aircraft, supplying power to specific flight controls, brakes, and cargo doors.
View termGeländeaufmerksamkeits- und Warnsystem
Advanced system alerting pilots of hazardous terrain or obstacles using GPS and a terrain database, supplementing GPWS.
View termGenerator-Steuereinheit
Electronic module that manages and protects an aircraft generator, monitoring voltage, current, and system faults.
View termGesamtdrucksonde Nummer 2
Sensor measuring total (pitot) pressure at engine station 2 for air data and engine control systems.
View termGierdämpfersystem
An automatic system that prevents unwanted yaw oscillations by commanding the rudder, increasing flight comfort and stability.
View termglobales Navigationssatellitensystem
A system of satellites providing worldwide navigation, including GPS, GLONASS, Galileo, and BeiDou.
View termgrünes Hydrauliksystem
One of three independent hydraulic systems on Airbus aircraft, powering primary flight controls, landing gear, and other components.
View termHauptflugcomputer
The Boeing main computer responsible for integrating pilot inputs, aircraft data, and actuating control surfaces.
View termHilfstriebwerk
A self-contained turbine engine providing electrical and pneumatic power to the aircraft while on the ground or as backup in flight.
View termHochdruckrotordrehzahl
Rotational speed of the high-pressure compressor or core in a jet engine, commonly indicated as N₂.
View termHydraulikbehälter
A tank storing hydraulic fluid for aircraft hydraulic systems, ensuring continuous supply during all phases of operation.
View termHydraulikpumpe
A device that moves hydraulic fluid under pressure to operate aircraft systems such as landing gear, brakes, and flight controls.
View termHydraulikspeicher
A pressurized storage device that maintains hydraulic pressure and absorbs system shocks.
View termHöhenruder-Querruder-Computer
A dedicated computer on Airbus aircraft that processes inputs and controls elevator and aileron surfaces.
View termHöhenruder-Steuereinheit
A hydraulic actuator that converts hydraulic pressure into elevator movement, enabling pitch control of the aircraft.
View termInertialreferenzeinheit
An aircraft system providing position and attitude data by processing gyroscopic and accelerometer inputs.
View termInstrumentenlandesystem
A precision approach system providing lateral and vertical guidance to aircraft during landing using radio signals.
View termintegrierter Antriebsgenerator
A generator that converts variable engine speed to constant frequency AC power for aircraft electrical systems.
View termKabinen-Druckregler
Automatic device that regulates cabin altitude and rate of pressure change by controlling the outflow valve.
View termKabinen-Kommunikationssystem
An integrated system enabling voice communication between cabin crew and cockpit, and among crew stations.
View termKlimaanlagen
Air conditioning and pressurization units that cool, condition, and regulate the flow of air into the cabin using bleed air.
View termKlimaanlagenventil
A valve that regulates the flow of bleed air into the air conditioning pack.
View termKollisionswarnsystem
An airborne safety system providing pilots with traffic advisories and resolution advisories to avoid mid-air collisions.
View termKonstantdrehzahlgetriebe
A transmission device that converts variable engine speed to a constant speed for generator operation.
View termKurzwellenfunk
Radio system operating in the HF band (3–30 MHz), enabling long-distance voice communication between aircraft and ATC.
View termLeistungstransfereinheit
A hydraulic unit that enables power transfer between two separate hydraulic systems without mixing their fluids.
View termMach-Trimmsystem
A system that compensates for Mach tuck by automatically adjusting stabilizer trim at high subsonic speeds.
View termMaster-Caution-System
A central alerting system that warns the flight crew of abnormal but non-critical system status via lights and aural tones.
View termMindestausrüstungsliste
An official list of equipment required for safe operation of an aircraft, specifying items which may be inoperative under specific conditions.
View termMischeinheit
A component that blends recirculated cabin air with conditioned air from the packs before distribution.
View termmittlerer Meeresspiegel
An altitude or elevation reference based on the average sea level used as a standard for aviation altimetry.
View termMode-S-Transponder
An aircraft transponder providing selective, data-rich responses to ATC interrogations, supporting identification and surveillance functions.
View termNavigationsanzeige
Electronic display showing route, waypoints, navigation aids, weather, and traffic information.
View termNiederdruckrotordrehzahl
Rotational speed of the low-pressure compressor or fan in a jet engine, often indicated as N₁.
View termPitotrohr
A forward-facing tube that measures dynamic air pressure, providing critical input for airspeed indication.
View termPrimärfluganzeige
The main instrument display showing attitude, speed, altitude, heading, and flight director information.
View termQuerrudertrimmung
A flight-control adjustment that sets ailerons to correct lateral imbalance and maintain wings-level flight.
View termreduziertes vertikales Trennminimum
A set of airspace procedures allowing aircraft to be separated by 1,000 feet vertically above FL290, increasing airspace capacity.
View termSatellitenkommunikation
A long-range communication system using satellites, enabling cockpit and company contact beyond VHF and HF range.
View termSchubautomatiksystem
A system that automatically sets and maintains engine thrust based on flight parameters and autopilot commands.
View termSchubhebelwinkel
The position or angle of the thrust lever, directly corresponding to engine power demand.
View termSchubumkehr
A device used to redirect engine thrust forward to assist with deceleration after landing.
View termSeitenrudertrimmung
A flight-control adjustment that offsets rudder position to maintain coordinated flight and correct for yaw.
View termSicherheitsventil
A valve designed to automatically relieve excess pressure or vacuum to protect the aircraft structure.
View termSichtweite auf der Landebahn
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 termSpanndetektor
A sensor in an engine or gearbox that detects metallic particles, indicating wear or damage to internal components.
View termSpeedbrake-Hebel
A cockpit control that arms or actuates spoiler panels to reduce speed or rate of descent during flight and landing roll.
View termSpoiler-Höhenruder-Computer
An Airbus computer managing spoilers, elevator backup, and other flight control surfaces for redundancy and flight envelope protection.
View termSpoilerklappe
A hinged surface on the upper wing that disrupts airflow, reducing lift and increasing drag for roll control or descent.
View termSprengsatz-Auslöser
A small pyrotechnic device used to rapidly release fire-extinguishing agent by rupturing a fire bottle seal.
View termStatikport
An external opening on an aircraft that senses ambient atmospheric pressure for use by the pitot-static system.
View termStaudruckturbine
A small turbine deployed in flight to provide emergency hydraulic or electrical power using airflow.
View termSteer-by-wire
A digital control system where electronic signals, not mechanical linkages, direct the nose-gear steering.
View termStellglied-Steuerelektronik
Boeing system managing flight control actuator signals for surface movement, including redundancy and fault isolation.
View termSystem-Synoptikanzeige
A cockpit display providing a schematic overview of aircraft systems’ status, such as hydraulics, electrics, fuel, and air conditioning.
View termTotal-Lufttemperaturfühler
A sensor on the aircraft that measures total air temperature, providing critical input for engine and air-data systems.
View termTransponder-Bedienfeld
Cockpit panel used for selecting, setting, and controlling aircraft transponder modes and codes.
View termTriebwerksanzeige- und Crew-Warnsystem
A Boeing system that displays engine and system data and alerts for operational and abnormal conditions.
View termTriebwerksanzeigenanzeige
The cockpit display panel showing all vital engine parameters, including N1/N2, temperature, oil pressure, fuel flow, and vibrations.
View termTriebwerksdruckverhältnis
Ratio of total pressure at the engine exhaust to that at the engine inlet, used as a primary engine thrust indicator.
View termTriebwerksenteisung
A system that prevents or removes ice formation on engine inlets, typically using hot bleed air.
View termTriebwerksöldruck
The pressure of oil circulating through an aircraft engine, essential for lubrication and cooling of moving components.
View termTrimm des Höhenleitwerks
The adjustment of the horizontal stabilizer angle to balance the aircraft in pitch for all flight phases.
View termTrimm-Luft
A system that adds small amounts of hot bleed air to the mixed supply to fine-tune cabin temperature zones.
View termTrägheitsnavigationssystem
A self-contained navigation system using accelerometers and gyros to compute aircraft position, independent of external signals.
View termUKW-Drehfunkfeuer
A ground-based radio navigation system providing azimuth guidance to aircraft using VHF signals.
View termUltrakurzwellenfunk
Radio system in the VHF band (118–137 MHz) used for primary ATC voice communication within line-of-sight range.
View termUmluftventilator
A fan that recirculates cabin air, mixing it with conditioned air to improve efficiency and reduce bleed air demand.
View termunkgerichtetes Funkfeuer
A ground-based radio transmitter used for navigation, providing direction by reference only.
View termverstellbare Leitschaufeln
Adjustable compressor guide vanes that control airflow angle and optimize engine efficiency across operating conditions.
View termverstellbare Zapfluftventile
Adjustable engine valves that regulate bleed air extraction to maintain compressor stability and prevent stall.
View termvollständige digitale Triebwerkssteuerung
An electronic system that provides complete automated control of all engine parameters for optimum performance.
View termZapfluft
High-pressure air extracted from an aircraft engine's compressor stage and used for environmental control, pressurization, anti-ice, and pneumatic systems.
View termZapfluftabschaltung
Automatic closure of bleed air supply due to over-temperature or over-pressure, protecting the system from damage.
View termZapfluftüberdruck
A condition where the bleed air pressure exceeds safe limits, causing automatic shutdown or system warnings.
View termüber Grund
An altitude or height measured with reference to the underlying ground surface directly beneath the aircraft.
View term