Accumulation De Glace En Vol
The buildup of ice on aircraft surfaces during flight due to supercooled water droplets freezing on contact, which can impair performance or control.
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Emergencies
Browse Emergencies terms for pilots, air traffic controllers, cabin crew and aviation learners.
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Activation du Vibreur de Manche
The activation of a device that rapidly vibrates the control column to warn the pilot of an impending aerodynamic stall.
View termAlerte de Conscience du Terrain
A warning generated by aircraft systems indicating proximity to terrain that may result in controlled flight into terrain (CFIT).
View termAlerte incendie
Automated alert indicating detection of fire or overheat in an aircraft system area, requiring immediate crew action.
View termAlimentation Croisée En Carburant
A procedure that allows fuel to be transferred from one tank to another, typically to correct a fuel imbalance or supply an engine when a tank is low.
View termAlimentation Par Batterie Seule
A condition where the aircraft’s electrical system is operating solely on battery power, typically due to the failure of all generators or external power sources.
View termAmerrissage
An intentional or emergency landing of an aircraft on a body of water due to operational necessity or system failure.
View termAmerrissage d'urgence
The controlled emergency landing of an aircraft on water.
View termArrêt D’un Pack De Climatisation
An automatic or commanded shutdown of an air conditioning pack due to overtemperature, overpressure, or system fault, impacting cabin environmental control.
View termAvertissement de Décrochage
An alert that warns the pilot of an impending aerodynamic stall, usually through audible or tactile signals like a horn or stick shaker.
View termAvis de résolution du TCAS
An instruction issued by the aircraft's TCAS system to avoid potential collision with another aircraft, advising a vertical maneuver.
View termBalise de localisation d'urgence
A portable beacon transmitting a distress signal for search and rescue, sometimes used interchangeably with ELT in aviation.
View termBlocage des commandes de vol
A condition in which the aircraft's primary or secondary flight control surfaces become unresponsive or stuck due to mechanical failure or obstruction.
View termBouteille d'extinction incendie moteur
A pressurized container installed in aircraft engines used to release extinguishing agent when a fire is detected.
View termCarburant Minimum
A state where an aircraft’s fuel supply has reached minimum landing level; any additional delay may lead to emergency.
View termCode transpondeur 7700
The ATC transponder code universally set to indicate a general emergency, alerting controllers to an onboard emergency situation.
View termCollision aviaire
A collision between an aircraft and one or more birds, often occurring during takeoff or landing and potentially affecting flight safety.
View termContrôle De Sécurité De La Cabine
A safety verification by cabin crew to ensure passengers are seated, seat belts fastened, cabin items stowed, and emergency equipment is ready before take-off or landing.
View termDescente d'urgence
A rapid descent initiated by flight crew in response to a pressurization failure, smoke, or other onboard emergency.
View termDécollage Avorté
A procedure in which a take-off is intentionally aborted by the flight crew after the aircraft has started to roll but before it has lifted off the runway.
View termDécompression rapide
A sudden and unexpected loss of cabin pressure, requiring immediate descent and use of supplemental oxygen.
View termDéfaillance De La Trappe D’entrée D’air Dynamique
A malfunction where the ram air inlet door fails to open or close properly, affecting ventilation and cooling of avionics or cabin systems.
View termDéfaillance du train d'atterrissage
A failure in the aircraft's landing gear system preventing proper extension or retraction.
View termDéfibrillateur externe automatisé
A portable device used to deliver an electric shock to restore normal heart rhythm during sudden cardiac arrest on board.
View termDéploiement des masques à oxygène passagers
The automatic or manual release of oxygen masks for passengers in response to cabin depressurization or smoke.
View termDéploiement Du Toboggan D'évacuation
The act of activating and extending the inflatable escape slide on an aircraft to facilitate emergency evacuation.
View termDépressurisation de la cabine
A sudden or gradual loss of cabin pressure, requiring immediate response such as emergency descent and oxygen use.
View termDéséquilibre De Carburant
A condition in which there is a significant difference in the quantity of fuel between the left and right tanks, potentially affecting aircraft stability or flight performance.
View termDétachement du moteur
A catastrophic in-flight event where the engine detaches from the aircraft structure, requiring immediate emergency handling.
View termDétection De Fumée Dans Les Toilettes
An alert triggered by smoke sensors in the aircraft lavatory indicating possible fire, requiring immediate cabin crew and cockpit response.
View termDétournement d'avion
The unlawful seizure of an aircraft by an individual or group, often involving threats or force, during any phase of flight.
View termDéviation Complète De La Gouverne De Direction
A condition in which the rudder deflects fully to one side due to system failure or malfunction, potentially causing severe yaw deviation.
View termEntrée d'air dynamique
An air intake system that uses forward motion of the aircraft to force external air into ducts for ventilation or pressurization.
View termEntrée De Gouverne De Direction Non Commandée
An unintentional or spontaneous rudder movement not initiated by the pilot, potentially affecting aircraft yaw stability and directional control.
View termExercice D'amerrissage D'urgence
A procedure practiced by cabin crew and passengers for emergency water landings, including life vest use, brace position, and evacuation steps.
View termExercice de fumée
A practiced emergency procedure used by flight or cabin crew to respond to smoke or fire in the aircraft.
View termExtension manuelle du train d’atterrissage
The deployment of the aircraft's landing gear using a non-powered, manual backup system in the event of hydraulic or electrical failure.
View termExtinction des Deux Moteurs
A critical emergency in which both engines of an aircraft stop producing thrust due to flameout, often requiring immediate gliding and restart procedures.
View termFeu dans la soute à cargaison
A detected or suspected fire in the aircraft's cargo hold, requiring immediate fire suppression and emergency procedures.
View termFeu de l'unité de puissance auxiliaire
A fire involving the auxiliary power unit, typically located in the aircraft's tail, requiring immediate shutdown and fire suppression.
View termFoudroiement
A direct or indirect electrical discharge from the atmosphere to an aircraft, potentially causing damage to avionics, surfaces, or structural systems.
View termFouille de Sécurité
An official inspection of an aircraft or passengers by security personnel to ensure no security threats are present.
View termFuite D’air De Prélèvement
An unintended escape of high-pressure air from the aircraft bleed air system, which may affect pressurization, anti-ice, or environmental control systems.
View termFumée Dans La Baie Avionique
Smoke detected in the avionics bay, indicating potential fire or overheating of electronic components, requiring immediate response and system isolation.
View termFumée en cabine
Presence of smoke in the passenger or flight deck cabin, indicating potential fire requiring immediate attention.
View termGivrage Du Tube De Pitot
Ice formation in the pitot tube, which can obstruct accurate airspeed measurement, potentially leading to unreliable or erroneous cockpit indications.
View termImpact de la Dérive sur la Piste
An incident in which the tail of the aircraft contacts the runway surface during take-off or landing due to excessive pitch attitude.
View termIntervention Illicite
An act of unlawful seizure, threat or attack against an aircraft, its passengers, crew or ground infrastructure that endangers aviation safety.
View termIntrusion sur la Piste
Any occurrence at an aerodrome involving the incorrect presence of an aircraft, vehicle, or person on the protected area of a surface designated for the landing and take-off of aircraft.
View termListe de vérification critique en temps
A checklist containing emergency procedures that must be executed immediately to prevent loss of control or further danger.
View termListe de vérification pour situations anormales
A predefined checklist used by pilots to address abnormal but not emergency situations.
View termLoi De Commande Alternée
A degraded mode in fly-by-wire aircraft providing limited flight envelope protections, used when normal law is lost due to system faults.
View termLoi De Commande Anormale
A rare fallback flight control law in fly-by-wire aircraft used under severe system failures where no flight envelope protections are available and handling characteristics are degraded.
View termLoi De Commande Directe
A degraded flight control mode in fly-by-wire aircraft where control surfaces respond directly to pilot input without flight envelope protection.
View termManuel de référence rapide
A cockpit manual containing condensed checklists and procedures for abnormal and emergency situations.
View termManœuvre d'Évitement du Cisaillement du Vent
A predefined and trained maneuver to escape from windshear conditions during takeoff or landing.
View termMayday
International radiotelephony distress signal used to indicate a grave and imminent threat requiring immediate assistance.
View termMenace de Bombe
A reported or suspected presence of an explosive device on board an aircraft or within the airport area.
View termObstruction De La Prise Statique
An obstruction in the static pressure port of an aircraft, leading to erroneous altitude, airspeed, and vertical speed indications, potentially affecting flight safety.
View termPan-Pan
International urgency signal indicating a situation requiring assistance but not immediately life-threatening.
View termPanne Double Moteur
A critical emergency situation where both engines of a multi-engine aircraft cease functioning in flight.
View termPanne du système hydraulique
A malfunction in the aircraft's hydraulic system, potentially affecting control surfaces, landing gear, or brakes.
View termPanne moteur
A condition where one or more aircraft engines cease to provide thrust, requiring immediate emergency procedures.
View termPassager indiscipliné
A passenger whose disruptive or violent behaviour interferes with the safety or order of the flight and crew instructions.
View termPerte de Pressurisation
A condition in which an aircraft's cabin fails to maintain the required pressure differential compared to the outside atmosphere.
View termPerte double du système hydraulique
A simultaneous failure of two independent hydraulic systems on an aircraft, significantly degrading control and operational capability.
View termPneu Éclaté
A condition where an aircraft tyre bursts during taxi, take-off, or landing, possibly affecting braking or steering.
View termPosition De Protection
A body position adopted by passengers and crew to minimize injury during an imminent impact or emergency landing, as per operator instructions.
View termProcédure anormale
A specific set of steps followed by pilots to address system malfunctions or unusual situations not classified as emergencies.
View termProcédures mémorisées
A set of critical procedures that flight crew must perform from memory during certain emergencies without consulting checklists first.
View termSortie de Piste
An incident where an aircraft veers off or overruns the runway surface during take-off or landing.
View termSurchauffe des Freins
A situation in which the aircraft's braking system exceeds safe operating temperatures, potentially reducing effectiveness or causing damage.
View termSurchauffe Hydraulique
A condition in which the aircraft hydraulic system exceeds its normal operating temperature limits, potentially leading to system degradation or failure.
View termSystème d'Alerte de Proximité du Sol
An onboard system that alerts pilots if the aircraft is in immediate danger of flying into the ground or an obstacle.
View termSystème d'instruments de secours
An independent set of basic flight instruments that provide critical information in case of primary display failure.
View termSystème de freinage secondaire
A backup braking system used when the primary brake system fails or becomes unavailable.
View termTrappe du Train d'Atterrissage Ouverte
A situation where the landing gear doors remain open after gear extension or retraction, indicating a potential malfunction or aerodynamic hazard.
View termTrousse de premiers secours
A collection of supplies and equipment for use in giving first aid in case of minor injuries or medical needs onboard.
View termTurbulences Sévères
Turbulence causing large, abrupt changes in altitude and/or attitude, usually resulting in momentary loss of control and difficulty in maintaining aircraft control.
View termUrgence Carburant
A condition where an aircraft’s fuel state is such that without immediate landing, safe completion of flight is doubtful.
View termUrgence médicale
A critical health-related situation on board requiring immediate attention and possible diversion to the nearest suitable airport.
View termUtilisation De La Sortie Sur L'aile
The operation of over-wing emergency exits by passengers or crew during evacuation procedures, usually in the case of land or water evacuations.
View termUtilisation du masque à oxygène par l'équipage
The action taken by flight crew to don oxygen masks during situations such as smoke, fumes, or cabin depressurization.
View termUtilisation Du Radeau De Sauvetage
The procedure of deploying and utilizing inflatable life rafts by crew and passengers following a water landing, in accordance with emergency protocols.
View termVitesse Indiquée Non Fiable
A condition where the airspeed readings provided by the pitot-static system are incorrect or inconsistent, potentially leading to hazardous flight control inputs.
View termVol En Instruments Dégradés
Flight conducted with limited or failed cockpit instruments, typically requiring reliance on backup or standby indicators for basic attitude, navigation, or altitude references.
View termÉmetteur de localisation d'urgence
A radio beacon automatically activated to transmit a distress signal, assisting search and rescue in locating an aircraft in distress.
View termÉtat de Carburant Faible
A condition where the fuel remaining is less than planned final reserve but not yet an emergency.
View termÉvacuation de la Cabine
An emergency procedure where passengers and crew exit the aircraft rapidly using all available exits, typically initiated after landing or in a critical situation.
View term