flight control malfunction

system n abbreviated visual indicator system (глиссады) acceleration warning system accessory power system acoustical measurement system actuating system (механическая) aerial spraying system (например, удобрений) aerodrome alert system aerodrome approach control system aerodrome drainage system aerodrome marking system aerodynamic roll system aileron control system aileron trim system aileron trim tab control system air bleed system (от компрессора) air borne system air brake system air conditioning system (в кабине воздушного судна) air cooling system aircraft control system aircraft electric system aircraft heating system aircraft identification system aircraft integrated data system aircraft landing measurement system aircraft pneumatic system aircraft system aircraft warning system air data computer system airfield lighting system air humidifying system air induction system air-interpreted system airport communication system air pressurization system (кабины) air starting system air surveillance system air traffic audio simulation system (для тренажеров) air traffic control system airway system airworthiness control system alerting system altitude alert system angle guidance system angle-of-attack, slip and acceleration warning system angle-of-attack warning system anticollision lights system anti-icing system (постоянного действия) antiskid system antisurge system (двигателя) approach guidance nose-in to stand system approach lighting system (к ВПП) approach radar system approach system area forecast system (погоды) area navigation system artificial feel system associated aircraft system astronavigation system attitude control system (в полете) audio system augmented lift system noise augmented system autoalarm system autoland system automated data interchange system automated navigation system automated radar terminal system automatic approach system automatic feathering system automatic flight control system automatic landing system automatic monitor system automatic stabilization system (воздушного судна) automatic test system autopilot system autothrottle system (двигателя) autotrim system auxiliary hydraulic system aviation safety reporting system avionic system baggage-clearance system baggage-dispensing system baggage-handling system baggage-tracing system bank counteract system (при отказе одного из двигателей) beam approach beacon system beam-rider system blind landing system blowaway jet system braking system breather system (двигателя) build-in test system cabin heating system cabin temperature control system cable control system calibrate the system calibration system (напр. сигналов) caution system circulating oil system (двигателя) closed cooling system code letter system collective pitch control system (несущего винта) collision avoidance system collision prevention system color coded system Commission for basic Systems compass system compass system coupling unit conditioning-pressurization system (гермокабины) conflict alert system constant speed drive system containment system (фюзеляжа) control system control system load cooling system crew oxygen system crossbar approach lighting system (к ВПП) customs accelerated passenger inspection system cyclic pitch control system (несущего винта) data communication system data handling system data interchange system data link system data processing system data-record system data switching system data system day marking system (объектов в районе аэродрома) defueling system dehydrating system (межстекольного пространства) deicing system (переменного действия) determine air in a system deviation warning system digital flight guidance system dimmer system (напр. экрана локатора) direct-address transponder system direct lift control system discrete address beacon system discrete communication system distance measuring system docking system (воздушного судна с трапом) Doppler computer system (путевой скорости и угла сноса) drainage system drain system dual autoland system dual-channel system (оформления пассажиров) dual ignition system (топлива в двигателе) early warning system electrical generating system electronic engine control system electronic landing aids system emergency brake system emergency hydraulic system emergency lighting system emergency power system emergency shutdown system (двигателя) emergency system (для применения в случае отказа основной) emergency uplock release system (шасси) emergency warning system empennage anti-icing system (постоянного действия) engine anti-icing system (постоянного действия) engine breather system engine control system engine deicing system (переменного действия) engine fuel system engine starting system engine start system engine throttle interlock system engine vent system engine vibration indicating system environmental control system equipment environment control system (воздушного судна) environment control system noise exhaust system (двигателя) exhaust system manifold exhaust system muffler exterior lighting system (посадочные фары, габаритные огни) external electrical power system external load sling system (на вертолете) fail-operative system (сохраняющая работоспособность при единичном отказе) feedback control system feed system (напр. топливом) feel system fin hydraulic system fire detection system fire extinguisher system fire-protection system fire warning system fixed-time dissemination system flaps asymmetry warning system flaps drive system flaps interconnection system flight control boost system flight control gust-lock system (при стоянке воздушного судна) flight control system flight crew oxygen system flight director system flight director system control panel flight environment data system (условий полета) flight inspection system flight management computer system flight management system flight operations system flight recorder system flight simulation system fog dispersal system (в районе ВПП) follow-up cable system follow-up system foot-pound system fuel cross-feed system fuel dip system fuel dump system fuel enrichment system fuel feed system fuel flowmeter system fuel gravity system fuel indicating system fuel injection system fuel jettisoning system (fuel jettisonning system) fuel management system fuel manifold drain system fuel preheat system (на входе в двигатель) fuel storage system fuel supply system fuel system fuel usage system (из баков) gas-cooled system general alarm system generation system generator autoparalleling system glide-path landing system gravity lubricating system (двигателя) ground control system (полетом) ground guidance system ground proximity warning system ground-referenced navigation system ground shift system guidance system guide beam system gyro-magnetic compass system gyro system hazard information system heating system heat system helicopter control system high-intensity lighting system (на аэродроме) high-pressure fuel system hijack alarm system (воздушного судна) hydraulic control boost system hydraulic starting system (двигателя) hydraulic system ice protection system ignition system illuminating system (приборов в кабине экипажа) independent starting system (двигателя) indicating system individual ventilation system inertial control system inertial navigation system inertial sensor system instrument failure warning system instrument guidance system instrument landing system integrated automatic system integrated control system integrated system of airspace control integrated world-wide system (управления полетами) intercommunication system intercooler system interlocking system interlock system international meteorological system interphone system jamming system (радиосигналов) jet deviation control system landing gear indication system landing guidance system landing system landline system lateral control system (воздушным судном) leading edge flap system lead-in lighting system (при заруливании на стоянку) life support system (воздушного судна) load feel system (на органах управления) load grip system localizer antenna system longitudinal control system (воздушным судном) long-range air navigation system loop circuit system low level wind-shear alert system lubrication system Mach-feel system Mach trim system malfunction detection system mandatory reporting system (на борт воздушного судна) mapping radar system maximum speed limiting system mechanical cooling system mechanized baggage dispensing system mileage system (построения тарифов) multichannel circuit system nacelle cooling system (двигателя) national airspace system navigation system navigation system selector noise annoyance rating system nosewheel steering follow-up system nozzle control system oil dilution system oiling system oil scavenge system omnibearing distance system onboard weight and balance system one-step inspection system (пассажиров путем совмещения паспортного и таможенного контроля) open cooling system organized track system passenger address system passenger bypass inspection system (перед вылетом) passenger oxygen system phone system pictorial navigation system (информации) pilot-controller system pilot-interpreted navigation system pitch control system pitch limit system (воздушного винта) pitot-static system platform stabilization system power-boost control system power-operated control system precision approach lighting system precision approach radar system preprocessed data system pressure control system pressure fueling system pressure fuel system pressurization system priming system (топлива в двигатель) propeller feathering system propeller pitch control system prove the system proximity warning system (воздушных судов) public address system push-pull control system (при помощи тяг) Q-feel system radar airborne weather system radar backup system radar guidance system radar homing system radar navigation system radar scanning beam system radar side looking system radar system radio-beacon landing system radio-beacon system radio navigation system radio system radiotelephony network system (воздушных судов) recording system reference system remote control system reproducing system reservations system (мест) restore the system return line system (рабочей жидкости в бак) reversible control system rho-theta navigation system robot-control system (полетом) rotor drive system rotor governing system rudder control system rudder limiting system rudder trim tab control system run fluid through the system runway classification system runway lead-in lighting system runway lighting system satellite-aided tracking system (за воздушным движением) scanning beam guidance system sealing system (напр. люков) search and rescue system selective calling system (на связь) self-contained navigation system self-contained oil system self-contained starting system self-test system shock absorption system short range radio navigation system simple approach lighting system (к ВПП) slip warning system slope indicator system smoke detection system (в кабине воздушного судна) speed brake system speed control system (полета) spraying system (удобрений) stall barrier system stall prevention system (на крыло) stall warning system (на крыло) standard approach system standard beam approach system standby system starting system static discharging system static system (система статического давления) steering system stick shaker system (при достижении критического угла атаки) suppressor exhaust system switching system system leakage device system of monitoring visual aids (на аэродроме) system of units (измерения) system preservation filler systems compartment systems operator pilot Systems Study section (ИКАО) tab control system tactical air navigation system takeoff monitoring system tank pressurizating system taxiing guidance system teletype broadcast system test the system three-axis autostabilization system thrust augmentor system (двигателя) thrust reverser interlock system thrust reverser system thrust system tracking system (за полетом) traffic alert system transmission rotor drive system trim system (воздушного судна) triplex system turn off the system turn on the system two-frequency glide path system two-frequency localizer system two-shot fire extinguishing system unarm the system unassisted control system utility hydraulic system ventilation system (кабины) vent system visual approach slope indicator system visual docking guidance system voice communication system voice recorder system (экипажа) warning flag movement system warning system warning system control unit water injection system (на входе в двигатель) water supply system weight system (багажа или груза) wind flaps control system window demisting system (межстекольного пространства) windshear warning system windshield anti-icing system wing anti-icing system wing flap control system wing-flap system wing spoiler system wire collision avoidance system wireless system wire system World Geographic Reference system

abandon the takeoff abeam the left pilot position abeam the right pilot position abort the flight abort the takeoff above the glide slope absorb the shock energy accelerate the rotor accelerate to the speed adhere to the flight plan adhere to the track adjust the cable adjust the compass adjust the engine adjust the heading advice to follow the controller's advance affect the regularity affect the safety align the aircraft align the aircraft with the center line align the aircraft with the runway alter the heading amplify the signal apparent drift of the gyro apply the brake approach the beam approve the limitations approve the tariff area of coverage of the forecasts arrest the development of the stall arrive over the aerodrome assess the damage assess the distance assess the suitability assume the control attain the power attain the speed at the end of at the end of segment (полета) at the end of stroke (поршня) at the ground level at the start of cycle at the start of segment (полета) avoid the obstacle backward movement of the stick balance the aircraft balance the control surface balance the propeller bear on the accident before the turbine below the glide slope below the landing minima bend the cotterpin ends be off the track be on the level on the hour block the brake boundary of the area brake the propeller break the journey bring the aircraft back bring the aircraft out by altering the heading cage the gyroscope calibrate the compass calibrate the indicator calibrate the system calibrate the tank cancel the drift cancel the flight cancel the forecast cancel the signal capture the beam carry out a circuit of the aerodrome carry out the flight center the autopilot center the wiper change the frequency change the pitch change the track check the reading chop the power circle the aerodrome clean the aircraft clean up the crack clearance of the aircraft clearance over the threshold clear for the left-hand turn clear the aircraft clear the obstacle clear the point clear the runway climb on the course close the buckets close the circuit close the flight come clear of the ground commence the flight commence the landing procedure compare the readings compensate the compass compensate the error compile the accident report complete the circuit complete the flight complete the flight plan complete the turn compute the visual range conditions beyond the experience conditions on the route considering the obstacles construct the procedure containerize the cargo continue operating on the fuel reserve continue the flight continue the takeoff contribute towards the safety control the aircraft control the pitch convert the frequency convey the information correct the trouble correspond with the operating minima counteract the rotor torque coverage of the chart cover the route crosscheck the readings cross the airway data on the performance decelerate in the flight decelerate the aircraft to decrease the deviation decrease the pitch decrease the speed de-energize the bus define the failure deflate the tire deflect the control surface (напр. элерон) delay the turn delimit the runway delimit the taxiway delineate the runway delineate the taxiway deliver the baggage deliver the clearance denote the obstacle denoting the obstacle depart from the rules departure from the standards depress the pedal detach the load detach the wing determinate the cause determine amount of the error determine the delay determine the extent of damage determine the friction determine the sign of deviation detract from the safety development of the stall deviate from the flight plan deviate from the glide slope deviate from the heading deviation from the course deviation from the level flight discharge the cargo disclose the fares discontinue the takeoff disengage the autopilot displace the center-of-gravity disregard the indicator disseminate the forecast drain the tank draw the conclusion drift off the course drift off the heading drop the nose duck below the glide path ease the aircraft on effect adversely the strength (напр. фюзеляжа) elevation of the strip eliminate the cause of eliminate the hazard eliminate the ice formation eliminate the source of danger (для воздушного движения) enable the aircraft to endanger the aircraft endange the safety endorse the license energize the bus enforce rules of the air engage the autopilot ensure the adequate provisions enter the aircraft enter the aircraft stand enter the airway enter the final approach track enter the spin enter the tariff into force enter the traffic circuit enter the turn entry into the aerodrome zone entry into the flare erection of the gyro establish the characteristics establish the flight conditions establish the procedure exceeding the stalling angle exceed the stop execute the manoeuvre execute the turn expedite the clearance express the altitude extend the agreement extend the landing gear extend the legs extreme aft the center-of-gravity extreme forward the center-of-gravity eye height over the threshold fail into the spin fail to follow the procedure fail to observe the limitations fail to provide the manuals fall into the spin feather the propeller file the flight plan first freedom of the air flight inbound the station flight outbound the station flight over the high seas flight under the rules fly above the weather fly at the altitude fly into the sun fly into the wind fly on the autopilot fly on the course fly on the heading fly the aircraft 2. пилотировать воздушное судно fly the beam fly the circle fly the glide-slope beam fly the great circle fly the heading fly the rhumb line fly under the autopilot fly under the supervision of focus the light follow the beam follow the glide slope follow up the aircraft forfeit the reservation freedom of the air fuel the tank fulfil the conditions gain the air supremacy gain the altitude gain the glide path gain the power gain the speed gather the speed get into the aerodrome get on the course get the height give the way go out of the spin govern the application govern the flight govern the operation grade of the pilot licence guard the frequency handle the baggage handle the flight controls have the runway in sight head the aircraft into wind hold on the heading hold over the aids hold over the beacon hold the aircraft on the heading hold the brake hold the heading on the compass hold the position hold the speed accurately hover at the height of hovering in the ground effect identify the aerodrome from the air identify the aircraft identify the center line impair the operation impair the safety impose the limitations in computing the fuel in conformity with the specifications increase a camber of the profile increase the pitch increase the speed indicate the location from the air inherent in the aircraft initiate the turn install in the aircraft install on the aircraft intercept the beam intercept the glide slope International Relations Department of the Ministry of Civil Aviation interpretation of the signal in the case of delay in the event of a mishap in the event of malfunction introduction of the corrections issue the certificate jeopardize the flight judge the safety keep clear of the aircraft keep out of the way keep tab on the fleet keep the aircraft on keep the altitude keep the ball centered keep the pace keep to the minima kick off the drift kill the landing speed landing off the aerodrome land into the wind land the aircraft latch the pitch stop (лопасти воздушного винта) latch the propeller flight stop lateral the center-of-gravity lay the route lead in the aircraft lead out the aircraft leave the airspace leave the altitude leave the plane leave the runway level the aircraft out lie beyond the range line up the aircraft load the gear load the generator load the structure lock the landing gear lock the landing gear down lock the landing gear up lock the legs longitudinal the center-of-gravity lose the altitude lose the speed loss the control lower the landing gear lower the legs lower the nose wheel maintain the aircraft at readiness to maintain the altitude maintain the course maintain the flight level maintain the flight procedure maintain the flight watch maintain the flying speed maintain the heading maintain the parameter make a complaint against the company make the aircraft airborne make the course change make the reservation manipulate the flight controls mark the obstacle mean scale of the chart meet the airworthiness standards meet the conditions meet the specifications misjudge the distance modify the flight plan monitor the flight monitor the frequency moor the aircraft mount on the frame move off from the rest move the blades to higher move the pedal forward name-code of the route neglect the indicator note the instrument readings note the time observe the conditions observe the instruments observe the readings obtain the correct path obtain the flying speed obtain the forecast offer the capacity off-load the pump on the base leg on the beam on the cross-wind leg on the down-wind leg on the eastbound leg on the final leg on the left base leg on the speed on the upwind leg open the buckets open the circuit open the door inward outward operate from the aerodrome operate under the conditions overcome the obstacle overcome the spring force overflying the runway overpower the autopilot overrun the runway overshoot capture of the glide slope over the territory over the top over the wing park in the baggage participation in the investigation passing over the runway pass the signal past the turbine perform the service bulletin pick up the signal pick up the speed pilot on the controls pitch the nose downward place the aircraft place the flaps in plane of symmetry of the aeroplane plot the aircraft potential hazard to the safe power the bus present the minimum hazard preserve the clearance pressurize the bearing produce the signal profitability over the route prolongation of the rating properly identify the aircraft protect the circuit prove the system pull out of the spin pull the aircraft out of pull the control column back pull the control stick back pull up the helicopter puncture the tire push the aircraft back push the aircraft down push the control column push the control stick put into the spin put on the course put the aircraft into production put the aircraft on the course put the aircraft over raise the landing gear reach the altitude reach the flight level reach the glide path reach the speed reach the stalling angle read the drift angle read the instruments receive the signal record the readings recover from the spin recover from the turn recovery from the manoeuvre recovery from the stall recovery from the turn rectify the compass reduce the hazard reestablish the track regain the glide path regain the speed regain the track register the aircraft release the aircraft release the landing gear release the landing gear lock release the load release the uplock relocate the plane's trim remedy the defect remedy the trouble remove the aircraft remove the crack remove the tangle render the certificate renew the license renew the rating replan the flight report reaching the altitude report reaching the flight level report the heading reset the gyroscope restart the engine in flight restore the system restrict the operations resume the flight resume the journey retain the lever retract the landing gear return the aircraft to service reverse the propeller roll in the aircraft roll into the turn roll left on the heading roll on the aircraft roll on the course roll out of the turn roll out on the heading roll out the aircraft roll right on the heading rotate the aircraft rotate the bogie rules of the air run fluid through the system run off the runway run out the landing gear schedule the performances seat the brush second freedom of the air secure the mishap site select the course select the flight route select the frequency select the heading select the mode select the track angle separate the aircraft serve out the service life set at the desired angle set the course set the flaps at set the heading set the propeller pitch set the throttle lever set up the speed shift the center-of-gravity shop out the skin simulate the instruments responses slacken the cable slave the gyroscope smooth on the heading smooth out the crack smooth out the dent smooth the signal space the aircraft spin the gyro rotor state instituting the investigation (авиационного происшествия) state submitting the report (об авиационном происшествии) steady airflow about the wing steer the aircraft stop the crack propagation stop the leakage submit the flight plan substitute the aircraft supervision approved by the State supply the signal swing the compass swing the door open switch to the autopilot switch to the proper tank takeoff into the wind take off power to the shaft take over the control take the bearing take the energy from take the readings take the taxiway take up the backlash take up the position tap air from the compressor terminate the agreement terminate the control terminate the flight test in the wind tunnel test the system the aircraft under command the route to be flown the route to be followed the runway is clear the runway is not clear the search is terminated through on the same flight throughout the service life tighten the turn time in the air time the valves titl of the gyro to define the airspace transfer the control transit to the climb speed trim the aircraft turn into the wind turn off the system turn on the system turn the proper tank on unarm the system uncage the gyroscope unfeather the propeller unlatch the landing gear unlatch the pitch stop (лопасти воздушного винта) unstall the aircraft unstick the aircraft uplift the freight violate the law wander off the course warn the aircraft wind the generator with decrease in the altitude withdraw from the agreement with increase in the altitude within the frame of within the range withstand the load work on the aircraft write down the readings

acknowledgement of receipt actual time of arrival aerodrome of call aerodrome of departure aerodrome of intended landing aerodrome of origin aircraft center - of - gravity airport of departure airport of destination airport of entry allocation of duties allocation of frequencies allotment of frequencies alternative means of communication amount of controls amount of feedback amount of precipitation angle of allowance angle of approach angle of approach light angle of ascent angle of attack angle of climb angle of coverage angle of crab angle of descent angle of deviation angle of dip angle of dive angle of downwash angle of elevation angle of exit angle of glide angle of incidence angle of indraft angle of lag angle of landing angle of pitch angle of roll angle - of - sideslip transmitter angle of sight angle of slope angle of stall angle of turn angle of upwash angle of visibility angle of yaw antimeridian of Greenwich apparent drift of the gyro application of tariffs approach rate of descent arc of a path arc of equal bearings area of coverage area of coverage of the forecasts area of occurence area of responsibility arrest the development of the stall assessment of costs assignment of duties Association of European Airlines Association of South Pacific Airlines assumption of control message at a speed of at the end of at the end of segment (полета) at the end of stroke (поршня) at the start of cycle at the start of segment (полета) aviation-to-aviation type of interference avoidance of collisions avoidance of hazardous conditions axial of bank axis of precession axis of roll axis of rotation axis of yaw backward movement of the stick be out of trim best rate of climb bias out of view bill of entry bill of lading blanketing of controls body of compass card boundary of the area Bureau of Administration and Services camber of a profile care of passengers carriage of passengers carry out a circuit of the aerodrome cause of aircraft trouble center of air pressure center of depression center of force center of gravity center of mass center of pressure Central Agency of Air Service certificate of revaccination certificate of safety for flight certificate of vaccination choice of field class of lift clearance of goods clearance of obstacles clearance of the aircraft coefficient of heat transfer come clear of the ground complex type of aircraft composition of a crew concept of separation conditions of carriage cone of rays congestion of information continuity of guidance contour of perceived noise control of an investigation correlation of levels country of arrival country of origin course of training coverage of the chart curve of equal bearings danger of collisions degree of accuracy degree of freedom degree of skill degree of stability denial of carriage Department of Transportation derivation of operating data determination of cause determine amount of the error determine the extent of damage determine the sign of deviation development of the stall direction of approach direction of rotation direction of turn duration of noise effect elevation of the strip elevation setting of light units eliminate the cause of eliminate the source of danger (для воздушного движения) end of runway enforce rules of the air en-route change of level erection of the gyro estimated position of aircraft estimated time of arrival estimated time of departure estimated time of flight even use of fuel extension of ticket validity extent of damage facilitate rapid clearance of factor of safety filing of statistical data first freedom of the air first type of occurence flow of air traffic fly under the supervision of for reasons of safety freedom of action freedom of the air frequency of operations gathering of information general conditions of carriage General Conference of Weights and Measure General Department of International Air Services of Aeroflot get out of control given conditions of flight go out of control go out of the spin grade of service grade of the pilot licence grading of runway height at start of retraction hover at the height of identification of signals inconventional type of aircraft increase a camber of the profile indication of a request in interests of safety initial rate of climb initial stage of go-around inlet angle of attack intake angle of attack integrated system of airspace control interception of civil aircraft International Co-ordinating Council of Aerospace Industries Association International Council of Aircraft Owner and Pilot Associations International Federation of Air Line Pilots' Associations International Federation of Air Traffic Controllers' Associations International Relations Department of the Ministry of Civil Aviation interpretation of the signal interpretation of weather chart intersection of air routes in the case of delay in the event of a mishap in the event of malfunction introduction of the corrections keep clear of rotor blades keep clear of the aircraft keep out of the way layout of aerodrome markings layout of controls lessee of an aircraft level of airworthiness level of safety level of speech interference limiting range of mass line of flight line of position line of sight location of distress loss of control loss of pressurization loss of strength magnetic orientation of runway margin of error margin of lift margin of safety margin of stability marking of pavements mean scale of the chart means of communication means of identification meridian of Greenwich method of steepest descent mode of flight moment of inertia moment of momentum name-code of the route onset of wind operation of aircraft out of ground effect out of service overshoot capture of the glide slope period of rating currency personal property of passengers pilot's field of view plane of rotation plane of symmetry of the aeroplane point of arrival point of call point of departure point of destination point of discontinuity point of intersection point of loading point of no return point of origin point of turn-around point of unloading portion of a flight portion of a runway prevention of collisions primary element of structure prohibition of landing prolongation of the rating promotion of safety proof of compliance propagation of sound protection of evidence pull out of the spin pull the aircraft out of radar transfer of control radius of curvature range of coverage range of motion range of revolutions range of visibility range of vision rate of climb rate of closure rate of descent rate of disagreement rate of duty rate of exchange rate of flaps motion rate of growth rate of pitch rate of roll rate of sideslip rate of trim rate of turn rate of yaw reception of telephony record of amendments record of revisions regularity of operations relay of messages release of control removal of aircraft removal of limitations replacement of parts representative of a carrier reservation of a seat retirement of aircraft right - of - entry roll out of the turn rules of the air safe handling of an aircraft second freedom of the air second type of occurence selection of engine mode sequence of fuel usage (по группам баков) sequence of operation showers of rain and snow simultaneous use of runways site of occurrence slope of level (шумов) source of danger Standing Committee of Performance start of leveloff start of takeoff state of aircraft manufacture state of discharge (аккумулятора) state of emergency state of occurence state of transit steadiness of approach steady rate of climb structure of fronts submission of a flight plan system of monitoring visual aids (на аэродроме) system of units (измерения) table of cruising levels table of intensity settings table of limits table of tolerance take out of service target level of safety temporary loss of control termination of control theory of flight time of lag time of origin titl of the gyro top of climb transfer of control transmission of telephony transmit on frequency of triangle of velocities under any kind of engine failure uneven use of fuel unit of measurement velocity of sound wall of overpressure warn of danger within the frame of working language of ICAO zone of intersection zone of silence