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Question 68-1 : The yaw damper system acts on ? [ Result topography ]

The rudder without moving the rudder pedals

exemple 168 The rudder without moving the rudder pedals.

Question 68-2 : The main inputs to the flight envelope protection system are .1 gpws signals.2 acas signals.3 angle of attack.4 bank angle.the combination that regroups all of the correct statements is ?

3 4

exemple 172 3, 4.

Question 68-3 : The flight envelope protection system prevents the aircraft from exceeding the limits of the following parameters among others .1 n1.2 angle of attack.3 speed.4 pitch attitude.5 flight level.the combination that regroups all of the correct statements is ?

2 3 4

Admin .flight envelope protection is a human machine interface extension of an aircraft's control system that prevents the pilot of an aircraft from making control commands that would force the aircraft to exceed its structural and aerodynamic operating limits .n1 is monitored by the electronic engine control eec the eec provides n1 and n2 redline overspeed protection and limits the maximum thrust .flight level is captured and maintained by the autopilot and protection is given by the altitude warning alert module .the flight envelope protection system in case of an imminent stall will reduce the pitch attitude to decrease the angle of attack in order to regain speed .the flight envelope protection system will also prevent an excessive climbing attitude which will lead to a stall or an excessive descending attitude which will lead to an overspeed condition .the stall protection function and the overspeed protection function apply to both mechanical/conventionnal and fly by wire control systems but other functions e g pitch or bank limitation can only apply to fly by wire control systems exemple 176 2, 3, 4.

Question 68-4 : The flight envelope protection function s consist s in . 1 alerting the flight crew in case of dangerous proximity with the ground. 2 avoiding midair collision. 3 preventing the aircraft from exceeding some aerodynamic limits. the combination that regroups all of the correct statements is ?

3


Question 68-5 : When the yaw damper system sends motion orders to the rudder ?

No feedback is provided on the rudder pedals

exemple 184 No feedback is provided on the rudder pedals.

Question 68-6 : An aircraft is in a steady right turn with not enough right rudder slipping turn .the yaw damper system ?

Is not designed to provide a balanced turn

.the yaw damper is fitted to correct for dutch roll

Question 68-7 : An aircraft is in a steady left turn with too much left rudder skidding turn .the yaw damper system ?

Is not designed to provide a balanced turn

exemple 192 Is not designed to provide a balanced turn.

Question 68-8 : The commands sent out by the yaw damper computer ?

Are added to or substracted from the rudder deflection orders sent out by the pilot or the autopilot

exemple 196 Are added to or substracted from the rudder deflection orders sent out by the pilot or the autopilot.

Question 68-9 : The speed exceeds vmo/mmo and according to the type of aeroplane the overspeed protection function can .1 extend the speed brakes.2 reduce thrust to idle.3 inhibit the pitch trim orders in the nose down direction.the combination that regroups all of the correct statements is ?

3

Cqb15 august 2012..the stall protection function and the overspeed protection function apply to both mechanical/conventionnal and fly by wire control systems but other functions e g pitch or bank limitation can only apply to fly by wire control systems . ebbr1000 .i asked the question to a instructor and pilot for his the good reaction is reduce thrust to idle to decrease the speed in the answer if we inhibit the trim in the nose down position the speed will increase maybe is not good written ..this is a protection function when do we want to descend at vmo/mmo limits when we have a loss of cabin pressurization .the protection can not reduce thrust without the pilots decision in some case you need to maintain a certain amount of thrust to run correctly the anti icing system which picks up some air from the compressor .this system will invite the pilot to take decision such as extend the speed brakes decrease thrust or reduce the rate of descent exemple 200 3.

Question 68-10 : The yaw damper system sends a motion order to the rudder if the yawing rate of the aircraft ?

Is not constant

exemple 204 Is not constant.

Question 68-11 : The flight envelope protection system prevents the aircraft from exceeding the limits of the following parameters among others . 1 cabin altitude. 2 bank angle. 3 angle of attack. 4 speed. 5 pitch attitude. the combination that regroups all of the correct statements is ?

2 3 4 5

exemple 208 2, 3, 4, 5.

Question 68-12 : The yaw damper system is operative ?

During manual or automatic flight

exemple 212 During manual or automatic flight.

Question 68-13 : The flight envelope protection function s consist s in .1 automatically performing an evasion manoeuvre if necessary.2 preventing the aircraft from exceeding the limits for specific flight parameters.3 alerting the flight crew in case of dangerous proximity with a threatening traffic.4 ?

2

exemple 216 2

Question 68-14 : The flight envelope protection fep can include .1 stall protection.2 the overspeed protection.3 the maximum vertical speed protection.the combination that regroups all of the correct statements is ?

1 2

Admin .the stall protection function and the overspeed protection function of the flight envelope protection fep apply to both mechanical/conventionnal and fly by wire control systems but other functions e g pitch or bank limitation can only apply to fly by wire control systems exemple 220 1, 2.

Question 68-15 : At high angles of attack and according to the type of aeroplane the stall protection system can .1 inhibit the pitch trim orders in the nose up direction.2 retract the speed brakes.3 increase thrust.the combination that regroups all of the correct statements is ?

1 3

Cqb15 august 2012..a stall protection system is a part of the flight envelope protection fep of an aircraft .on airbus you have the 'alpha floor' protection which is an auto throttle mode that selects full thrust to prevent the aircraft from stalling .the max angle of attack is alpha max and in normal law normal flight mode this can not be exceded exemple 224 1, 3.

Question 68-16 : The automatic power control system autothrottle of a transport airplane has the following mode s . 1 capture and holding of speeds. 2 capture and holding of mach number. 3 capture and holding of flight angle of attack. 4 capture and holding of n1 or epr engine power ratio . 5 capture and holding ?

1 2 4

exemple 228 1, 2, 4

Question 68-17 : An airplane is cruising at fl 220 the auto throttle maintains a constant cas if the oat decreases the mach number ?

Remains constant

Admin .oat outside air temperature .if temperature changes the tas will change but cas and mach number will remain constant .cas = 1/2 rho tas². the auto throttle maintains a constant cas thus if oat decreases = 'rho' will increase .in order to maintains a constant cas tas will decrease cas will not change .the decrease in temperature will also decrease the local speed of sound mach formula is .m = tas/lss.tas must decrease if oat decreases to maintain a constant cas .lss decreases if oat decreases .the mach number remains constant exemple 232 Remains constant.

Question 68-18 : An aeroplane is in steady descent the auto throttle maintains a constant calibrated airspeed if the total temperature remains constant the mach number ?

Decreases

Admin .for those questions use the very simple 'ertm' diagram . 1037.the cas line is vertical because the question states descent constant calibrated airspeed . ertm for e as/ r as rectified air speed or cas / t as/ m ach .cas = 1/2 rho v².density will increase during descent and in order to maintain constant cas only v tas can be reduced .mach = tas / local speed of sound.local speed of sound varies only with temperature and the question states total temperature remains constant thus if tas decreases and lss remains constant the mach number decreases exemple 236 Decreases.

Question 68-19 : An aeroplane is in steady cruise at flight level 270 the auto throttle maintains a constant calibrated airspeed if the static air temperature increases the mach number ?

Remains constant

If oat increases density decreases with higher temperature air is expanding density is decreased .cas = 1/2 x density x tas²..cas is constant and density decreases then tas must increase ..mach = tas / local speed of sound..local speed of sound varies only with temperature lss varies with the square root of absolute temperature .formula lss = 39 x square root of oat+273 thus if tas increases and lss increases the mach number remains constant exemple 240 Remains constant.

Question 68-20 : An aeroplane is in steady climb the auto throttle maintains a constant calibrated airspeed if the total temperature remains constant the mach number ?

Increases

Admin .for those questions use the very simple 'ertm' diagram . 1037.cas = 1/2 rho tas².rho is decreasing when altitude increases to maintain a constant cas tas must increases .mach = tas / local speed of sound.local speed of sound varies only with temperature and the question states 'total temperature remains constant' thus lss remains constant .since tas increases mach number will increase exemple 244 Increases.

Question 68-21 : An aircraft is equipped with an autopilot and an auto throttle when the altitude hold mode alt hold is active ?

The indicated airspeed ias is maintained constant by the auto throttle system

.basically the auto throttle will maintain speed in most cases but in a climb or the take off the auto throttle might be asked to maintain n1 or an epr but the usual situation in the cruise where we are likey to have alt hold engaged is that the altitude will be held by the pitch channel and speed maintained by the auto throttle setting .obviously maintaining altitude and airspeed with just the pitch channel is not an option one would have to have auto throttle to be able to do two things at once .what the question is trying to get over is that unlike straight and level flight of a light aircraft power is speed and pitch is altitude exemple 248 The indicated airspeed (ias) is maintained constant by the auto-throttle system.

Question 68-22 : During the ground run take off phase the auto throttles allow to ?

Hold n1

During take off autothrottle will hold constant thrust and allow the aircraft to accelerate exemple 252 Hold n1.

Question 68-23 : The auto throttles enables to hold .1 a true airspeed. 2 a mach number. 3 an indicated airspeed. 4 a n1 thrust .the combination regrouping all the correct statements is ?

2 3 4

.there are two parameters that an a/t autothrottle can maintain or try to attain speed and thrust .in speed mode the throttle is positioned to attain a set target speed tas or mach this mode controls aircraft speed within safe operating margins .for example if the pilot selects a target speed which is slower than stall speed or a speed faster than maximum speed a/t will maintain a speed closest to the target speed that is within the range of safe speeds .in thrust mode the engine is maintained at a fixed power setting n1 according to the different flight phases for example during takeoff a/t maintains a constant takeoff power until takeoff mode is finished .during climb a/t maintains a constant climb power in descent a/t retards the throttle to idle position and so on when a/t is working in thrust mode speed is controlled by pitch or the control column and not protected by a/t exemple 256 2, 3, 4.

Question 68-24 : The purpose of auto throttle is ?

To maintain constant engine power or aeroplane speed

exemple 260 To maintain constant engine power or aeroplane speed.

Question 68-25 : The auto throttle system of a transport aeroplane has the following mode s .1 capture and holding of ias.2 capture and holding of mach number.3 capture and holding of an altitude.4 capture and holding of n1 or epr.5 capture and holding of flight paths. the combination that regroups all of the ?

1 2 4

exemple 264 1, 2, 4.

Question 68-26 : The auto throttle . 1 can capture and maintain the n1 rpm. 2 can capture and maintain the n2 rpm. 3 can capture and maintain an ias. 4 is always engaged automatically at the same time as the autopilot. the combination that regroups all of the correct statements is ?

1 3

exemple 268 1, 3.

Question 68-27 : When cruising the autothrottle system can be engaged in the following mode s holding of constant .1 tas.2 ias .3 mach number.the combination that regroups all of the correct statements is ?

2 3

exemple 272 2, 3.

Question 68-28 : The autothrottle system ?

Can be used for take off

exemple 276 Can be used for take-off.

Question 68-29 : During a manual ils final approach the auto throttle ?

Can be operated in the speed mode holding of ias

exemple 280 Can be operated in the speed mode (holding of ias).

Question 68-30 : During an automatic ils final approach the auto throttle ?

Can be operated in the speed mode holding of ias

Admin .your approach speed must be stabilized during an automatic ils final approach speed is maintained by the speed mode you select a speed on the mcp mode control panel and you push the spd button .you are not looking for a specific thrust during the approach exemple 284 Can be operated in the speed mode (holding of ias).

Question 68-31 : During a climb with the autopilot engaged in the v/s mode holding of vertical speed the auto throttle ?

Can be operated in the speed mode holding of ias

Admin .the v/s mode commands pitch to hold selected vertical speed and engages a/t in speed mode to hold selected airspeed on the boeing 737 'speed mode' engages automatically when v/s engages exemple 288 Can be operated in the speed mode (holding of ias).

Question 68-32 : Considering a modern thrust computer during a steady climb ?

N1 is automatically adjusted as aircraft climbs

exemple 292 N1 is automatically adjusted as aircraft climbs.

Question 68-33 : When an auto throttle system a/thr is engaged in speed mode a/thr is ?

Active

Admin .speed mode autothrottle holds speed in ias/mach display or a performance or limit speed exemple 296 Active.

Question 68-34 : When an automatic thrust control system is in the thrust mode ?

Thrust is set to a computed thrust according to a performance database

Admin .there are two parameters that an a/t autothrottle can maintain or try to attain speed and thrust .in speed mode the throttle is positioned to attain a set target speed tas or mach this mode controls aircraft speed within safe operating margins .for example if the pilot selects a target speed which is slower than stall speed or a speed faster than maximum speed a/t will maintain a speed closest to the target speed that is within the range of safe speeds .in thrust mode the engine is maintained at a fixed power setting n1 according to the different flight phases for example during takeoff a/t maintains a constant takeoff power until takeoff mode is finished .during climb a/t maintains a constant climb power in descent a/t retards the throttle to idle position and so on when a/t is working in thrust mode speed is controlled by pitch or the control column and not protected by a/t exemple 300 Thrust is set to a computed thrust according to a performance database.

Question 68-35 : An automatic thrust control system can be .1 armed.2 active.3 disconnected.the combination regrouping all the correct statements is ?

1 2 3

Revised ecqb03 july 2016 exemple 304 1, 2, 3.

Question 68-36 : When an automatic thrust control system is in the speed mode ?

It maintains the selected airspeed

Revised ecqb03 july 2016 ..speed mode autothrottle holds speed in ias/mach display or a performance or limit speed .there are two parameters that an a/t autothrottle can maintain or try to attain speed and thrust .in speed mode the throttle is positioned to attain a set target speed tas or mach this mode controls aircraft speed within safe operating margins .for example if the pilot selects a target speed which is slower than stall speed or a speed faster than maximum speed a/t will maintain a speed closest to the target speed that is within the range of safe speeds .in thrust mode the engine is maintained at a fixed power setting n1 according to the different flight phases for example during takeoff a/t maintains a constant takeoff power until takeoff mode is finished .during climb a/t maintains a constant climb power in descent a/t retards the throttle to idle position and so on when a/t is working in thrust mode speed is controlled by pitch or the control column and not protected by a/t exemple 308 It maintains the selected airspeed.

Question 68-37 : Landing shall be considered as having been carried out automatically when the autopilot and the auto throttle of an aircraft are disengaged by flight crew ?

During ground roll

exemple 312 During ground roll.

Question 68-38 : A landing is performed automatically when the autopilot and auto throttle ensure good performance from the final approach ?

During the landing roll and sometimes until the aircraft comes to a complete stop

exemple 316 During the landing roll and sometimes until the aircraft comes to a complete stop.

Question 68-39 : The cpdlc messages may concerne .1 route modifications.2 speed changes.3 voice contact request .4 emergency messages.the combination regrouping all the correct statements is ?

1 2 3 4

Admin .cpdlc controller pilot data link communications exemple 320 1, 2, 3, 4.

Question 68-40 : The cpdlc function consists in exchanging messages relative to .1 route modifications.2 crossing constraints.3 transfer of atc center.4 speed changes.the combination which regroups all of the correct statements is ?

1 2 3 4

Admin .cpdlc controller pilot data link communications exemple 324 1, 2, 3, 4.


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