The speed exceeds VMO/MMO and according to the type of aeroplane the overspeed protection function can 1 extend the speed brakes2 reduce thrust to ?
Admission > airport
The yaw damper system sends a motion order to the rudder if the yawing rate of the aircraft ?
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 ?
The yaw damper system operative During manual or automatic flight. Cqb15 august 2012 the stall protection function the overspeed protection function apply to both mechanical/conventionnal 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 question to a instructor pilot his good reaction reduce thrust to idle to decrease speed in answer if we inhibit trim in nose down position speed will increase maybe not good written this 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 pilots decision (in some case you need to maintain a certain amount of thrust to run correctly anti icing system which picks up some air from compressor) this system will invite pilot to take decision such as extend speed brakes decrease thrust or reduce rate of descent. 
The flight envelope protection function s consist s in 1 automatically performing an evasion manoeuvre if necessary2 preventing aircraft from exceeding limits specific flight parameters3 alerting flight crew in case of dangerous proximity with a threatening traffic4 preventing any incursion beyond an atc clearancethe combination that regroups all of correct statements During manual or automatic flight. Cqb15 august 2012 the stall protection function the overspeed protection function apply to both mechanical/conventionnal 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 question to a instructor pilot his good reaction reduce thrust to idle to decrease speed in answer if we inhibit trim in nose down position speed will increase maybe not good written this 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 pilots decision (in some case you need to maintain a certain amount of thrust to run correctly anti icing system which picks up some air from compressor) this system will invite pilot to take decision such as extend speed brakes decrease thrust or reduce rate of descent. 
The flight envelope protection fep can include 1 stall protection2 the overspeed protection3 maximum vertical speed protectionthe combination that regroups all of correct statements During manual or automatic flight. the stall protection function the overspeed protection function of flight envelope protection (fep) apply to both mechanical/conventionnal fly by wire control systems but other functions (e g pitch or bank limitation) can only apply to fly by wire control systems. 
At high angles of attack and according to type of aeroplane stall protection system can 1 inhibit pitch trim orders in nose up direction2 retract speed brakes3 increase thrustthe combination that regroups all of correct statements During manual or automatic flight. Cqb15 august 2012 a stall protection system a part of flight envelope protection (fep) of an aircraft on airbus you have 'alpha floor' protection which an auto throttle mode that selects full thrust to prevent aircraft from stalling the max angle of attack alpha max in normal law (normal flight mode) this can not be exceded. Question 54-8
The automatic power control system autothrottle of a transport airplane has 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 of flight paths the combination regrouping all correct statements During manual or automatic flight. Cqb15 august 2012 a stall protection system a part of flight envelope protection (fep) of an aircraft on airbus you have 'alpha floor' protection which an auto throttle mode that selects full thrust to prevent aircraft from stalling the max angle of attack alpha max in normal law (normal flight mode) this can not be exceded. Question 54-9
An airplane cruising at fl 220 the auto throttle maintains a constant cas if oat decreases mach number During manual or automatic flight. oat outside air temperature if temperature changes tas will change but cas 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 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. Question 54-10
An aeroplane in steady descent the auto throttle maintains a constant calibrated airspeed if total temperature remains constant mach number During manual or automatic flight. for those questions use very simple 'ertm' diagram the cas line vertical because question states descent constant calibrated airspeed ertm e as/r as(rectified air speed or cas)/t as/m ach cas = 1/2 rho v² density will increase during descent 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 the question states total temperature remains constant thus if tas decreases lss remains constant mach number decreases. Question 54-11
An aeroplane in steady cruise at flight level 270 the auto throttle maintains a constant calibrated airspeed if static air temperature increases mach number During manual or automatic flight. If oat increases density decreases (with higher temperature air expanding density decreased) cas = 1/2 x density x tas² cas constant density decreases then tas must increase mach = tas / local speed of sound local speed of sound varies only with temperature (lss varies with square root of absolute temperature formula lss = 39 x square root of (oat+273)) thus if tas increases lss increases mach number remains constant. Question 54-12
An aeroplane in steady climb the auto throttle maintains a constant calibrated airspeed if total temperature remains constant mach number During manual or automatic flight. for those questions use very simple 'ertm' diagram cas = 1/2 rho tas² rho 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 the question states 'total temperature remains constant' thus lss remains constant since tas increases mach number will increase. Question 54-13
An aircraft equipped with an autopilot and an auto throttle when altitude hold mode alt hold active The indicated airspeed (ias) maintained constant the auto throttle system. basically auto throttle will maintain speed in most cases but in a climb or take off auto throttle might be asked to maintain n1 or an epr but usual situation in cruise (where we are likey to have alt hold engaged) that altitude will be held the pitch channel speed maintained the auto throttle setting obviously maintaining altitude airspeed with just pitch channel not an option one would have to have auto throttle to be able to do two things at once what question trying to get over that unlike straight level flight of a light aircraft power speed pitch altitude. Question 54-14
During ground r take off phase auto throttles allow to The indicated airspeed (ias) maintained constant the auto throttle system. During take off autothrottle will hold constant thrust allow aircraft to accelerate. Question 54-15
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 correct statements The indicated airspeed (ias) maintained constant the auto throttle system. there are two parameters that an a/t (autothrottle) can maintain or try to attain speed thrust in speed mode throttle positioned to attain a set target speed (tas or mach) this mode controls aircraft speed within safe operating margins for example if pilot selects a target speed which slower than stall speed or a speed faster than maximum speed a/t will maintain a speed closest to target speed that within range of safe speeds in thrust mode engine maintained at a fixed power setting (n1) according to different flight phases for example during takeoff a/t maintains a constant takeoff power until takeoff mode finished during climb a/t maintains a constant climb power in descent a/t retards throttle to idle position so on when a/t working in thrust mode speed controlled pitch (or control column) not protected a/t. Question 54-16
The purpose of auto throttle To maintain constant engine power or aeroplane speed. there are two parameters that an a/t (autothrottle) can maintain or try to attain speed thrust in speed mode throttle positioned to attain a set target speed (tas or mach) this mode controls aircraft speed within safe operating margins for example if pilot selects a target speed which slower than stall speed or a speed faster than maximum speed a/t will maintain a speed closest to target speed that within range of safe speeds in thrust mode engine maintained at a fixed power setting (n1) according to different flight phases for example during takeoff a/t maintains a constant takeoff power until takeoff mode finished during climb a/t maintains a constant climb power in descent a/t retards throttle to idle position so on when a/t working in thrust mode speed controlled pitch (or control column) not protected a/t. Question 54-17
The auto throttle system of a transport aeroplane has following mode s 1 capture and holding of ias2 capture and holding of mach number3 capture and holding of an altitude4 capture and holding of n1 or epr5 capture and holding of flight paths the combination that regroups all of correct statements To maintain constant engine power or aeroplane speed. there are two parameters that an a/t (autothrottle) can maintain or try to attain speed thrust in speed mode throttle positioned to attain a set target speed (tas or mach) this mode controls aircraft speed within safe operating margins for example if pilot selects a target speed which slower than stall speed or a speed faster than maximum speed a/t will maintain a speed closest to target speed that within range of safe speeds in thrust mode engine maintained at a fixed power setting (n1) according to different flight phases for example during takeoff a/t maintains a constant takeoff power until takeoff mode finished during climb a/t maintains a constant climb power in descent a/t retards throttle to idle position so on when a/t working in thrust mode speed controlled pitch (or control column) not protected a/t. Question 54-18
The auto throttle 1 can capture and maintain n1 rpm 2 can capture and maintain n2 rpm 3 can capture and maintain an ias 4 always engaged automatically at same time as autopilot the combination that regroups all of correct statements To maintain constant engine power or aeroplane speed. there are two parameters that an a/t (autothrottle) can maintain or try to attain speed thrust in speed mode throttle positioned to attain a set target speed (tas or mach) this mode controls aircraft speed within safe operating margins for example if pilot selects a target speed which slower than stall speed or a speed faster than maximum speed a/t will maintain a speed closest to target speed that within range of safe speeds in thrust mode engine maintained at a fixed power setting (n1) according to different flight phases for example during takeoff a/t maintains a constant takeoff power until takeoff mode finished during climb a/t maintains a constant climb power in descent a/t retards throttle to idle position so on when a/t working in thrust mode speed controlled pitch (or control column) not protected a/t. Question 54-19
When cruising autothrottle system can be engaged in following mode s holding of constant 1 tas2 ias 3 mach numberthe combination that regroups all of correct statements To maintain constant engine power or aeroplane speed. there are two parameters that an a/t (autothrottle) can maintain or try to attain speed thrust in speed mode throttle positioned to attain a set target speed (tas or mach) this mode controls aircraft speed within safe operating margins for example if pilot selects a target speed which slower than stall speed or a speed faster than maximum speed a/t will maintain a speed closest to target speed that within range of safe speeds in thrust mode engine maintained at a fixed power setting (n1) according to different flight phases for example during takeoff a/t maintains a constant takeoff power until takeoff mode finished during climb a/t maintains a constant climb power in descent a/t retards throttle to idle position so on when a/t working in thrust mode speed controlled pitch (or control column) not protected a/t. Question 54-20
The autothrottle system Can be used take off. there are two parameters that an a/t (autothrottle) can maintain or try to attain speed thrust in speed mode throttle positioned to attain a set target speed (tas or mach) this mode controls aircraft speed within safe operating margins for example if pilot selects a target speed which slower than stall speed or a speed faster than maximum speed a/t will maintain a speed closest to target speed that within range of safe speeds in thrust mode engine maintained at a fixed power setting (n1) according to different flight phases for example during takeoff a/t maintains a constant takeoff power until takeoff mode finished during climb a/t maintains a constant climb power in descent a/t retards throttle to idle position so on when a/t working in thrust mode speed controlled pitch (or control column) not protected a/t. Question 54-21
During a manual ils final approach auto throttle Can be operated in speed mode (holding of ias). there are two parameters that an a/t (autothrottle) can maintain or try to attain speed thrust in speed mode throttle positioned to attain a set target speed (tas or mach) this mode controls aircraft speed within safe operating margins for example if pilot selects a target speed which slower than stall speed or a speed faster than maximum speed a/t will maintain a speed closest to target speed that within range of safe speeds in thrust mode engine maintained at a fixed power setting (n1) according to different flight phases for example during takeoff a/t maintains a constant takeoff power until takeoff mode finished during climb a/t maintains a constant climb power in descent a/t retards throttle to idle position so on when a/t working in thrust mode speed controlled pitch (or control column) not protected a/t. Question 54-22
During an automatic ils final approach auto throttle Can be operated in speed mode (holding of ias). your approach speed must be stabilized during an automatic ils final approach speed maintained the speed mode (you select a speed on mcp mode control panel you push spd button) you are not looking a specific thrust during approach. Question 54-23
During a climb with autopilot engaged in v/s mode holding of vertical speed auto throttle Can be operated in speed mode (holding of ias). the v/s mode commands pitch to hold selected vertical speed engages a/t in speed mode to hold selected airspeed on boeing 737 'speed mode' engages automatically when v/s engages. Question 54-24
Considering a modern thrust computer during a steady climb N automatically adjusted as aircraft climbs. the v/s mode commands pitch to hold selected vertical speed engages a/t in speed mode to hold selected airspeed on boeing 737 'speed mode' engages automatically when v/s engages. Question 54-25
When an auto throttle system a/thr engaged in speed mode a/thr N automatically adjusted as aircraft climbs. speed mode autothrottle holds speed in ias/mach display or a performance or limit speed. Question 54-26
When an automatic thrust control system in thrust mode Thrust set to a computed thrust according to a performance database. there are two parameters that an a/t (autothrottle) can maintain or try to attain speed thrust in speed mode throttle positioned to attain a set target speed (tas or mach) this mode controls aircraft speed within safe operating margins for example if pilot selects a target speed which slower than stall speed or a speed faster than maximum speed a/t will maintain a speed closest to target speed that within range of safe speeds in thrust mode engine maintained at a fixed power setting (n1) according to different flight phases for example during takeoff a/t maintains a constant takeoff power until takeoff mode finished during climb a/t maintains a constant climb power in descent a/t retards throttle to idle position so on when a/t working in thrust mode speed controlled pitch (or control column) not protected a/t. Question 54-27
An automatic thrust control system can be 1 armed2 active3 disconnectedthe combination regrouping all correct statements Thrust set to a computed thrust according to a performance database. Revised ecqb03 july 2016. Question 54-28
When an automatic thrust control system in speed mode It maintains 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 thrust in speed mode throttle positioned to attain a set target speed (tas or mach) this mode controls aircraft speed within safe operating margins for example if pilot selects a target speed which slower than stall speed or a speed faster than maximum speed a/t will maintain a speed closest to target speed that within range of safe speeds in thrust mode engine maintained at a fixed power setting (n1) according to different flight phases for example during takeoff a/t maintains a constant takeoff power until takeoff mode finished during climb a/t maintains a constant climb power in descent a/t retards throttle to idle position so on when a/t working in thrust mode speed controlled pitch (or control column) not protected a/t. Question 54-29
Landing shall be considered as having been carried out automatically when autopilot and auto throttle of an aircraft are disengaged flight crew It maintains 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 thrust in speed mode throttle positioned to attain a set target speed (tas or mach) this mode controls aircraft speed within safe operating margins for example if pilot selects a target speed which slower than stall speed or a speed faster than maximum speed a/t will maintain a speed closest to target speed that within range of safe speeds in thrust mode engine maintained at a fixed power setting (n1) according to different flight phases for example during takeoff a/t maintains a constant takeoff power until takeoff mode finished during climb a/t maintains a constant climb power in descent a/t retards throttle to idle position so on when a/t working in thrust mode speed controlled pitch (or control column) not protected a/t. Question 54-30
A landing performed automatically when autopilot and auto throttle ensure good performance from final approach During landing roll sometimes until aircraft comes to a complete stop. 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 thrust in speed mode throttle positioned to attain a set target speed (tas or mach) this mode controls aircraft speed within safe operating margins for example if pilot selects a target speed which slower than stall speed or a speed faster than maximum speed a/t will maintain a speed closest to target speed that within range of safe speeds in thrust mode engine maintained at a fixed power setting (n1) according to different flight phases for example during takeoff a/t maintains a constant takeoff power until takeoff mode finished during climb a/t maintains a constant climb power in descent a/t retards throttle to idle position so on when a/t working in thrust mode speed controlled pitch (or control column) not protected a/t. Question 54-31
The cpdlc messages may concerne 1 route modifications2 speed changes3 voice contact request 4 emergency messagesthe combination regrouping all correct statements During landing roll sometimes until aircraft comes to a complete stop. cpdlc controller pilot data link communications. Question 54-32
The cpdlc function consists in exchanging messages relative to 1 route modifications2 crossing constraints3 transfer of atc center4 speed changesthe combination which regroups all of correct statements During landing roll sometimes until aircraft comes to a complete stop. cpdlc controller pilot data link communications. Question 54-33
The systems that can be connected to communication management unit cmu are 1 egpws 2 hf communication unit3 multipurpose control and display unit mcdu 4 vhf communication unit5 satcomthe combination regrouping all correct statements During landing roll sometimes until aircraft comes to a complete stop. cpdlc controller pilot data link communications. Question 54-34
The systems that can be connected to communication management unit cmu are 1 flight director 2 fms 3 multipurpose control and display unit mcdu 4 communication unit vhf hf satcom the combination which regroups all of correct statements During landing roll sometimes until aircraft comes to a complete stop. cpdlc controller pilot data link communications. Question 54-35
The basic on board datalink communication system typically composed the following sub systems 1 communication management unit cmu 2 multi purpose control and display unit mcdu 3 communication unit vhf hf satcom the combination which regroups all of correct statements During landing roll sometimes until aircraft comes to a complete stop. cpdlc controller pilot data link communications. Question 54-36
The different types of ads contracts can be 1 periodic at periodic time intervals2 on demand when asked by atc3 on event whenever a specified event occursthe combination which regroups all of correct statements During landing roll sometimes until aircraft comes to a complete stop. Ads (automatic dependant surveillance) what we call a fans (future air navigation systems) it refers to icao cns/atm concept (communication navigation surveillance/ air traffic management) ads afn (ats facility notification) cpdlc (controller pilot data link communications) are parts of fans a applications the different types of ads contracts are periodic on demand on event emergency mode the controller can modify 'periodic' 'on deman 'on event' contracts or parameters of these contracts (optional data groups) that these modifications do not require crew notification the ads contracts the basic concept of ads application that ground system will set up a contract with aircraft such that aircraft will automatically provide information obtained from its own on board sensors pass this information to ground system under specific circumstances dictated the ground system (except in emergencies) contracts are initiated by the ground can not be modified the pilot note that contract a 'dynamic agreement' between ground system the aircraft it not (as one could think) a piece of paper that has some legal value . Question 54-37
The on board communication devices to transmit and receive datalink communication can be 1 vhf com2 hf com3 satcomthe combination which regroups all of correct statements During landing roll sometimes until aircraft comes to a complete stop. this question also exists at exam under following form the acars digital datalink communications system can use following means the data transmission sat com hf vhf'. Question 54-38
The datalink communications between aircraft and ground can be performed the following system During landing roll sometimes until aircraft comes to a complete stop. the acars system used to transmit non vocal messages between an aircraft the ground vhf or satellite communication it can be used in particular operators to transmit information in real time (meteorological data flight progress information etc) there are three major categories of that can be transmitted non vocal (atc) communication messages with an air traffic control centre (cpdlc in particular) operational communication messages (aoc) with operator's operations centre maintenance messages exclusively from aircraft to maintenance centre acars messages are transmitted as a priority vhf or satellite if vhf unavailable they pass through an acars service provider's server (arinc or sita) before arriving at operator's centre. Question 54-39
A mayday datalink can be sent to atc via During landing roll sometimes until aircraft comes to a complete stop. data links are used year tower en route applications based on dating acars protocols the european union has mandated use of cpdlc in its upper airspace 2013 cpdlc stands controller pilot data link communication cpdlc application consists the controller the pilot exchange atc requests instructions over datalink rather than vhf or hf radio therefore a mayday datalink can be sent to atc via cpdlc application. Question 54-40
The acars allows air/ground datalink communications Airline operational air traffic communications (aoc atc). the acars system used to transmit non vocal messages between an aircraft the ground vhf or satellite communication it can be used in particular operators to transmit information in real time (meteorological data flight progress information etc) there are three major categories of that can be transmitted non vocal (atc) communication messages with an air traffic control centre (cpdlc in particular) operational communication messages (aoc) with operator's operations centre maintenance messages exclusively from aircraft to maintenance centre acars messages are transmitted as a priority vhf or satellite if vhf unavailable they pass through an acars service provider's server (arinc or sita) before arriving at operator's centre.
Exclusive rights reserved. Reproduction prohibited under penalty of prosecution.
2119 Free Training Exam