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Question 69-1 : The systems that can be connected to the communication management unit cmu are .1 egpws .2 hf communication unit.3 multipurpose control and display unit mcdu .4 vhf communication unit.5 satcom.the combination regrouping all the correct statements is ? [ Concept Manual ]

2 3 4 5

exemple 169 2, 3, 4, 5.

Question 69-2 : The systems that can be connected to the 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 the correct statements is ?

2 3 4

exemple 173 2, 3, 4.

Question 69-3 : The basic on board datalink communication system is typically composed by 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 the correct statements is ?

1 2 3

exemple 177 1, 2, 3.

Question 69-4 : The different types of ads contracts can be .1 periodic at periodic time intervals.2 on demand when asked for by the atc.3 on event whenever a specified event occurs.the combination which regroups all of the correct statements is ?

1 2 3

Ads automatic dependant surveillance is what we call a fans future air navigation systems it refers to the icao cns/atm concept communication navigation surveillance/ air traffic management .ads afn ats facility notification and cpdlc controller pilot data link communications are parts of the fans a applications .the different types of ads contracts are . periodic. on demand. on event. emergency mode.the controller can modify the 'periodic' 'on demand' and 'on event' contracts or the parameters of these contracts optional data groups and that these modifications do not require crew notification .the ads contracts the basic concept of the ads application is that the ground system will set up a contract with the aircraft such that the aircraft will automatically provide information obtained from its own on board sensors and pass this information to the ground system under specific circumstances dictated by the ground system except in emergencies .contracts are initiated by the ground and can not be modified by the pilot .note that the contract is a 'dynamic agreement' between the ground system and the aircraft it is not as one could think a piece of paper that has some legal value . 1010.

Question 69-5 : The on board communication devices to transmit and receive datalink communication can be .1 vhf com.2 hf com.3 satcom.the combination which regroups all of the correct statements is ?

1 2 3

Admin .this question also exists at the exam under the following form .the acars digital datalink communications system can use the following means for the data transmission .sat com hf vhf' exemple 185 1, 2, 3.

Question 69-6 : The datalink communications between the aircraft and the ground can be performed by the following system ?

Acars

Admin .the acars system is used to transmit non vocal messages between an aircraft and the ground by vhf or satellite communication it can be used in particular by operators to transmit information in real time meteorological data flight progress information etc .there are three major categories of message that can be transmitted . non vocal atc communication messages with an air traffic control centre cpdlc in particular . operational communication messages aoc with the operator's operations centre. maintenance messages exclusively from the aircraft to the maintenance centre .acars messages are transmitted as a priority by vhf or by satellite if vhf is unavailable they pass through an acars service provider's server arinc or sita before arriving at the operator's centre

Question 69-7 : A mayday datalink message can be sent to the atc via the ?

Cpdlc application

Admin .data links are used for year for tower and en route applications based on the dating acars protocols the european union has mandated the use of cpdlc in its upper airspace by 2013 .cpdlc stands for controller pilot data link communication .cpdlc application consists for the controller and the pilot the exchange atc requests and instructions over datalink rather than the vhf or hf radio .therefore a mayday datalink message can be sent to the atc via the cpdlc application exemple 193 Cpdlc application.

Question 69-8 : The acars allows air/ground datalink communications for ?

Airline operational and air traffic communications aoc and atc

Admin .the acars system is used to transmit non vocal messages between an aircraft and the ground by vhf or satellite communication it can be used in particular by operators to transmit information in real time meteorological data flight progress information etc .there are three major categories of message that can be transmitted . non vocal atc communication messages with an air traffic control centre cpdlc in particular . operational communication messages aoc with the operator's operations centre. maintenance messages exclusively from the aircraft to the maintenance centre .acars messages are transmitted as a priority by vhf or by satellite if vhf is unavailable they pass through an acars service provider's server arinc or sita before arriving at the operator's centre exemple 197 Airline operational and air traffic communications (aoc and atc).

Question 69-9 : A d atis is ?

An atis message received by datalink

exemple 201 An atis message received by datalink.

Question 69-10 : The fans concept includes ?

A datalink communication between the aircraft and the atc centers to replace the voice communication

exemple 205 A datalink communication between the aircraft and the atc centers to replace the voice communication.

Question 69-11 : The ground routing of the atc datalink communications is performed ?

By service providers sita arinc that can be interconnected to provide continuity of the transmissions

exemple 209 By service providers (sita, arinc) that can be interconnected to provide continuity of the transmissions.

Question 69-12 : The following atc clearances can be received via the datalink application ?

Departure oceanic

exemple 213 Departure, oceanic.

Question 69-13 : The cpdlc is a fans application which consists in ?

Transmitting datalink formatted messages between the pilot and atc controller

Admin .the aim of fans is to provide an integrated air traffic control system in areas where radar is not available by using gnss to define aircraft position with datalink and voice communications through geostationary and lower orbit satellites providing global coverage to atc centres this will provide atc with continuous information on the aircraft positions and direct pilot to controller communications when in operation this will allow separation distances to be significantly reduced and if position accuracy is degraded for any reason the aircraft still have tcas to warn of any potential conflict .cpdlc permits datalink messages to be generated for all stages of flight the messages have a fixed format defined within the fms and atsu computers and are activated by the atc controller or pilot either as an instruction or response to a request the messages are annotated according to whether a response is required or not for example if the pilot is instructed to report levelling at fl310 then the message will remain open until the aircraft reaches fl310 when the fms will send the response the confirmation that the aircraft is at fl310 does not require a response from the controller so the message will automatically close one received at the ground station .example . 1019.new york oceanic control kzwy ctl asks via the cpdlc interface to climb and maintain fl400 and to report when levelled at fl400 .the pilots have already answered wilco we will comply exemple 217 Transmitting datalink formatted messages between the pilot and atc controller.

Question 69-14 : The ads is a fans application which consists in ?

Sending automatically aircraft surveillance data to the air traffic controller

Admin .the future air navigation system fans is an avionics system which provides direct data link communication between the pilot and the air traffic controller with the ads automatic dependent surveillance application an air traffic controller can set up a contract with the airplane navigational system to automatically send a position report on a specified periodic basis such as every 5 minutes the controller can also set up deviation contracts which would automatically send a position report if a certain lateral deviation was exceeded this contracts are set up between atc and the aircraft systems the flight crew has no workload associated with this set up exemple 221 Sending automatically aircraft surveillance data to the air traffic controller.

Question 69-15 : In a datalink system the uplink communications consist in transmitting data ?

From the the ground to the aircraft

Uplink = from the the ground to the aircraft .downlink = from the aircraft to the ground exemple 225 From the the ground to the aircraft.

Question 69-16 : In a datalink system the downlink communications consist in transmitting data ?

From the aircraft to the ground

Uplink = from the the ground to the aircraft .downlink = from the aircraft to the ground exemple 229 From the aircraft to the ground.

Question 69-17 : The ads is a fans application performed ?

Automatically without any crew action to define the set of data to downlink or the type of report contract

exemple 233 Automatically, without any crew action to define the set of data to downlink or the type of report contract.

Question 69-18 : When sent a mayday datalink message to the atc has the following effect on ads ?

The ads contract is switched to high periodic reporting rate

exemple 237 The ads contract is switched to high periodic reporting rate.

Question 69-19 : The characteristics of the satcom transmissions used for datalink communications are ?

No line of sight limitation no variable quality of signals disturbed by ionospheric conditions


Question 69-20 : The notification phase log on is a fans application which consists in transmitting aircraft information and ?

Associated datalink capability prior to operating any datalink communications with atc

exemple 245 Associated datalink capability, prior to operating any datalink communications with atc.

Question 69-21 : Comparing the media used to transmit datalink communications the appropriate classification from the slowest to the fastest data transmission rate is ?

Hf datalink vhf datalink satcom


Question 69-22 : The notification phase log on is a fans application which consists in ?

Establishing air/ground connection to verify if the datalink communication can be performed

exemple 253 Establishing air/ground connection to verify if the datalink communication can be performed.

Question 69-23 : The uplink datalink message 'at position climb to altitude and maintain' is part of the ?

Cpdlc application

Admin .the cpdlc is a fans future air navigation system application which consists in transmitting datalink formatted messages between the pilot and atc controller .the aim of fans is to provide an integrated air traffic control system in areas where radar is not available by using gnss to define aircraft position with datalink and voice communications through geostationary and lower orbit satellites providing global coverage to atc centres this will provide atc with continuous information on the aircraft positions and direct pilot to controller communications when in operation this will allow separation distances to be significantly reduced and if position accuracy is degraded for any reason the aircraft still have tcas to warn of any potential conflict .cpdlc permits datalink messages to be generated for all stages of flight the messages have a fixed format defined within the fms and atsu computers and are activated by the atc controller or pilot either as an instruction or response to a request the messages are annotated according to whether a response is required or not for example if the pilot is instructed to report levelling at fl310 then the message will remain open until the aircraft reaches fl310 when the fms will send the response the confirmation that the aircraft is at fl310 does not require a response from the controller so the message will automatically close one received at the ground station .example . 1019.new york oceanic control kzwy ctl asks via the cpdlc interface to climb and maintain fl400 and to report when levelled at fl400 .the pilots have already answered wilco we will comply exemple 257 Cpdlc application.

Question 69-24 : The uplink datalink messages 'climb to reach altitude by time' means ?

A climb is to commence at a rate such that the specified level is reached at or before the specified time

exemple 261 A climb is to commence at a rate such that the specified level is reached at or before the specified time.

Question 69-25 : The uplink datalink message 'at time climb to and maintain altitude means ?

At the specified time a climb to the specified altitude is to be started and the specified altitude is to be maintained

Admin .the aim of fans future air navigation system is to provide an integrated air traffic control system in areas where radar is not available by using gnss to define aircraft position with datalink and voice communications through geostationary and lower orbit satellites providing global coverage to atc centres this will provide atc with continuous information on the aircraft positions and direct pilot to controller communications when in operation this will allow separation distances to be significantly reduced and if position accuracy is degraded for any reason the aircraft still have tcas to warn of any potential conflict .cpdlc permits datalink messages to be generated for all stages of flight the messages have a fixed format defined within the fms and atsu computers and are activated by the atc controller or pilot either as an instruction or response to a request the messages are annotated according to whether a response is required or not for example if the pilot is instructed to report levelling at fl310 then the message will remain open until the aircraft reaches fl310 when the fms will send the response the confirmation that the aircraft is at fl310 does not require a response from the controller so the message will automatically close one received at the ground station .example . 1019.new york oceanic control kzwy ctl asks via the cpdlc interface to climb and maintain fl400 and to report when levelled at fl400 .the pilots have already answered wilco we will comply exemple 265 At the specified time a climb to the specified altitude is to be started and the specified altitude is to be maintained.

Question 69-26 : The fans concept involves implementation of datalink systems for use in .1 aircraft communications.2 aircraft navigation.3 aircraft surveillance ?

1 2 3

Admin .the fans concept involves improvements to communication navigation and surveillance. communication improvements .this involved a transition from voice communications to digital communications specifically acars was used as the communication medium this allowed other application improvements .an application was hosted on the airplane known as controller pilot data link communications cpdlc this allows the flight crew to select from a menu of standard atc communications send the message and receive a response a peer application exists on the ground for the air traffic controller they can select from a set of messages and send communications to the airplane the flight crew will respond with a wilco standby or reject the current standard for message delivery is under 60 seconds one way . navigation improvements .this involves a transition from inertial navigation to satellite navigation using the gps satellites this also introduced the concept of actual navigation performance anp previously flight crews would be notified of the system being used to calculate the position radios or inertial systems alone because of the deterministic nature of the gps satellites constellation geometry the navigation systems can calculate the worst case error based on the number of satellites tuned and the geometry of those satellites note it can also characterize the potential errors in other navigation modes as well so the improvement not only provides the airplane with a much more accurate position it also provides an alert to the flight crew should the actual navigation performance exceed the required navigation performance rnp . surveillance improvements .this involves the transition from voice reports based on inertial position to automatic digital reports the application is known as ads c automatic dependent surveillance contract in this system an air traffic controller can set up a contract with the airplane navigational system to automatically send a position report on a specified periodic basis such as every 5 minutes .the controller can also set up deviation contracts which would automatically send a position report if a certain lateral deviation was exceeded this contracts are set up between atc and the aircraft systems the flight crew has no workload associated with this set up exemple 269 1, 2, 3.

Question 69-27 : Acars systems consist of ?

On board units and ground units

Admin .the acars system is used to transmit non vocal messages between an aircraft and the ground by vhf or satellite communication it can be used in particular by operators to transmit information in real time meteorological data flight progress information etc .there are three major categories of message that can be transmitted . non vocal atc communication messages with an air traffic control centre cpdlc in particular . operational communication messages aoc with the operator's operations centre. maintenance messages exclusively from the aircraft to the maintenance centre .acars messages are transmitted as a priority by vhf or by satellite if vhf is unavailable they pass through an acars service provider's server arinc or sita before arriving at the operator's centre exemple 273 On-board units and ground units.

Question 69-28 : The uplink datalink message 'expect cruise climb at time means ?

A climb instruction should be received to initiate the cruise climb at the specified time

Revised ecqb04 october 2017 . mathildedb .as an atc 'expect' means to me 'instruction should be received' and is not at all an instruction to climb although we do not use it very often because of the high risk of misunderstanding .according to the datalink clearance monitoring certificate .'expect cruise climb at time .is followed by 'all are clearance expectations although these messages are included in the fans message set air traffic controllers are discouraged from using them since they may cause confusion and might induce crews to follow the 'expect' message' exemple 277 A climb instruction should be received to initiate the cruise climb at the specified time.

Question 69-29 : The datalink communication message check stuck microphone frequency refers to a request from ?

The atc to the pilot to check microphone buttons due to a continuous transmission detected on the frequency

Admin .a 'check stuck microphone' instruction may be sent by atc in circumstances where an.aircraft is inadvertently blocking a voice communication frequency for fans aircraft a roger.response is expected to this instruction .if the 'check stuck microphone' instruction relates to the r/t frequency being used then the aircrew shall check that their radio equipment is not causing the blockage if the 'check stuck microphone' instruction does not relate to the r/t frequency being used then no further aircrew action is required exemple 281 The atc to the pilot to check microphone buttons due to a continuous transmission detected on the frequency.

Question 69-30 : The fms provides the following functions .1 fuel management.2 lateral flight plan management.3 de icing management.4 aircraft position computation.the combination which regroups all of the correct statements is ?

1 2 4

exemple 285 1, 2, 4.

Question 69-31 : The fms provides the following functions .1 aircraft position computation .2 traffic alerts .3 lateral flight plan management .4 fuel management .the combination which regroups all of the correct statements is ?

1 3 4

exemple 289 1, 3, 4.

Question 69-32 : The fms overfly function consists in ?

Manually selecting a flight plan waypoint to fly over when sequencing it instead of flying by at the transition

With most fms you do not actually overfly the waypoints you start the turn just before reaching the way point so you in effect turn early before you reach the waypoint and cut the corner the 'overfly' function ensures that the aircraft doesn't cut the corner but does go overhead the specified waypoint before turning on to the next track exemple 293 Manually selecting a flight plan waypoint to fly over when sequencing it instead of flying by at the transition.

Question 69-33 : The 'fms' navigation database processing should include the following check s ?

At each phase of the process from the reception of each supplier's data to the distribution and loading of the formatted database

Each navigation database is valid for a 28 day period and that from the moment you receive it until it is finally installed in an aicraft someone needs to check the period of validity at every stage of the process and the correct loading into the system exemple 297 At each phase of the process, from the reception of each supplier's data to the distribution and loading of the formatted database.

Question 69-34 : The most common sensors interfacing a fms to compute the aircraft position along the flight plan are .1 mls.2 gps.3 vor.4 irs.the combination which regroups all of the correct statements is ?

2 3 4

The most common sensors interfacing a fms to compute the aircraft position along the flight plan are . irs. dme. gps. vor.mls ils ndb can be used as inputs to the fmc position but not along the flight plan only on departure or on arrival exemple 301 2, 3, 4.

Question 69-35 : The most common sensors interfacing a fms to compute the aircraft position along the flight plan are .1 irs.2 dme.3 ndb.4 gps.the combination which regroups all of the correct statements is ?

1 2 4

The most common sensors interfacing a fms to compute the aircraft position along the flight plan are . irs. dme. gps. vor.mls ils ndb can be used as inputs to the fmc position but not along the flight plan only on departure or on arrival exemple 305 1, 2, 4.

Question 69-36 : The most common sensors interfacing a fms to compute the aircraft position along the flight plan are .1 gps.2 ndb.3 dme.4 localizer.the combination which regroups all of the correct statements is ?

1 3

.the most common sensors interfacing a fms to compute the aircraft position along the flight plan are . irs. dme. gps. vor.mls ils ndb localizer can be used as inputs to the fmc position but not along the flight plan only on departure or on arrival exemple 309 1, 3.

Question 69-37 : The most common sensors interfacing a fms to compute the aircraft position along the flight plan are .1 dme.2 gps.3 localizer.4 ndb.the combination which regroups all of the correct statements is ?

1 2

.the most common sensors interfacing a fms to compute the aircraft position along the flight plan are . irs. dme. gps. vor.mls ils ndb localizer can be used as inputs to the fmc position but not along the flight plan only on departure or on arrival exemple 313 1, 2.

Question 69-38 : The fms provides the following functions .1 radio tuning.2 fuel management.3 lateral flight plan management.4 traffic alerts.the combination which regroups all of the correct statements is ?

1 2 3

.traffic alerts are given by the tcas exemple 317 1, 2, 3.

Question 69-39 : Concerning the fms flight management system the cost index is determined by dividing ?

Aircraft operating cost by fuel cost

Admin .cost index = time related cost of an airplane operation /cost of fuel exemple 321 Aircraft operating cost by fuel cost.

Question 69-40 : Concerning the fms flight management system entering a high cost index results in ?

High airspeed and high fuel trip

Cost index is the ratio of time related costs crew salaries maintenance etc to fuel cost as one of the independent variables in the speed schedule computation . cost index ci = flight time related cost/fuel cost .the cost index allows airlines to weight time and fuel costs based on their daily operations .a higher 'cost index' will result in a higher cruising speed .cost index is about fuel cost not quantity .cost index is a made up figure which when input into the fmc is used to calculate econ speed the higher the cost index number the faster the aircraft flies basically the company decides on the cost of keeping the aircraft in the air and includes all sorts of costs such as crew aircraft operating costs fuel etc they then decide whether they want the aircraft to fly faster or slower and adjust the cost index as needed exemple 325 High airspeed and high fuel trip.


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