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An aircraft in climb or descent is considered to have crossed a level when the SSR mode C derived level information indicates that it has passed this ?

Question > security

exemple reponse 111
Icao doc4444 pans atm 'procedures air navigation services air traffic management' 8 5 5 2 determination of level occupancy 8 5 5 2 1 the criterion which shall be used to determine that a specific level occupied an aircraft shall be +/ 60 m (+/ 200 ft) in rvsm airspace in other airspace it shall be +/ 90 m (+/ 300 ft) except that appropriate ats authority may specify a smaller criterion but not less than +/ 60 m (+/ 200 ft) if this found to be more practical 8 5 5 2 2 aircraft maintaining a level an aircraft considered to be maintaining its assigned level as long as pressure altitude derived level information indicates that it within appropriate tolerances of assigned level asspecified in 8 5 5 2 1 8 5 5 2 3 aircraft vacating a level an aircraft cleared to leave a level considered to have commenced its manoeuvre vacated previously occupied level when pressure altitude derived level information indicates achange of more than 90 m (300 ft) in anticipated direction from its previously assigned level 8 5 5 2 4 aircraft passing a level in climb or descent an aircraft in climb or descent considered to have crossed a level when pressure altitude derived level information indicates that it has passed this level in required directionby more than 90 m (300 ft) 8 5 5 2 5 aircraft reaching a level an aircraft considered to have reached level to which it has been cleared when elapsed time of three display updates three sensor updates or 15 seconds whichever the greater has passed since pressure altitude derived level information has indicated that it within appropriate tolerances of assigned level as specified in 8 5 5 2 1 8 5 5 2 6 intervention a controller shall only be required if differences in level information between that displayed to controller that used control purposes are in excess of values stated above.

Other study patent: Telepilote theorique examen 8

An aircraft intercepted by another aircraft shall immediately attempt to establish radio communication with the intercepting aircraft on the following frequencies ?

exemple reponse 112
An aircraft intercepted another aircraft shall immediately attempt to establish radio communication with intercepting aircraft on following frequencies Icao annex 2 rules of air appendix 2 interception of civil aircraft (note see chapter 3 3 8 of annex) 2 action intercepted aircraft 2 1 an aircraft which intercepted another aircraft shall immediately a) follow instructions given the intercepting aircraft interpreting responding to visual signals in accordance with specifications in appendix 1 b) notify if possible appropriate air traffic services unit c) attempt to establish radiocommunication with intercepting aircraft or with appropriate intercept control unit making a general call on emergency frequency 121 5 mhz giving identity of intercepted aircraft the nature of flight if no contact has been established if practicable repeating this call on emergency frequency 243 mhz d) if equipped with ssr transponder select mode a code 7700 unless otherwise instructed the appropriate air traffic services unit e) if equipped with ads b or ads c select appropriate emergency functionality if available unless otherwise instructed the appropriate air traffic services unit.

Outside RVSM airspace an aircraft is considered to be maintaining its assigned level as long as the SSR mode C derived level information indicated that it is within ?

exemple reponse 113
Outside rvsm airspace an aircraft considered to be maintaining its assigned level as long as ssr mode c derived level information indicated that it within +/ 3 ft of assigned level. Icao doc 4444 8 5 5 2.

  • exemple reponse 114
    An aircraft considered to overtake another if it approaches other aircraft from rear on a line forming an angle of less than 7 degrees with plane of symmetry of latter. Annex 2 rules of air 3 2 2 right of way 3 2 2 4 overtaking an overtaking aircraft an aircraft that approaches another from rear on a line forming an angle of less than 70 degrees with plane of symmetry of latter i e in such a position with reference to other aircraft that at night it should be unable to see either of aircraft's left (port) or right (starboard) navigation lights an aircraft that being overtaken has right of way the overtaking aircraft whether climbing descending or in horizontal flight shall keep out of way of other aircraft altering its heading to right no subsequent change in relative positions of two aircraft shall absolve overtaking aircraft from this obligation until it entirely past clear.

  • exemple reponse 115
    An aircraft maintaining fl 150 within airspace class c another aircraft below at fl 140 receiving a clearance to descend to fl 70 it severe turbulence in area when the earliest that a clearance to descend to fl 140 or below can be expected When other aircraft has reported that it has descended through fl 3. Doc4444 procedures air navigation services air traffic management (pans atm) 5 3 4 vertical separation during climb or descent 5 3 4 1 an aircraft may be cleared to a level previously occupied another aircraft after latter has reported vacating it except when a) severe turbulence known to exist b) higher aircraft effecting a cruise climb or c) difference in aircraft performance such that less than applicable separation minimum may result in which case such clearance shall be withheld until aircraft vacating level has reported at or passing another level separated the required minimum.

  • exemple reponse 116
    An aircraft making a radar approach should be advised to consider executing a missed approach if position or identification of aircraft in doubt during any portion of final approach or if aircraft not visible on radar display significant interval during last When other aircraft has reported that it has descended through fl 3. Icao doc 4444 pans atm 8 9 6 radar approaches 8 9 6 1 8 an aircraft making a radar approach should a) be directed to execute a missed approach in following circumstances i) when aircraft appears to be dangerously positioned on final approach or ii) reasons involving traffic conflictions or iii) if no clearance to land has been received from procedural controller the time aircraft reaches a distance of 4 km (2 nm) from touchdown or such other distance as has been agreed with aerodrome control tower or iv) on instructions the aerodrome controller or b) be advised to consider executing a missed approach in following circumstances i) when aircraft reaches a position from which it appears that a successful approach cannot be completed or ii) if aircraft not visible on situation display any significant interval during last 4 km (2 nm) of approach or iii) if position or identification of aircraft in doubt during any portion of final approach in all such cases reason the instruction or advice should be given to pilot.

  • exemple reponse 118
    An aircraft making a radar approach should be directed to consider executing a missed approach if aircraft not visible on radar display any significant interval during Last 2 nm of approach. Icao doc 4444 pans atm 8 9 6 radar approaches 8 9 6 1 8 an aircraft making a radar approach should a) be directed to execute a missed approach in following circumstances i) when aircraft appears to be dangerously positioned on final approach or ii) reasons involving traffic conflictions or iii) if no clearance to land has been received from procedural controller the time aircraft reaches a distance of 4 km (2 nm) from touchdown or such other distance as has been agreed with aerodrome control tower or iv) on instructions the aerodrome controller or b) be advised to consider executing a missed approach in following circumstances i) when aircraft reaches a position from which it appears that a successful approach cannot be completed or ii) if aircraft not visible on situation display any significant interval during last 4 km (2 nm) of approach or iii) if position or identification of aircraft in doubt during any portion of final approach in all such cases reason the instruction or advice should be given to pilot.

  • Question 8-8

    An aircraft making a radar approach should be directed to execute a missed approach if no clearance to land has been received from non radar controller the time aircraft reaches a distance of Last 2 nm of approach. Icao doc 4444 pans atm 8 9 6 radar approaches 8 9 6 1 8 an aircraft making a radar approach should a) be directed to execute a missed approach in following circumstances i) when aircraft appears to be dangerously positioned on final approach or ii) reasons involving traffic conflictions or iii) if no clearance to land has been received from procedural controller the time aircraft reaches a distance of 4 km (2 nm) from touchdown or such other distance as has been agreed with aerodrome control tower or iv) on instructions the aerodrome controller or b) be advised to consider executing a missed approach in following circumstances i) when aircraft reaches a position from which it appears that a successful approach cannot be completed or ii) if aircraft not visible on situation display any significant interval during last 4 km (2 nm) of approach or iii) if position or identification of aircraft in doubt during any portion of final approach in all such cases reason the instruction or advice should be given to pilot.

  • Question 8-9

    The information communicated in an atis broadcast shall be updated Immediately a significant change occurs. Annex 11 4 3 6 automatic terminal information service b) the information communicated shall be updated immediately a significant change occurs.

  • Question 8-10

    An ats airspace where ifr and vfr are permitted and receive flight information service if requested classified as Immediately a significant change occurs. Annex 11 air traffic services (official table) .

  • Question 8-11

    An ats airspace where ifr and vfr are permitted ifr flights are subject to air traffic control service and are separated from other ifr flights all flights receive traffic information as far as practical classified as Immediately a significant change occurs. Annex 11 air traffic services (official table) .

  • Question 8-12

    An ats airspace where ifr and vfr flights are permitted all flights are subject to air traffic control service and are separated from each other classified as Immediately a significant change occurs. Annex 11 air traffic services (official table) .

  • Question 8-13

    An ats airspace where ifr and vfr flights are permitted all flights are subject to air traffic control service and ifr flights are separated from other ifr flights and from vfr flights vfr flights are separated from ifr flights and receive traffic information about other vfr flight Immediately a significant change occurs. Annex 11 air traffic services (official table) .

  • Question 8-14

    An ats airspace where ifr and vfr flights are permitted all participating ifr flights receive an air traffic advisory service and all flights receive flight information service if requested classified Immediately a significant change occurs. Annex 11 air traffic services (official table) .

  • Question 8-15

    An ats airspace where ifr and vfr fligts are permitted and all flights are subject to air traffic control service ifr flights are separated from other ifr flights and receive traffic information in respect of vfr flights vfr flights receive traffic information in respect of all other flights classified as Immediately a significant change occurs. Annex 11 air traffic services (official table) .

  • Question 8-16

    Approach control service an expected approach time eat will be transmitted the most expeditious means to aircraft when it expected that it has to hold For 3 minutes or more. Doc 4444 pans atm chapter 6 separation in vicinity of aerodromes 6 5 7 expected approach time 6 5 7 2 an expected approach time shall be transmitted to aircraft the most expeditious means whenever it anticipated that aircraft will be required to hold 30 minutes or more.

  • Question 8-17

    Area control centres issue clearances the purpose of Achieving separation between controlled flights. Doc 4444 pans atm chapter 6 separation in vicinity of aerodromes 6 5 7 expected approach time 6 5 7 2 an expected approach time shall be transmitted to aircraft the most expeditious means whenever it anticipated that aircraft will be required to hold 30 minutes or more.

  • Question 8-18

    At commencement of final approach if controller possesses wind information in form of components significant changes in mean surface wind direction and speed shall be transmitted to aircraft the mean cross wind component significant change Achieving separation between controlled flights. Pans atm doc4444 6 6 4 at commencement of final approach following information shall be transmitted to aircraft a) significant changes in mean surface wind direction speed note significant changes are specified in annex 3 chapter 4 however if controller possesses wind information in form of components significant changes are mean headwind component 19 km/h (10 kt) mean tailwind component 4 km/h (2 kt) mean crosswind component 9 km/h (5 kt).

  • Question 8-19

    At commencement of final approach if controller possesses wind information in form of components significant changes in mean surface wind direction and speed shall be transmitted to aircraft the mean head wind component significant change Achieving separation between controlled flights. Pans atm doc4444 6 6 4 at commencement of final approach following information shall be transmitted to aircraft a) significant changes in mean surface wind direction speed note significant changes are specified in annex 3 chapter 4 however if controller possesses wind information in form of components significant changes are mean headwind component 19 km/h (10 kt) mean tailwind component 4 km/h (2 kt) mean crosswind component 9 km/h (5 kt).

  • Question 8-20

    At commencement of final approach if controller possesses wind information in form of components significant changes in mean surface wind direction and speed shall be transmitted to aircraft the mean tail wind component significant change Achieving separation between controlled flights. Pans atm doc4444 6 6 4 at commencement of final approach following information shall be transmitted to aircraft a) significant changes in mean surface wind direction speed note significant changes are specified in annex 3 chapter 4 however if controller possesses wind information in form of components significant changes are mean headwind component 19 km/h (10 kt) mean tailwind component 4 km/h (2 kt) mean crosswind component 9 km/h (5 kt).

  • Question 8-21

    Atis updating whenever atis provided broadcast information shall be updated Immediately a significant change occurs. Annex 11 4 3 6 automatic terminal information service (voice and/or data link) the information communicated shall be updated immediately a significant change occurs.

  • Question 8-22

    Atis broadcast Shall not be transmitted on voice channel of an ils. annex 11 air traffic services chapter 4 flight information service 4 3 4 2 a discrete vhf frequency shall whenever practicable be used voice atis broadcasts if a discrete frequency not available transmission may be made on voice channel(s) of most appropriate terminal navigation aid(s) preferably a vor provided range readability are adequate the identification of navigation aid sequenced with broadcast so that latter not obliterated 4 3 4 3 voice atis broadcasts shall not be transmitted on voice channel of an ils.

  • Question 8-23

    Atis broadcast messages containing departure and arrival information should include cloud cover when clouds are Below 5 m (5 ft) or below highest minimum sector altitude whichever the greater. Icao annex 11 (and doc4444) 4 3 7 atis arriving departing aircraft atis messages containing both arrival departure informationshall contain following elements of information in order listed a) name of aerodrome b) arrival and/or departure indicator c) contract type if communication via d atis d) designator e) time of observation if appropriate f) type of approach(es) to be expected g) runway(s) in use status of arresting system constituting a potential hazard if any h) significant runway surface conditions and if appropriate braking action i) holding delay if appropriate j) transition level if applicable k) other essential operational information l) surface wind direction speed including significant variations and if surface wind sensors related specifically to sections of runway(s) in use are available the information required operators indication of runway the section of runway to which information refers m) visibility and when applicable rvr n) present weather o) cloud below 1500 m (5000 ft) or below highest minimum sector altitude whichever greater cumulonimbus if sky obscured vertical visibility when available p) air temperature q) dew point temperature r) altimeter setting(s) s) any available information on significant meteorological phenomena in approach climb out areas including wind shear information on recent weather of operational significance t) trend forecast when available and u) specific atis instructions.

  • Question 8-24

    Change from ifr to vfr will always take place On initiative of aircraft commander. Icao annex 11 (and doc4444) 4 3 7 atis arriving departing aircraft atis messages containing both arrival departure informationshall contain following elements of information in order listed a) name of aerodrome b) arrival and/or departure indicator c) contract type if communication via d atis d) designator e) time of observation if appropriate f) type of approach(es) to be expected g) runway(s) in use status of arresting system constituting a potential hazard if any h) significant runway surface conditions and if appropriate braking action i) holding delay if appropriate j) transition level if applicable k) other essential operational information l) surface wind direction speed including significant variations and if surface wind sensors related specifically to sections of runway(s) in use are available the information required operators indication of runway the section of runway to which information refers m) visibility and when applicable rvr n) present weather o) cloud below 1500 m (5000 ft) or below highest minimum sector altitude whichever greater cumulonimbus if sky obscured vertical visibility when available p) air temperature q) dew point temperature r) altimeter setting(s) s) any available information on significant meteorological phenomena in approach climb out areas including wind shear information on recent weather of operational significance t) trend forecast when available and u) specific atis instructions.

  • Question 8-25

    Classification of airspace above 3050m 10000 ft amsl vmc minima vfr flights in all classes of airspace are Visibility 8 km distance from clouds 5 m horizontal ft vertical. Icao annex 11 (and doc4444) 4 3 7 atis arriving departing aircraft atis messages containing both arrival departure informationshall contain following elements of information in order listed a) name of aerodrome b) arrival and/or departure indicator c) contract type if communication via d atis d) designator e) time of observation if appropriate f) type of approach(es) to be expected g) runway(s) in use status of arresting system constituting a potential hazard if any h) significant runway surface conditions and if appropriate braking action i) holding delay if appropriate j) transition level if applicable k) other essential operational information l) surface wind direction speed including significant variations and if surface wind sensors related specifically to sections of runway(s) in use are available the information required operators indication of runway the section of runway to which information refers m) visibility and when applicable rvr n) present weather o) cloud below 1500 m (5000 ft) or below highest minimum sector altitude whichever greater cumulonimbus if sky obscured vertical visibility when available p) air temperature q) dew point temperature r) altimeter setting(s) s) any available information on significant meteorological phenomena in approach climb out areas including wind shear information on recent weather of operational significance t) trend forecast when available and u) specific atis instructions.

  • Question 8-26

    Clearance descent an aircraft flying under ifr maintaining fl 150 has requested clearance descent another aircraft flying below maintaining fl 140 receives clearance 'descend to fl 70 report passing fl100' the earliest moment pilot of aircraft at higher level can expect to receive a clearance to descend to fl 140 or below when pilot of aircaft at lower level has reported That he has left fl 4. Doc4444 procedures air navigation services air traffic management (pans atm) 5 3 4 vertical separation during climb or descent 5 3 4 1 an aircraft may be cleared to a level previously occupied another aircraft after latter has reported vacating it except when a) severe turbulence known to exist b) higher aircraft effecting a cruise climb or c) difference in aircraft performance such that less than applicable separation minimum may result in which case such clearance shall be withheld until aircraft vacating level has reported at or passing another levelseparated the required minimum.

  • Question 8-27

    Clearance on final approach a pilot may expect to receive clearance to land or any alternative clearance before aircraft reaches a distance of That he has left fl 4. Icao doc 4444 8 9 6 1 7 clearance to land or any alternative clearance received from aerodrome controller or when applicable procedural controller should normally be passed to aircraft before it reaches a distance of 4 km (2 nm) from touchdown.

  • Question 8-28

    Clearances will be issued an atc unit the purpose of Achieving separation between controlled flights. Icao doc 4444 8 9 6 1 7 clearance to land or any alternative clearance received from aerodrome controller or when applicable procedural controller should normally be passed to aircraft before it reaches a distance of 4 km (2 nm) from touchdown.

  • Question 8-29

    Concerning to rnp required navigation performance types indication rnp 4 represents a navigation accuracy of Plus or minus 4 nm on a 95 per cent containment basis. Pans atm doc4444 rnp type a containment value expressed as a distance in nautical miles from intended position within which flights would be at least 95 per cent of total flying time example rnp 4 represents a navigation accuracy of plus or minus 7 4 km (4 nm) on a 95 per cent containment basis .

  • Question 8-30

    A control area cta a controlled airspace extending upwards from A specified limit above earth. Pans atm doc4444 control zone (ctr) controlled airspace extending upwards from surface of earth to a specified upper limit controlled airspace an airspace of defined dimensions within which air traffic control service provided in accordance with airspace classification note controlled airspace a generic term which covers ats airspace classes a b c d e control area (cta) a controlled airspace extending upwards from a specified limit above earth advisory airspace an airspace of defined dimensions or designated route within which air traffic advisory service available.

  • Question 8-31

    Ctr minimum lateral limitshow many nm shall a control zone extend at least from a reference point of aerodrome or aerodromes into direction from which approaches may be made A specified limit above earth. A control zone a controlled airspace extending upwards from surface of earth to a specified upper limit annex 11 air traffic services 2 10 5 control zones 2 10 5 1 the lateral limits of control zones shall encompass at least those portions of airspace which are not within control areas containing paths of ifr flights arriving at departing from aerodromes to be used under instrument meteorological conditions 2 10 5 2 the lateral limits of a control zone shall extend to at least 9 3 km (5 nm) from centre of aerodrome or aerodromes concerned in directions from which approaches may be made.

  • Question 8-32

    During an arrival procedure under an ifr flight plan in vmc conditions traffic avoidance the responsibility of The pilot in command. In vmc (and imc in vmc conditions) crew are ultimately responsible avoiding collisions with other aircraft.

  • Question 8-33

    During an ifr flight in vmc in controlled airspace you experience a two way radio communication failure you will Land at nearest suitable aerodrome maintaining vmc inform atc. Doc 4444 chapter 15 procedures related to emergencies communication failure and contingencies 15 3 air ground communications failure 15 3 3 if aircraft fails to indicate that it able to receive acknowledge transmissions separation shall be maintained between aircraft having communication failure other aircraft based on assumption that aircraft will a) if in visual meteorological conditions 1) continue to fly in visual meteorological conditions 2) land at nearest suitable aerodrome and 3) report its arrival the most expeditious means to appropriate air traffic control unit.

  • Question 8-34

    Expected approach time / eat a pilot receive an eat as soon as practicable when an expected approach delay Land at nearest suitable aerodrome maintaining vmc inform atc. If approach time will be delayed 10 minutes or more pilot must be informed as soon as posible if he must hold at least a minimum of 30 minutes pilot must be informed as soon as posible in first case pilot can adjust his cruise speed in order not to hold on arrival example estimated time of arrival for ifr flights time at which it estimated that aircraft will arrive over that designated point defined reference to navigation aids from which it intended that an instrument approach procedure will be commenced or if no navigation aid associated with aerodrome time at which aircraft will arrive over aerodrome for vfr flights time at which it estimated that aircraft will arrive over aerodrome expected approach time the time at which atc expects that an arriving aircraft following a delay will leave holding fix to complete its approach a landing.

  • Question 8-35

    Except in some special cases establishment of change over points should be limited to route segments of Land at nearest suitable aerodrome maintaining vmc inform atc. Annex 11 air traffic services 2 13 establishment ofchange over points 2 13 1 (recommendation) change over points should be established on ats route segments defined reference to very high frequency omnidirectional radio ranges where this will assist accurate navigation along route segments the establishment of change over points should be limited to route segments of 110 km (60 nm) or more except where complexity of ats routes density of navigation aids or other technical operational reasons warrant establishment of change over points on shorter route segments.

  • Question 8-36

    Except otherwise established the appropriate ats authority a surveillance radar approach sra shall be terminated at a distance from touchdown of Land at nearest suitable aerodrome maintaining vmc inform atc. pans atm doc4444 8 9 7 1 surveillance radar approach 8 9 7 1 1 a final approach using solely surveillance radar should not be carried out if precision approach radar available unless meteorological conditions are such as to indicate with reasonable certainty that a surveillance radar approach can be completed successfully 8 9 7 1 2 a surveillance radar approach shall only be performed with equipment suitably sited a situation display specifically marked to provide information on position relative to extended centre line of runway to be used distance from touchdown which specifically approved the purpose the appropriate ats authority 8 9 7 1 3 when conducting a surveillance radar approach controller shall comply with following f) surveillance radar approach shall be terminated i) at a distance of 4 km (2 nm) from touchdown or ii) before aircraft enters an area of continuous radar clutter or iii) when pilot reports that a visual approach can be effected whichever the earliest.

  • Question 8-37

    Except when prescribed in procedures or made possible agreements aircraft under radar control shall not be vectored closer to boundary of controlled airspace than Land at nearest suitable aerodrome maintaining vmc inform atc. pans atm doc 4444 8 6 5 vectoring 8 6 5 1 vectoring shall be achieved issuing to pilot specific headings which will enable aircraft to maintain desired track when vectoring an aircraft a controller shall comply with following c) except when transfer of control to be effected aircraft shall not be vectored closer than 4 6 km (2 5 nm) or where minimum permissible separation greater than 9 3 km (5 nm) a distance equivalent to one half of prescribed separation minimum from limit of airspace which controller responsible unless local arrangements have been made to ensure that separation will exist with aircraft operating in adjoining areas.

  • Question 8-38

    Fligh information region fir an airspace within which following services are provided Flight information service alerting service. icao doc 4444 procedures air navigation services air traffic management chapter 1 definitions flight information region (fir) an airspace of defined dimensions within which flight information service alerting service are provided flight information service a service provided the purpose of giving advice information useful the safe efficient conduct of flights alerting service a service provided to notify appropriate organizations regarding aircraft in need of search rescue aid assist such organizations as required.

  • Question 8-39

    Flight information service provided to flights shall include provision of information concerning collision hazards to aircraft operating in airspace classes Flight information service alerting service. Icao annex 11 air traffic services chapter 4 flight information service 4 2 2 flight information service provided to flights shall include in addition to that outlined in 4 2 1 provision of information concerning a) weather conditions reported or forecast at departure destination alternate aerodromes b) collision hazards to aircraft operating in airspace classes c d e f g.

  • Question 8-40

    Flight information service shall be provided to aircraft in order to avoid collision hazards when operating in airspace classes Flight information service alerting service. Icao annex 11 air traffic services chapter 4 flight information service 4 2 2 flight information service provided to flights shall include in addition to that outlined in 4 2 1 provision of information concerning a) weather conditions reported or forecast at departure destination alternate aerodromes b) collision hazards to aircraft operating in airspace classes c d e f g.


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