ATIS Updating Whenever ATIS is provided the broadcast information shall be updated ? Obtaining > AIM
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.
ATIS broadcast ?
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.
ATIS broadcast messages containing departure and arrival information should include cloud cover when the clouds are ?
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. 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. 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. 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. 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. 8 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. 9 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
. 10 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. 11 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. 12 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. 13 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. 14 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. 15 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. 16 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. 17 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. 18 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. 19 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. 20 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. Exclusive rights: Content under private and protected license, reproduction prohibited and prosecuted.
