ATS Airspace Classifications
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Class
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Type of flight
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Seperation
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Service Provided
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VMC Visibility and Distance from Cloud Minima
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Requirement for:
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Radio
Comm.
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SSR
Mode
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Clearance
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A
***
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IFR only
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All traffic
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Air traffic control service
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8 KM at and above FL 100.
5 KM below FL 100.
1500 M horizontal and 300 M vertical distance from cloud *
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Continuous two-way
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A+C
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Yes
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B
***
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VFR
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All traffic
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Air traffic control service
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8 KM at and above FL 100.
5 KM below FL 100.
1500 M horizontal and 300 M vertical distance from cloud
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Continuous two-way
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A+C
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Yes
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C
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VFR
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VFR from IFR
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Air traffic control service for separation from IFR.
VFR/VFR: Traffic information,
and traffic avoidance advice on request
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8 KM at and above FL 100.
5 KM below FL 100.
1500 M horizontal and 300 M vertical distance from cloud
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Continuous two-way
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A+C
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Yes
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D
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VFR
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NIL
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Air traffic control service.
Traffic information about VFR and IFR
flights, and traffic avoidance advice on request
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8 KM at and above FL 100.
5 KM below FL 100.
1500 M horizontal and 300 M vertical distance from cloud
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Continuous two-way
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No
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Yes
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E
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VFR
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NIL
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Flight information service.
Traffic information as far as practical
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8 KM at and above FL 100.
5 KM below FL 100.
1500 M horizontal and 300 M vertical distance from cloud
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No
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No
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No
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F
***
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VFR
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NIL
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Flight information service
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8 KM at and above FL 100.
5 KM below FL 100.
1500 M horizontal and 300 M vertical distance from cloud.
At and below 900 M (3000 FT) MSL
or 300 M (1000 FT) above terrain whichever is higher:
- 5 KM clear of cloud and in sight of ground or water.
- 3 KM ** clear of cloud and in sight of ground or water.
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No
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No
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No
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G
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VFR
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NIL
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Flight information service
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8 KM at and above FL 100.
5 KM below FL 100.
1500 M horizontal and 300 M vertical distance from cloud.
At and below 900 M (3000 FT) MSL
or 300 M (1000 FT) above terrain whichever is higher:
- 5 KM clear of cloud and in sight of ground or water.
- 3 KM ** clear of cloud and in sight of ground or water
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No****
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No
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No
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* The VMC minima given for airspace class A are for guidance to pilots in case of radio communication failure and do not imply acceptance of VFR flights in airspace class A.
** For aircraft established in the aerodrome traffic circuit, flight is permitted with a flight visibility of at least 1.5 KM clear of cloud and with the aerodrome insight.
*** Airspace classes A, B and F are not used in København FIR.
**** Part of airspace class G - designated Traffic Information Zone (TIZ) and Traffic Information Area (TIA) - has a requirement for continuous two-way radio communication.
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VFR Flight Levels
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000° - 179°
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180° - 359°
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Flight Level
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FT
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Flight Level
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FT
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35
55
75
95
115
135
155
175
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3500
5500
7500
9500
11500
13500
15500
17500
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45
65
85
105
125
145
165
185
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4500
6500
8500
10500
12500
14500
16500
18500
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IFR Flight Levels
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000° - 179°
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180° - 359°
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Flight Level
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FT
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Flight Level
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FT
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30
50
70
90
110
130
150
170
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3000
5000
7000
9000
11000
13000
15000
17000
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40
60
80
100
120
140
160
185
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4000
6000
8000
10000
12000
14000
16000
18000
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IFR Planning vs Operational minima
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Planning minima
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Destination:
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Type (ILS, LLZ, NDB)
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No downgrade
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VV
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D(h) from plate, rounded up to nearest 100' (only non precision approaches)
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VIZ
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Find out facilities (BL 5-60 table 5), Precision approach (table 7), Divide RVR with 1,5 to get VIZ
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Alternative:
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Type (ILS, LLZ, NDB)
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Downgrade
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VV
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D(h) from plate, rounded up to nearest 100' (only non precision approaches)
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VIZ
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Find out facilities (BL 5-60 table 5), Non precision approach (table 6), See in which cat. D(h) is. Divide RVR with 1,5 to get VIZ
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Operational minima
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Destination & Alternative:
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Type (ILS, LLZ, NDB)
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No downgrade
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DA
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Read off the plate (only precision approaches)
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MDA
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Read off the plate (only non precision approaches)
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VIZ
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Find out facilities (BL 5-60 table 5), Precision approach (table 7), Divide RVR with 1,5 to get VIZ
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RVR
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Find out facilities (BL 5-60 table 5), Precision approach (table 7)
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