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5. Radar limit line for control
6. Obstruction (video map)
7. Primary radar returns of obstacles or terrain (can be
removed by MTI)
8. Satellite airports
9. Runway centerlines (marks and spaces indicate
miles)
10. Primary airport with parallel runways
11. Approach gates
12. Tracked target (primary and beacon target)
13. Control position symbol
14. Untracked target select code (monitored) with
Mode C readout of 5,000’
15. Untracked target without Mode C
16. Primary target
17. Beacon target only (secondary radar) (transponder)
18. Primary and beacon target
19. Leader line
20. Altitude Mode C readout is 6,000’
(Note: readouts may not be displayed because of
nonreceipt of beacon information, garbled beacon
signals, and flight plan data which is displayed
alternately with the altitude readout)
21. Ground speed readout is 240 knots
(Note: readouts may not be displayed because of a loss
of beacon signal, a controller alert that a pilot was
squawking emergency, radio failure, etc.)
22. Aircraft ID
23. Asterisk indicates a controller entry in Mode C
block. In this case 5,000’ is entered and “05” would
alternate with Mode C readout.
24. Indicates heavy
25. “Low ALT” flashes to indicate when an aircraft’s
predicted descent places the aircraft in an unsafe proximity
to terrain.
(Note: this feature does not function if the aircraft is not
squawking Mode C. When a helicopter or aircraft is
known to be operating below the lower safe limit, the
“low ALT” can be changed to “inhibit” and flashing
ceases.)
26. NAVAIDs
27. Airways
28. Primary target only
29. Nonmonitored. No Mode C (an asterisk would
indicate nonmonitored with Mode C)
30. Beacon target only (secondary radar based on
aircraft transponder)
31. Tracked target (primary and beacon target) control
position A
32. Aircraft is squawking emergency Code 7700 and is
nonmonitored, untracked, Mode C
33. Controller assigned runway 36 right alternates with
Mode C readout
(Note: a three letter identifier could also indicate the
arrival is at specific airport)
34. Ident flashes
35. Identing target blossoms
36. Untracked target identing on a selected code
37. Range marks (10 and 15 miles) (can be changed/offset)
38. Aircraft controlled by center
39. Targets in suspend status
40. Coast/suspend list (aircraft holding, temporary loss
of beacon/target, etc.)
41. Radio failure (emergency information)
42. Select beacon codes (being monitored)
43. General information (ATIS, runway, approach in
use)
44. Altimeter setting
45. Time
46. System data area
2/17/05 AIM
Surveillance Systems 4−5−5
FIG 4−5−3
NAS Stage A Controllers View Plan Display
This figure illustrates the controller’s radar scope (PVD) when operating in the full automation (RDP) mode, which is
normally 20 hours per day.
(When not in automation mode, the display is similar to the broadband mode shown in the ARTS III radar scope figure.
Certain ARTCCs outside the contiguous U.S. also operate in “broadband” mode.)
26 25
X
X X X
X
XXXX
#
X
X
X
AAL373
280C
191H-33
VIG123
310N
095
NWA258
170 143
AAL353
70 231
2734
R15909
170C
290
2103
N1467F
140 + 143
460
UAL33
100A
296
7700
EMRG
7600
RDOF
1200
1200
85
+ + +
+ UAL712
310N
228CST
1
22 23
27 24
28
29
29
30
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
18 17
19
20
21
H
H
H
H
H
H
H
H
H H
H
H
H
RADAR SERVICES AND PROCEDURES
AIM 2/17/05
4−5−6 Surveillance Systems
EXAMPLE−
Target symbols:
1. Uncorrelated primary radar target [] [+]
2. Correlated primary radar target []
See note below.
3. Uncorrelated beacon target [ / ]
4. Correlated beacon target [ \ ]
5. Identing beacon target []
Note: in Number 2 correlated means the association of
radar data with the computer projected track of an
identified aircraft.
Position symbols:
6. Free track (no flight plan tracking) []
7. Flat track (flight plan tracking) [◊]
　
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