18R 18L
17R 17C
36L 36R
35L35C
17L
35R
13R
31
L
13
L
31R
Figure 1 Proposed PT systems and new taxiways at DFW
The EAD, through an agreement with the FAA, acquires the flight track data every day of the
year around the clock. The FAA provides Automated Radar Terminal System (ARTS) data
through an interface called the Gateway. All flight data, such as flight number and altitude
associated with a specific aircraft’s flight track is provided through the FAA’s ARTS system.
The proprietary software (TAMIS/FliteGraph) maintained by EAD collates and processes the
data from ARTS and ASR-9 radar that has embedded identification about each flight, such as
flight date/time, type of operation, flight ID, equipment, runway, and navigation fix. The
software continually updates the data with a built-in complex mathematical program that
calibrates the height with reference to DFW ground elevation. This data from the proprietary
software is exportable into any database program. Aircraft models in the arrival and departure
flight track data are shown in Table 1. Another advantage of the data is that it contains
information on the runway used by both arriving and departing flights at DFW as shown in Table
2.
The software uses virtual vertical planes in space, which are placed like gates on the (South
Flow) arrival path of runways 18L and 17C as shown in Figure 2. There are four gates placed at
2,650, 5,000, 10,000, and 15,000 feet from the end of the runway. Similarly, the gates are placed
at the same distances along the departure path. The gates are configured in an identical manner
for north flow operations. The flight data including the date and time of entry into the gate is
obtained from the software for the aircraft that crosses the gate.
Satyamurti and Mattingly
3
________________________________________________________________________
3
Table 1 Aircraft Models in the Flight Track Data
AIRBUS
A300-600
B717-200
MD11
ASTR
EMB135
A310
B727-100
MD80
BE40
EMB145
A319
B737-300
MD82
C208
H25B
A320
B737-400
MD83
C500
H25C
A340-300
B737-500
MD87
C550
LJ31
B737-700
MD88
CRJ1
LJ45
B737-800
MD90
CRJ2
LJ55
B747-100
DC8
CRJ7
RJ85
B747-200
DC9
SF340
B747-400
DC9-30
B757-200
DC9-40
B767-200
B767-300
B777-200
B777-300
BOEING
OTHERS
Table 2 Flight track data for arrival and departure flights
Gate Time
Distanc
e from
Runwa
y
Flight ID Pen X
Elev
above
DFW
Elev
above
MSL
Flight Time
Gate Time
Distanc
e from
Runway Flight ID Pen X
Elev
above
DFW
Elev
above
MSL
0:08:44
2650 KHA705
2677
889
1489
8/2/2005 7:58
7:57:31
2650 AAL657
3233
259
859
2:40:48
2650 UPS924
2254
1664
2264
8/2/2005 8:00
7:59:21
2650 AAL855
3221
234
834
2:46:20
2650 UPS310
2502
1208
1808
8/2/2005 8:42
8:41:38
2650 AAL1467
3268
228
828
2:52:48
2650 UPS608
2544
1586
2186
8/2/2005 8:44
8:43:34
2650 AAL1361
3268
316
916
3:12:58
2650 UPS6082
2604
1660
2260
8/2/2005 8:47
8:46:35
2650 COA1815
3261
368
968
3:22:26
2650 UPS776
3250
1263
1863
8/2/2005 8:48
8:47:57
2650 AAL845
3187
288
888
5:05:14
2650 DLH8211
2340
909
1509
8/2/2005 8:56
8:56:02
2650 TRS117
3221
289
889
6:05:29
2650 COA214
3032
1419
2019
8/2/2005 9:24
9:23:46
2650 TRS127
3214
291
891
6:15:57
2650 UAL1514
3127
1237
1837
8/2/2005 9:28
9:27:46
2650 EGF824
3204
324
924
6:19:47
2650 USA582
3519
1325
1925
8/2/2005 9:34
9:33:14
2650 DAL1788
3295
255
855
6:31:57
2650 AWE620
2584
1354
1954
8/2/2005 9:38
9:37:52
2650 COA1131
3242
251
851
6:38:02
2650 AMT204
3502
1178
1778
8/2/2005 9:41
9:40:15
2650 AAL839
3246
320
920
7:09:06
2650 UPS2783
4534
1555
2155
8/2/2005 9:43
9:42:47
2650 AAL1159
3233
287
887
7:10:24
2650 UPS9403
2134
1613
2213
8/2/2005 9:45
9:44:15
2650 EGF690
3218
318
918
7:12:38
2650 GRO327
2367
1235
1835
8/2/2005 9:51
9:50:29
2650 AAL603
3245
305
905
Runway 18L departures
Runway 17C arrivals
DESCRIPTION OF FLIGHT TRACK DATA
The height data obtained from the software are discrete and independent of each other. The
aircraft height in the approach path is dependent on the aircraft type, travel speed, aircraft
weight, where the aircraft will touch down on the runway, separation between successive
aircraft, the visibility, wind direction and speed. The height of each aircraft is independent of the
height of the other aircraft in the arrival stream. Similarly, on the departure path, the aircraft
height depends on the aircraft’s weight, speed and rate of climb, the wind direction and speed,
visibility, navigational fix, designated flight path and preceding aircraft’s flight path, direction
Satyamurti and Mattingly
4
________________________________________________________________________
4
and travel speed. Once again, each aircraft’s departure height is independent of the other
departing aircraft.
The analysis is performed on the presumption that the height data obtained from the EAD
propriety software has an accuracy of
20 ft [7] with reference to the actual position of an
aircraft in airspace. Therefore, the data used in the analysis is appropriate and practical to
determine the aircraft height above the centerline of PT on the approach and departure paths.
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