Published Report (DOT/FAA/CT-94-36)

and NTZ entry frequency. A detailed operational assessment of
each TCV was conducted by the TWG. Controller post-run and
post-simulation questionnaire responses were qualitatively
analyzed. These findings, as well as the risk assessment
findings, are presented in the following sections.
TABLE 4.
BLUNDERS THAT RESULTED IN A CONFLICT
Response
n = 431
No
Response
n = 999
Evading Aircraft/Blunder Degree
Flight Simulator
TGF Aircraft
(n = 1170) (n = 260)
10 20 30 10 20 30
0.8%
n=12
1.4%
n=2 0
5.7%
n=8 2
16.5%
n=236
0.8%
n=12
1.5%
n=22
4.7%
n=67
8.0%
n=115
49.3%
n=705
0.7%
n=10
1.7%
n=2 5
8.7%
n=124
TABLE 5.
EVADING FLIGHT SIMULATOR DATA
Flight Simulator Number of Percent of
Conflicts
Conflicts
MD-88 207 17.7
B-727 457 39.0
B-737 191 16.4
B-74 7-4 00 79 6.8
LlOll 108 9.2
*
4.2.1 Conflicts.
Flight simulators were the evading aircraft in 1170 conflicts.
The full range of CPA's for flight simulator evaders is shown in
figure 4. The mean CPA for these conflicts was 3697 ft (s.d. =
1484 ft, range 280 ft to 10,357 ft). Table 6 presents CPA data
for flight simulator evaders.
23