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

a. NTZ transgression frequency:
b. NBO frequency;
c. Parallel conflict frequency (i.e., conflicts between
aircraft on different approach courses); and
d. Parallel conflict slant range miss distances.
Any conflict that resulted in a CPA less than 500 ft was
considered a TCV and was investigated to determine its
operational impact. A comprehensive review of TCV's, including
audio/visual information, controller-pilot communications, and
computer data, was conducted to ascertain whether any single
factor contributed to the severity of the conflict.
The communication frequencies of the blundering and evading
aircraft and visual components of each run were recorded on a
Super-VHS video cassette recorder. Complete audio recordings
were made using a 20-channel DICTAPHONE audio recorder and a 9-
channel IONICA audio recorder. Both the DICTAPHONE and
the IONICA systems were recorded from the AMECOM system and
operated independent of one another and the TGF operating system.
3.1.1 0 uestionnaires and Observer Loas.
After controllers participated as a monitor controller, they
completed a Post-Run Controller Questionnaire. This
questionnaire addressed the level of activity, stress, and mental
effort they experienced during the run. When a TCV occurred,
controllers described the incident on a TCV Statement.
Controllers also completed a Post-Simulation Questionnaire at the
conclusion of their participation in the simulation. The Post-
Simulation Questionnaire addressed the operational viability of
the display, the equipment, and the runway configuration. A copy
of these questionnaires can be found in appendix F.
Technical observers, simulation observers, and site coordinators
each recorded information using logs designed specifically for
their task. In general, the logs were devised to permit
observers to record information pertaining to blunders, TCV's,
NBO's, simulation problems, and the like, without being
distracted from their task. Site coordinator logs were developed
more specifically to record approach information. A copy of
these logs can be found in appendix J. Information provided by
these logs was used, along with the controller questionnaires, to
support computer data files.
3.2 ACCEPTANCE CRITERIA.
This simulation evaluated the ability of controllers using FMA
displays to monitor final approach traffic at DIA. As stated in
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