Hi. My name is Cliff Noble.
My research involves discovering how well singletask and
dualtask testing methods can predict novice,
nonnative-English-speaking pilots' ability to understand and
comply with instructions in English while piloting aircraft in
American airspace. I am interested in how much effort is required
of pilots to attend to various levels of language and flight-task
difficulty during flight emergencies and in other non-routine
situations(unexpected communications from ATC, unexpected
turbulence, and so forth).
While operating an aircraft, the accuracy and efficiency of the spoken English of pilots and air-traffic-controllers is often critical for safety. Modern technology allows for hidden costs of language performance to be measured and studied. Desktop technology is useful in assessing language performance under dynamic loads that simulate actual flight conditions.
Language Issues
I analyzed English-language performance data on novice, international-airline-pilots-under-instruction (International PUIs) using some interactive tests that I developed for measuring pilots' ability to understand and speak English while they operate aircraft in American airspace. I developed the Noble Part-Task Flight Simulator (NPTS)program ©1997, which is a voice generator that fires digitized and simulated air traffic control commands while allowing the researcher to fly simple heading and altitude changes, set transponder codes and change radio frequencies. The researcher, who simulates a flight instructor or flight examiner, flies NPTS (developed in SuperCard) while sitting alongside the participant, who is flying Microsoft Flight Simulator 98 or 2000. This allows the researcher practical opportunities to observe the actions of the participant, while allowing the researcher a safe and non-obtrusive means to input altitude and heading changes that the participant flies on a Microsoft Flight Simulator experience. Noble's Part-Task Flight Simulator automatically records and measures flight performance based on this non-obtrusive collection of flight variables. How does it work?
The researcher and the participant wear headsets with boom-mikes attached, which are plugged into a video/audio mixer. The mixer carries the ATC background noise form the researcher's lap top, the voices from the researcher and participants' boom mikes, and the converted video signal from the computer screen of the participant's Microsoft Flight Simulator experience--to a VCR, where the video and audio are captured in real time. A data sucker software program runs simultaneously with Microsoft Flight Simulator to record flight-performance data into an Excel file. The purpose of recording the sounds and screen action on VCR is to measure and document the efficiency and accuracy of the participants' verbal responses and manual flight responses to the verbal commands initiated by the Air-Traffic Controller (ATC), or by the "flight examiner.".
NPTS calculates and fires FAA certified ATC commands that are realistic for the participant's current flight situation while he or she is flying Microsoft Flight Simulator scenarios. The part-task flight simulator's programming code was designed and developed by the researcher using interpretive code and SuperCard, a multimedia authoring tool.
The basic theoretical framework of the new testing technology is Kahneman's (1973) limited capacity model of attention and the dual-task technique, which is a time-shared task. Tracking performance, which is the secondary task of interest, indexes language performance, which is the primary task of interest. It is assumed that the participants will direct their attention to the primary task to the best of their ability while dedicating remaining effort to the tracking task whenever possible.
Note: Michael Gibbs of Honeywell built the HSI XCOMMAND component that is used with the Noble Part-Task Flight Simulator program. Dr. Richard Feifer helped me build a production stack to manage the memory of the program. You can contact Mike at Michael.Gibbs@Honeywell.com and Dr. Richard Feifer at feifer@loveandlearn.com
Book Reviews
Links of interest
E-Mail: cliffnoble@mac.com