Effects of a Final Approach Runway Occupancy Signal (FAROS) on Pilots' Flight Path Tracking, Traffic Detection, and Air Traffic Control Communications
February 2005
John Helleberg, The MITRE Corporation
ABSTRACT
Eighteen pilot participants with varying experience levels flew 36 approaches in a medium fidelity cockpit
simulator. Eighteen baseline trials were flown with a standard Precision Approach Path Indicator (PAPI) and 18
trials were flown with the proposed Flashing PAPI (FPAPI). The results showed a significant increase in lateral
tracking error with the FPAPI as compared to the PAPI trials, but no increase in vertical tracking errors. There was
also a trend toward an increase in the number of radio communications with the FPAPI. Pilots were able to
determine runway occupancy status and land or go-around as required in both the baseline and FPAPI trials.
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