The University of Tennessee Space Institute (UTSI) completed flight testing with an airframe-referenced localized audio
cueing display. The purpose was to assess its affect on pilot performance, workload, and situational awareness in two
scenarios simulating single-pilot general aviation operations under instrument meteorological conditions. Each scenario
consisted of 12 test procedures conducted under simulated instrument meteorological conditions, half with the cue off,
and half with the cue on. Simulated aircraft malfunctions were strategically inserted at critical times during each test
procedure. Ten pilots participated in the study; half flew a moderate workload scenario consisting of point to point
navigation and holding pattern operations and half flew a high workload scenario consisting of non precision approaches
and missed approach procedures. Flight data consisted of aircraft and navigation state parameters, NASA Task Load
Index (TLX) assessments, and post-flight questionnaires. With localized cues there was slightly better pilot technical
performance, a reduction in workload, and a perceived improvement in situational awareness. Results indicate that an
airframe-referenced auditory display has utility and pilot acceptance in general aviation operations.
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