Human Factors Evaluation of Aircraft Engine Instrument Displays

Relative merits of three types of aircraft engine instruments were examined in respect to aircraft changing conditions. The experimental design considered interference, workload, age, and experience. Instruments were comparable so far as instrument size and characteristics would allow. Experimental results and comments indicated the experimental apparatus and failure parameters were comparable to actual aircraft situations. It was discovered that vertical-scale engine instruments required less recognition and scan time. Age and flight experience were not significant in this experimental design.