Technical Paper
FTE and Pilot Workload Comparison of Perspective Flight Guidance Displays to Conventional Flight Director Symbology in Instrument Approach Applications
2001-09-11
2001-01-2992
Perspective Flightpath Guidance (PFG) Current requirements for precision air navigation are no longer in nautical miles, but tenths of miles as reflected in the RNP3 (Required Navigation Performance) or Required Navigation Performance (desired flight path) of .3 NM (± .n nmi). Flight director guidance for critical maneuvers (those maneuvers with very small or reduced margins for error) is essential for precision navigation requirements. Current generations of guidance symbology (Delta-Veebar and Two-bar) work well, but are limited in their ability to display future flight path information to the pilot and/or the results of pilot control input. Both display symbology sets are designed to follow command guidance from an off-course situation to return to a nominal (null error) solution, known as a compensatory tracking task.
