Primary Flight Display Symbols
Vertical Deviation Indicator
The Vertical Deviation Indicator is a magenta symbol that indicates the airplane's vertical path computed by the FMGC. This symbol is displayed during the descent and approach phases of flight.
The scale of the deviation is the same as the altitude scale next to it (approximately +/-500 feet). When the deviation exceeds +/-500 feet, the symbol stays at the limit. The PROG page displays the exact value.