Speed Intervention (SPD INTV) Switch
Option - With speed and altitude intervention
Push (when VNAV is engaged) –
- IAS/MACH display alternately shows selected IAS/Mach and
blanks.
- When IAS/MACH display is unblanked, FMC speed
intervention is active, FMC target speed is displayed, and
IAS/MACH Selector may be used to set desired speed.
- When IAS/MACH display is blank, FMC computed target
- speed is active and displayed on the airspeed indicator.