Mode Control Panel
Descent –

  • VNAV SPD descent



  • VNAV PTH descent




  • Automatic level-off occurs at MCP altitude or VNAV altitude,
    whichever is reached first
Inhibited below 400 ft RA or if performance initialization not complete.

VNAV mode is terminated by any one of the following:

  • Selecting another pitch mode.
  • Glideslope capture.
  • Reaching end of LNAV route.
FMC update 10.3 and later
  • Transition of glideslope intercept waypoint if G/S is armed.
FMC update 10.3 and later
  • Crosstrack deviation exceeds twice the RNP value during PTH
    descent for an active leg with a database vertical angle and LNAV
    not engaged.
In the event of glideslope intercept waypoint transition, VNAV can be re-
engaged.
  • Autothrottle holds idle.
  • AFDS holds FMC target speed.
  • Autothrottle holds idle but can command FMC SPD mode if
    ground speed becomes too low to maintain FMC vertical path.
  • AFDS tracks FMC descent path.
  • MCP constrained altitude annunciates VNAV ALT
  • VNAV constrained altitude annunciates VNAV PTH.
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Collins MCP
Glareshield - MCP 700/800/900