Collins MCP
Mode Control Panel
Vertical Speed (V/S) Switch
Push –

  • arms or engages V/S command mode
  • commands pitch to hold vertical speed
  • engages A/T in speed mode to hold selected airspeed
  • annunciates V/S pitch mode and illuminates V/S switch light.

Vertical Speed Command Mode

The V/S mode commands pitch to hold selected vertical speed and
engages A/T in SPEED mode to hold selected airspeed. V/S mode
has both an armed and an engaged state.
Engaged –
  • Annunciates V/S pitch mode.
  • Vertical speed display changes from blank to present vertical
    speed.
  • Desired vertical speeds can be selected with vertical speed
    thumbwheel.





With V/S armed, V/S mode is engaged by rotating the vertical
speed thumbwheel.

V/S becomes armed if:
  • Pitch mode is ALT HLD at selected MCP altitude and
  • a new MCP altitude is selected (more than 100 feet from
    current altitude).