Collins MCP
Mode Control Panel
While engaged in VOR or LOC modes:

  • A autopilot and Captain’s F/D use information from the
    Captain’s course selector and No. 1 VHF NAV receiver.

  • B autopilot and First Officer’s F/D use information from the
    First Officer’s course selector and No. 2 VHF NAV receiver.

  • Different courses and/or frequencies for two VHF NAV
    receivers can cause disagreement between the Captain’s
    and First Officer’s F/D displays and affect A/P operation.
Note:
When a localizer frequency is selected, VHF NAV radios
automatically switch from tail antenna to nose antenna when
VOR/LOC is annunciated (armed or engaged). If antenna switching
does not occur, LOC mode is inhibited.

Note:
Localizer back course tracking is not available.