Back Course (Bc) Mode - Honeywell SPZ-8000 Pilot's Manual

The localizer mode is cancelled by:
Pushing the NAV button on the flight guidance controller
D
Selecting go--around mode
D
Selecting standby mode
D
Selecting the heading lateral steering mode
D
Selecting the back course lateral steering mode
D
Coupling to the cross--side EHSI
D
Tuning another NAV frequency
D
With the autopilot engaged, moving the turn knob out of detent.
D
When the aircraft satisfies the localizer track conditions, the course
error signal is removed from the lateral steering command. This leaves
radio deviation, roll attitude, and lateral acceleration to track the
localizer signal, and compensate for localizer beam standoff in a
crosswind. The system automatically compensates for a crosswind of
up to 45 course error.

BACK COURSE (BC) MODE

The back course mode automatically intercepts, captures, and tracks
the back course localizer signal. When flying a back course localizer
approach, glideslope capture is automatically inhibited. The back
course mode is set up and flown exactly like a front course localizer
approach, except the BC button on the flight guidance controller is
pushed.
A28--1146--055
REV 2
SPZ--8000 Digital Integrated Flight Control System
Modes of Operation
8-23