Honeywell SPZ-8000 - 30 EADI in Dual Couple Approach Mode

SPZ--8000 Digital Integrated Flight Control System
A28--1146--055
REV 2
8-37
Modes of Operation
Figure 8--30 shows the EADI for the dual couple approach mode.
AD--58150@
750
EADI in Dual Couple Approach Mode
Figure 8--30
Dual couple approach mode is cancelled in one of two ways:
D Automatic Cancellation
— Whenever invalid data from one ILS receiver is detected, the
flight guidance computer selects the remaining side ILS data for
guidance.
— When an unflagged ILS data mismatch occurs, the flight
guidance computer performs automatic sensor voting and
selection.
NOTE: In either case, the system automatically reverts to single
couple on the side voted by the flight guidance computer.
D Manual Cancellation
— The flight director couples to the side it was using before dual
couple was engaged.