Honeywell SPZ-8000 - 32 Category II Invalid Annunciator

SPZ--8000 Digital Integrated Flight Control System
A28--1146--055
REV 2
8-39
Modes of Operation
If the above conditions are not met when CAT 2 is selected, CAT 2
INVALID is displayed on line two of the advisory display for 5 seconds,
as shown in Figure 8--32.
AD--58152@
Category II Invalid Annunciator
Figure 8--32
Once the aircraft has flown below 800 feet radio altitude, the following
conditions must be met for CAT 2 to remain valid:
D Dual IRS valid
D Single DADC valid
D Single radio altitude valid
D Single flight guidance computer valid
D Dual ILS data valid
D No ILS data miscompare
D Approach track and dual couple
D Autopilot engaged.
After CAT 2 has been established and any invalid occurs, the flight
guidance computer annunciates CAT 2 INVALID on the advisory
display and lights the RESET light, as in Figure 8--32. At the same time,
if the aircraft is above 200 feet radio altitude, the EFIS annunciates
CAT 2 on the EADI . If the aircraft is below 200 feet radio altitude, EFIS
displays a flashing CAT 2. If CAT 2 goes invalid because radio altitude
fails, the EFIS displays a flashing CAT 2 regardless of the existing radio
altitude. Pushing the RESET button clears all CAT 2 warning
messages.