Expected Steering Performance Under Critical Failure - Furuno FMD-3200 Operator's Manual

26. AUTOPILOT OPERATIONS
26.9.3

Expected steering performance under critical failure

Below is a summary of the system behavior in different failures in the GoSEA or
GoAW steering mode.
Lost heading to Autopilot and/or ECDIS
Immediately • These alerts and
warnings may be gen-
erated at the ECDIS:
1) Alert "450 Heading
Sensor Not Avail-
able"
2) Alert "902 No Filter
Source of COG/
SOG"
3) Alert "903 No Filter
Source of Heading"
• The lamp
topilot's Steering Con-
trol Unit (or Control
Panel) lights.
Within a few • Alert "153 Track Con-
seconds trol Stop"*
*Transferred to BN-
WAS if not acknowl-
edged within 30
seconds.
• Alert "156 Sensor
Failure"
• Alert "665 Auto Pilot
Mode Conflict"
*1
PT-500A: EMRG ALM; PR-6000: RC, FAP-2000, FAP-3000: ALARM
26-26
Related
alerts
*1
on the Au-
TCS stops and
• If the ship is running
straight, the rudder or-
der is frozen at the last
value to approximately
continue ahead.
• If the ship is turning, the
rudder order is frozen at
the last value to approx-
imately continue the
rate of turn.
Expected system
performance
Operator
action
• Acknowledge alerts.
• Monitor situation.
• Acknowledge alerts.
• Monitor situation.