26. AUTOPILOT OPERATIONS
26-24
26.7.3 Other route steering indications and alerts
Route steering indications in the Route Information box
Permanent alerts appear in the [Route Information] box in red in any the steering
mode. In the example below the [XTD] value is shown in yellow when the vessel is
outside the channel.
Route steering alerts
Alert "153 Track Control Stop" appears when the heading signal is lost.
Alert "156 Sensor Failure" appears when there is no gyro data or the conditions of
Alert 156 have been valid for the last minute.
Note: For IEC 62065 Ed. 2 complying autopilots (FAP-3000, PR-9000, PT-900), the
ECDIS releases Alert "156 Heading Failure", "156 Speed Failure", "156 Position
Failure" against heading, speed (both VBW and VTG fail) or position failure. If multi-
ple sensor failures occur simultaneously, the same alert number is used but the alert
titles are different.
Alert "158 Course Difference" appears when there is a large difference between the
planned course and the current course.
Alert "172 Off Track Alarm" appears when your vessel is off track.
Alert "30850 End of Track" appears when your vessel is near the last WPT in the
route monitored.
Alert "30852 AP Receive Error" appears when the ECDIS cannot communicate with
the Autopilot. Change the steering mode to AUTO (HEADING CONTROL on FAP-
3000, HC on PR-9000).
Alert "30853 Use MAN Steering" is instruction for the user to change the steering
mode to AUTO (HEADING CONTROL on FAP-3000, HC on PR-9000) or HAND. This
alert is generated if there is not enough conditions to continue the TCS.
Alert "30854 Speed Recovered" informs that the speed log or VTG input has been
restored after its loss. (IEC 62065 Ed. 2 complying autopilots)
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