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Flight Management System (FMS) for the Agusta AW139/AB139 Helicopter
11. Messages
INTRODUCTION
The flight management system (FMS) generates messages that alert
the pilot to certain conditions. The messages are displayed in the
scratchpad and the message (MSG) light is lit on the multifunction
control and display unit (MCDU). Any entry already in the scratchpad
is placed in a stack. The CLR key clears a message and the next
message or entry from the stack is displayed. Correcting whatever
caused the message clears some of the messages.
Two types of messages are contained in the FMS, alerting and
advisory. Alerting messages are more important. The external
annunciator, located on the pilot and copilot instrument panel, and the
message annunciator are lit for alerting messages. Advisory messages
only light on the message annunciator on the MCDU.
MESSAGE LIST AND DEFINITIONS
Table 11--1 contains an alphabetical list of all messages. The list
includes the type of message and a brief explanation of what the
message means.
Message
ACARS DMU
FAILED
ACTIVE MODE IS
MAG HDG
ACTIVE MODE IS
TRUE HDG
ADC 1 FAILED
ADC 2 FAILED
DMU FAILED
AIRCRAFT DB
REQD
A28- - 1146- - 181
REV 3 Mar 2009
Honeywell International Inc. Do not copy without express permission of Honeywell.
Table 11- -1
FMS Messages
Type
ALERTING
An ACARS I/O failure has
occurred.
ALERTING
The magnetic heading has
been automatically selected.
ALERTING
The true heading has been
automatically selected.
ALERTING
The FMS senses an ADC
failure.
ALERTING
The FMS senses a DMU
failure.
ADVISORY The pilot must load an
aircraft database before
selecting the FULL PERF
mode.
Definition
Messages
11-1
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