NAVIGATION AND
COMMUNICATION
AIRPLANE
OPERATIONS
MANUAL
2-18-30
Page
14
Code
01
MARCH 28, 2002
AH-900 EICAS MESSAGES
TYPE MESSAGE MEANING
AHRS 1 (2) OVERHEAT The associated AHRS is
overheated.
CAUTION
AHRS 1 (2) ALN FAULT The associated AHRS did
not complete the alignment
phase successfully.
AHRS 1 (2) FAIL The associated AHRS has
failed.
AHRS 1 (2) ATT MODE The associated AHRS is in
the attitude mode.
AHRS 1 (2) ALN The associated AHRS is in
the alignment phase.
AHRS 1 (2) ON BATT The associated AHRS is
being powered by the
airplane batteries.
ADVISORY
AHRS 1 (2) EXC MOTION The associated AHRS
detected excessive motion
during the alignment phase.
AHRS 1 (2) NO PPOS The present position has
not been set.
AHRS 1-2 NO PPOS The present position has
not been set.
AHRS 1 (2) NO MAG HDG Magnetic heading has not
been set.
AHRS 1-2 NO MAG HDG Magnetic heading has not
been set.
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