Embraer EMB145, Operation Manual

Page: 1357 / 2662

GROUND SERVICING
AIRPLANE
OPERATIONS
MANUAL
1-12-60
Page
24
Code
01
REVISION 41
Copyright © by Embraer. Refer to cover page for details.
A
O
M
-1
4
5
/1
1
1
4
ATA
EICAS
MESSAGE
or
CONDITION
LOCATION PROCEDURE
34
AHRS 2
FAIL
(continued)
EICAS
(continued)
−
Operator can change the
present position coordinates
via the bezel pushbuttons
and the data set knob.
(c) After the present coordinates
are set, push the ENT
pushbutton to send the
coordinates to the AH-900
computer.
NOTE: At the end of the
alignment, the AHRU
conducts an alignment-
performance test on the
entered latitude. If the entered
does not pass the alignment-
performance test, the AHRS 1
ALN FAULT message shows
on the EICAS display. If a
subsequent entry of the same
latitude does not pass the
alignment-performance test,
the AHRS 1 FAIL message
shows on the EICAS display.
Under the preceding
conditions, the AHRU still
accepts latitude entries. If an
entry passes the alignment-
performance test:
−
AHRS 1 FAIL message
goes out of view, and
−
AHRU clears the bits that
were set to indicate the
failure.
(2) Wait until the alignment is
completed.