AIRPLANE
OPERATIONS
MANUAL
PNEUMATICS
AIR CONDITIONING
AND PRESSURIZATION
JUNE 28, 2002
2-14-05
Page
7
Code
01
EICAS MESSAGES
TYPE MESSAGE MEANING
WARNING
BLD 1 (2) LEAK
BLD APU LEAK
Duct leakage in the
associated bleed line.
Temperature in the duct
region exceeds 91°C (195°F).
The switch deactivates at
79°C (175°F).
BLD 1 (2) OVTEMP Associated pre-cooler downs-
tream temperature above
305°C (581°F).
APU BLD VLV FAIL Disagreement between actual
position and commanded
position of the APU Bleed
Valve.
BLD 1 (2) LOW TEMP
Abnormal low or asymmetric
bleed temperature, or pre-
cooler outlet temperature
sensor failure.
CAUTION
BLD 1 (2) VLV FAIL Disagreement between actual
position and commanded
position of the associated
Engine Bleed Valve.
CROSS BLD FAIL Disagreement between actual
position and commanded
position of the Cross-Bleed
Valve.
CROSS BLD SW OFF Cross Bleed Knob selected
CLOSED with at least one
engine running after brake
release.
HS VLV 1 (2) FAIL Disagreement between actual
position and commanded
position of the associated
High Stage Valve.
ADVISORY
BLD 1 (2) VLV CLSD
Associated Engine Bleed
Valve position. This message
is inhibited on ground or
during associated engine
start.
CROSS BLD OPEN Cross Bleed Valve open.
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