Embraer EMB145 Operation Manual page 276

SUPPLEMENTARY
PROCEDURES
ENVIRONMENTAL
AFTER START
Ice Detection Override Knob......................................... ENG
The Ice Detection Override Knob must be at ENG during all ground
operations (in icing conditions) except during ice protection system
test. Wing and stabilizer anti-icing must be kept off.
Crossbleed .................................................................... AUTO
CAUTION: • BOTH ENGINE BLEEDS MUST BE OPEN, IN ORDER
TO ASSURE BLEED AIR FLOW THROUGH THE
LEADING EDGES. APU BLEED MUST NOT BE USED.
• DELAYING THE USE OF THE ENGINE ANTI-ICING
SYSTEM UNTIL ICE BUILD-UP IS VISIBLE FROM THE
COCKPIT MAY RESULT IN ICE INGESTION AND
POSSIBLE ENGINE DAMAGE OR FLAME-OUT.
NOTE: - When thrust is set to below 83% N2, the ENG 1-2 A/ICE
FAIL message may appear due to the low pressure available
for anti-icing. Moving thrust levers forward will cause the
message to disappear.
- On airplanes Pre-Mod. SB 145-30-0028, when Ice Detector
Override Knob is at ENG on the ground, TAT heating is on.
TAT and SAT reading may increase and cause an invalid
indication (amber dashes) to appear. If TAT invalid indication
causes the AHRS reversion to Basic Mode, continue the
mission. The TAT invalid indication and AHRS reversion will
remain until the airplane attains sufficient speed to bring the
TAT sensors within the normal range of operation.
- AHRS BASIC MODE is inhibited on the ground for airplanes
modified to EICAS version 16.5.
- On airplanes Post-Mod. SB 145-30-0028 or S/N 145.180 and
on, TAT heating is on when Thrust Levers are set above 65°
position or when the airplane is airborne.
Engine Instruments ....................................................... MONITOR
Continue to monitor engine instruments, mainly oil pressure and
temperature. Apply associated abnormal procedure if any failure
arises.
Main Panel .................................................................... CHECK
Check proper operation of all instruments and systems.
Page
6
1-02-79
AIRPLANE
OPERATIONS
MANUAL
Code
01
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REVISION 41