AIRPLANE
OPERATIONS
MANUAL
NORMAL PROCEDURES
REVISION 37
1-02-13
Page
3
Code
01
AOM-145/1114
Fire Detection............................................................... CHECKED
Press and hold (for at least 2 seconds) the Fire Detection Test
button while observing the following events:
EICAS messages:
Warning: APU FIRE, ENG 1 (2) FIRE, BAGG SMOKE (*)
Caution: APU FIREDET FAIL, E1 (2) FIREDET FAIL
(*) for class C compartment only.
Fire Extinguisher handles illuminated.
BAGG EXTG button illuminated (for airplanes with baggage
hold extinguishing only).
Fire aural warning.
APU Master .................................................................. ON/WAIT 3
SECONDS/
START/THEN ON
Turn the knob to ON, wait 3 seconds, and then momentarily to
START. Monitor APU EGT and RPM increasing within limits. The
APU generator will come on line after RPM exceeds 95%.
NOTE: For airplanes equipped with AHRS-900 or IRS, do not start
the APU before 30 seconds after airplane energization to
prevent disturbances in the AHRS/IRS initialization.
Avionics Master 1 & 2 .................................................. ON
Switch the avionics master to ON. Verify APU voltage and
amperage on electrical page. Amperage may be greater than 400 A
(APU GEN OVLD may appear on the EICAS) at first while the APU
recharges the batteries. Do not bring any additional load on line
until amperage is below 400 A. Allow few seconds for the APU
GEN OVLD message to disappear before switching the avionics
master to ON.
Turn the NAV lights ON, be it day time or night time. NAV lights ON
show the ramp personnel that the airplane is powered up, and also
make wingtips and tail end more visible to people driving vehicles
in the proximity of the airplane.
The LOGO light may also be switched ON during night time.
Allow 3 minutes for the APU to warm up before adding pneumatic
load.
NOTE: Following every APU start attempt, allow 3 minutes of APU
warm-up before adding pneumatic load. This is particularly
important after unsuccessful APU start attempts, so as to
permit that excessive fuel accumulated during the previous
start attempts is burned, preventing fuel odor inside the
cabin/cockpit.
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