737 Flight Crew Operations Manual
Normal Procedures -
Amplified Procedures
Boeing Proprietary. Copyright © Boeing. May be subject to export restrictions under EAR. See title page for details.
D6-27370-866-EGP NP.21.13
Verify that the master FIRE WARN lights are illuminated.
Verify that the MASTER CAUTION lights are illuminated.
Verify that the OVHT/DET annunciator is illuminated.
Master FIRE WARN light – Push
Verify that the master FIRE WARN lights are extinguished.
Verify that the fire warning bell cancels.
Verify that the engine No. 1, APU and engine No. 2 fire switches
stay illuminated.
YW273, YW274
Verify that the engine No. 1 and engine No. 2 start lever lights stay
illuminated.
Verify that the ENG 1 OVERHEAT and ENG 2 OVERHEAT
lights stay illuminated.
Verify that the WHEEL WELL light stays illuminated.
EXTINGUISHER TEST switch – Check
TEST switch – Position to 1 and hold.
Verify that the three green extinguisher test lights are
illuminated.
TEST switch – Release
Verify that the three green extinguisher test lights are
extinguished.
Repeat for test position 2.
APU switch (as needed) ...............................................................START
Note: If extended APU operation is needed on the ground and the
airplane busses are powered by AC electrical power,
position an AC powered fuel pump ON. This will extend the
service life of the APU fuel control unit.
Note: If fuel is loaded in the center tank, position the left center
tank fuel pump switch ON to prevent a fuel imbalance
before takeoff.
CAUTION: Center tank fuel pump switches should be
positioned ON only if the fuel quantity in the
center tank exceeds 453 kgs.
CAUTION: Do not operate the center tank fuel pumps with the
flight deck unattended.
September 15, 2016
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