737 Flight Crew Operations Manual
Supplementary Procedures Chapter SP
Warning Systems Section 15
Boeing Proprietary. Copyright © Boeing. May be subject to export restrictions under EAR. See title page for details.
D6-27370-866-EGP SP.15.1
15 Warni ng SystemsWarning SystemsFile Highlight
Ground Proximity Warning System (GPWS) Test
YK981 - YK994, YW273, YW274
Verify IRS alignment is complete.
Verify that the guards are closed for all GROUND PROXIMITY
INHIBIT switches.
Ground proximity SYS TEST switch ......................... Push momentarily
Verify the following:
• BELOW G/S and GPWS INOP lights illuminate
• TERR FAIL and TERR TEST show on navigation displays
• PULL UP and WINDSHEAR alerts illuminate
• “GLIDESLOPE”, “PULL UP” and “WINDSHEAR” aurals sound
• terrain display test pattern shows on navigation displays
• “CAUTION TERRAIN” aural sounds and TERRAIN caution
message shows on navigation displays.
Note: If the test switch is held until the aurals begin, additional GPWS
aural warnings are tested.
Ground Proximity Warning System (GPWS) and Runway
Awareness and Advisory System (RAAS) Test
YK995 - YQ456
Verify IRS alignment is complete.
Verify that the guards are closed for all GROUND PROXIMITY
INHIBIT switches.
Ground proximity SYS TEST switch ......................... Push momentarily
Verify the following:
• BELOW G/S and GPWS INOP lights illuminate
• TERR FAIL and TERR TEST show on navigation displays
• PULL UP and WINDSHEAR alerts illuminate
• “GLIDESLOPE”, “PULL UP” and “WINDSHEAR” aurals sound
• terrain display test pattern shows on navigation displays
• “CAUTION TERRAIN” aural sounds and TERRAIN caution
message shows on navigation displays
September 15, 2016
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