737 MAX Flight Crew Operations Manual
Supplementary Procedures
Chapter SP
Warning Systems
Section 15
MN-FLT-OH-201
SP.15.1
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15 Warning Systems
Warning Systems
File Highlight
Ground Proximity Warning System (GPWS) Test
Verify IRS alignment is complete.
Verify that the guards are closed for all GROUND PROXIMITY
INHIBIT switches.
Ground proximity SYS TEST switch ......................... Push momentarily
YA211 - YV671
Verify the following:
• BELOW G/S and GPWS INOP lights illuminate
• TERR FAIL and TERR TEST annunciations show on navigation
displays
• PULL UP and WINDSHEAR alerts illuminate
• "GLIDESLOPE", "PULL UP" and “WINDSHEAR" aurals sound
• "TERRAIN TERRAIN PULLUP" aural sounds
• terrain display test pattern shows on navigation displays
• TERRAIN caution message shows on navigation displays.
YC095, YF631 - YK653, YK759 - YV671
• "OBSTACLE OBSTACLE PULLUP" aural sounds
YC095, YC573, YD303 - YK653, YK729, YL621 - YL956, YN107 - YN112, YN701 - YV671
(SB Changes YC453, YM648)
• "AIRSPEED LOW" aural sounds
Note:
If the test switch is held until the aurals begin, additional GPWS
aural warnings are tested.
Ground Proximity Warning System (GPWS), Overrun
Warning (ORW) System, and Runway Awareness and Advisory
System (RAAS) Test
1B785, 1J585 - 1J594
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 annunciations show on navigation
displays
• PULL UP and WINDSHEAR alerts illuminate
• “GLIDESLOPE”, “PULL UP” and “WINDSHEAR" aurals sound.
October 26, 2021