737 MAX Flight Crew Operations Manual
Warning Systems -
Controls and Indicators
15.10.10
MN-FLT-OH-201
3
Ground Proximity System Test (SYS TEST) Switch
Push –
• momentarily on ground:
•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.
1B785, 1J585 - 1J594
•Runway Awareness and Advisory System (RAAS) selected callouts
sound.
•AIRSPEED LOW.
• until self-test aurals begin, on ground, above indications always occur
first, followed by these additional aurals, as described in section 15-20:
•radio altitude based alerts
•bank angle alert
•approach callouts
•windshear alert
•look ahead terrain alerts
• system test inhibited in-flight.
4
Ground Proximity FLAP INHIBIT Switch
FLAP INHIBIT – inhibits ground proximity TOO LOW FLAPS alert.
NORM (guarded position) – Normal TOO LOW FLAPS alert active.
5
Ground Proximity GEAR INHIBIT Switch
GEAR INHIBIT – inhibits ground proximity TOO LOW GEAR alert.
NORM (guarded position) – Normal TOO LOW GEAR alert active.
6
Ground Proximity Terrain Inhibit (TERR INHIBIT) Switch
TERR INHIBIT – inhibits look–ahead terrain alerts and terrain display.
NORM (guarded position) – Normal terrain alerts and terrain display active.
1B785, 1B786, 1B814 - 1J594
7
Ground Proximity Runway Inhibit (RUNWAY INHIBIT) Switch (as
installed)
1B785, 1J585 - 1J594
RUNWAY INHIBIT – inhibits RAAS callouts and alerts.
1B785, 1J585 - 1J594
NORM (guarded position) – Normal RAAS alerts and RAAS display active.
Inhibits: In-Air Overrun Warning and On-Ground Overrun Warning.
March 1, 2021
