737 MAX Flight Crew Operations Manual
Supplementary Procedures -
Warning Systems
SP.15.2
MN-FLT-OH-201
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• “TERRAIN TERRAIN PULLUP" aural sounds
• terrain display test pattern shows on navigation displays
• TERRAIN caution message shows on navigation displays.
• "OBSTACLE OBSTACLE PULLUP" aural sounds
• RAAS database version (RCD xxxxx) shows on navigation
displays.
During the test the RUNWAY INOP light illuminates and one of the
following aurals will announce the status of the ORW and RAAS system:
• RUNWAY AWARENESS OK - FEET/METERS (As installed)
• RUNWAY AWARENESS NOT AVAILABLE
• RUNWAY AWARENESS INOP
• "AIRSPEED LOW" aural sounds
Note:
If the test switch is held until the aurals begin, additional GPWS
aural warnings are tested.
Overrun Warning (ORW) System and Runway Awareness and
Advisory System (RAAS) Inhibit Operation
1B785, 1J585 - 1J594
Before departure if one or more of the following exist:
• The airport or runway is not in the GPWS database
• A NOTAM applies to the intended runway
• Airline policy prohibits the use of RAAS for an airport or runway.
RUNWAY INHIBIT switch ............................................ INHIBIT
Note:
If the RUNWAY INHIBIT switch is in the INHIBIT
position, and the airspeed is 250 knots or greater for 60
seconds or more, the RUNWAY INOP light illuminates.
The RUNWAY INOP light extinguishes when airspeed is
below 250 knots.
After takeoff:
RUNWAY INHIBIT switch ...............................................NORM
Before approach if one or more of the following exist or are planned:
• The airport is not in the GPWS database
• A NOTAM applies to the intended runway
• Airline policy prohibits the use of ORW for an airport or runway.
• Conducting Land and Hold Short Operations (LAHSO).
• Conducting Touch and Go landings
• Landing altitude is above 10,000 feet pressure altitude
October 26, 2021