737 Operations Manual
Non-Normal Maneuvers -
Non-Normal Maneuvers
Copyright © The Boeing Company. See title page for details.
NNM.1.4 D6-27370-400E-TBCE
Ground Proximity Warning
Accomplish the following maneuver for any of these conditions:
• Activation of the “PULL UP” or “TERRAIN TERRAIN PULL UP”
warning.
• Activation of the “TERRAIN AHEAD PULL UP” (JAA) warning.
• Other situations resulting in unacceptable flight toward terrain.
Note: Aft control column force increases as the airspeed decreases. In all cases,
the pitch attitude that results in intermittent stick shaker or initial buffet is
the upper pitch attitude limit. Flight at intermittent stick shaker may be
required to obtain a positive terrain separation. Smooth, steady control will
avoid a pitch attitude overshoot and stall.
Note: Do not use flight director commands.
Note: *Maximum thrust means “maximum certified thrust.” On engines without
electronic thrust limiting capability, overboost or “firewalling the thrust
levers” should only be considered during emergency situations when all
other available actions have been taken and terrain contact is imminent.
Note: If positive visual verification is made that no obstacle or terrain hazard
exists when flying under daylight VMC conditions prior to a terrain or
obstacle warning, the alert may be regarded as cautionary and the approach
may be continued.
Pilot Flying Pilot Not Flying
Disconnect autopilot.
Disconnect autothrottle.
Aggressively apply maximum* thrust.
Simultaneously roll wings level and rotate
to an initial pitch attitude of 20.°
Retract speedbrakes
If terrain remains a threat, continue
rotation up to the pitch limit indicator (if
available) or stick shaker or initial buffet.
Assure maximum* thrust.
Verify all required actions have been
completed and call out any omissions.
Do not change gear or flap configuration
until terrain separation is assured.
Monitor radio altimeter for sustained or
increasing terrain separation.
When clear of terrain, slowly decrease
pitch attitude and accelerate.
Monitor vertical speed and altitude (radio
altitude for terrain clearance and
barometric altitude for a minimum safe
altitude.)
Call out any trend toward terrain contact.
December 06, 2002
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