737 Flight Crew Operations Manual
Flight Instruments, Displays -
Head-Up Display System -
Displays
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D6-27370-866-EGP 10.12.5
4 Maximum Speed (PRI in flight mode)
Bottom of bar indicates the maximum speed as limited by the lowest of the
following:
• Vmo/Mmo
• landing gear placard speed
• flap placard speed.
Inhibited on the ground.
5 Maximum Maneuver Speed (PRI in flight mode)
When flaps are up, the bottom of the bar indicates the maximum maneuver speed.
This airspeed provides 1.3g maneuver capability to high speed buffet (or an
alternative approved maneuver capability set in the FMC maintenance pages). The
bar may be displayed when operating at high altitude at relatively high gross
weights.
Note: 1.3g maneuver capability occurs at 40 degrees of bank in level flight.
When flaps are not up, the bottom of the bar indicates the placard speed for the
next normal flap setting. The display logic is based on a normal flap setting
sequence of 1, 5, 15, 30, 40. The bar is removed when the flap handle is moved to
the landing flap setting selected on the APPROACH REF page or when the flap
lever is moved to flaps 40. It is also removed with any flap retraction.
6 Speed Bug (PRI in flight, PRI ground modes)
Points to the airspeed:
• manually selected in the IAS/MACH window
• indicates the FMC computed airspeed when the IAS/MACH window is
blank.
When the selected speed is off scale, the bug is parked at the top or bottom of the
tape, with only one half bug visible.
7 Minimum Maneuver Speed (PRI in flight, PRI ground modes)
Top of the bar indicates minimum maneuver speed. This airspeed provides
• 1.3g maneuver capability to stick shaker below approximately 20,000 ft.
• 1.3g maneuver capability to low speed buffet (or an alternative
approved maneuver capability set in the FMC maintenance pages)
above approximately 20,000 ft.
Note: 1.3g maneuver capability occurs at 40 degrees of bank in level flight.
September 30, 2011
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