737 Flight Crew Operations Manual
Flight Instruments, Displays -
PFD/ND – Displays
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10.11.24 D6-27370-866-EGP
PFD – Heading and Track Indications
Heading and Track Indications– General
The heading and track indications display current FMC/ADIRS heading, track and
other information.
1 Current Heading Pointer (white)
Indicates current heading.
2 Track Pointer (white)
Indicates current track.
3 Selected Heading (magenta)
Digital display of the selected heading bug.
4 Selected Heading Bug (magenta)
Indicates the heading selected on the mode control panel. If the selected heading
exceeds the display range, the bug parks on the side of the compass rose in the
direction of the shorter turn to the heading.
5 Magnetic/True Heading Annunciation (green)
Displays selected heading reference:
• MAG indicates display is oriented relative to magnetic north
• TRU indicates display is oriented relative to true north; a white box is
displayed continuously around TRU
• transition from TRU to MAG results in a green box around MAG for 10
seconds
• when TRU is displayed and the airplane descends more than 2000 feet
at a descent rate greater than – 800 feet per minute, an amber box is
drawn around TRU; the box flashes for 10 seconds, then turns steady
amber.
September 15, 2016
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