737 Flight Crew Operations Manual
Automatic Flight -
Controls and Indicators
Boeing Proprietary. Copyright © Boeing. May be subject to export restrictions under EAR. See title page for details.
4.10.6 D6-27370-866-EGP
2 ALTITUDE Display
Displays selected altitude
• displayed altitude is reference for altitude alerting and automatic level–
offs
• altitude range is 0 to 50,000 feet in 100 foot increments
• displays previously selected altitude when power first applied.
3 Vertical Speed (VERT SPEED) Display
Displays:
• blank when V/S mode not active
• present V/S when V/S mode is engaged with V/S switch
• selected V/S when V/S set with thumbwheel
• range is –7900 to +6000 fpm.
Display increments are:
• 50 fpm if V/S is less than 1000 fpm
• 100 fpm if V/S is 1000 fpm or greater.
4 Vertical Speed Thumbwheel
Rotate –
• DN –
• sets vertical speed in VERT SPEED display
• increases rate of descent or reduces rate of ascent.
•UP –
• sets vertical speed in VERT SPEED display
• increases rate of ascent or reduces rate of descent.
5 Level Change (LVL CHG) Switch
Push –
• LVL CHG switch light illuminates
• pitch mode annunciates MCP SPD for climb or descent
• autothrottle mode annunciates N1 for climb and RETARD followed by
ARM for descent
• IAS/MACH display and airspeed cursors display target speed.
LVL CHG Mode
The LVL CHG mode coordinates pitch and thrust commands to make automatic
climbs and descents to preselected altitudes at selected airspeeds.
September 30, 2011
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