Boeing 737-800 - Lateral Navigation

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.
4.10.10 D6-27370-866-EGP
Lateral Navigation
1 COURSE Display
Displays course set by course selector.
Note: Different courses and frequencies on two VHF NAV receivers can cause
disagreement between Captain and FO F/D displays and affect A/P
operation.
2 Heading Selector
Rotate –
• sets heading in HEADING display
• positions selected heading bugs on the DUs.
3 HEADING Display
Displays selected heading.
4 LNAV Switch
Push –
• commands AFDS roll to intercept and track the active FMC route
• annunciates LNAV as roll mode and illuminates LNAV switch light.
LNAV Mode
In LNAV mode, the FMC controls AFDS roll to intercept and track active FMC
route. Active route is entered and modified through FMC CDUs and can include
SIDs, STARs, and instrument approaches.
OFF
OFF
A/T
ARM
F/D
ON
N1 SPEED LVLCHG HDGSEL APP
VORLOC
COURSE IAS/MACH
V NAV
10
C/O
HEADING
L NAV
MA
30
SPD
INTV
GLARESHIELD
1 2 5
6 87 9
3 4
September 30, 2011