Boeing 737-800 - IRS Instrument Transfer Switch Schematic; Radio Navigation Systems; Automatic Direction Finding (ADF)

737 Flight Crew Operations Manual
Flight Management, Navigation -
Navigation Systems Description
Boeing Proprietary. Copyright © Boeing. May be subject to export restrictions under EAR. See title page for details.
D6-27370-866-EGP 11.20.7
IRS Instrument Transfer Switch Schematic
Radio Navigation Systems
Automatic Direction Finding (ADF)
An automatic direction finding (ADF) system enables automatic determination of
magnetic and relative bearings to selected facilities.
Two ADF receivers are installed. The ADF bearing signals are sent to the pointers
on the DUs and the standby radio magnetic indicator. The audio is heard by using
the ADF receiver control on the audio selector panel.
NAV
ALIGN
OFF
ATT
DISPLAY
OUTBOARD
UNIT
NAV
ALIGN
OFF
ATT
R
L IRS
AUTOTHROTTLE
AUTOTHROTTLE
RIGHT IRSs
THE LEFT AND
CAPABILITY BETWEEN
AUTOMATIC SWITCHING
COMPUTER HAS
COMPUTER
RADAR
WEATHER
DISPLAY
INBOARD
DISPLAY
OUTBOARD
NO. 1 DEU
ON RON L
BOTHBOTH
NORMAL
IRS
NORMAL
ON R
BOTH
NO. 2 DEU
UNIT UNIT
ON L
BOTH
DISPLAY
INBOARD
UNIT
B
AFDS FCC
EACH FLIGHT CONTROL
POSITION
IRS TRANSFER SWITCH
LOGIC DEPENDENT UPON
INTERNAL SWITCHING
COMPUTER HAS
2 2
1
1
2
A
AFDS FCC
AUTO-
PILOT
AUTO-
PILOT
AUTO-
PILOT
AUTO-
PILOT
Pitch
Heading
Pitch
Heading
RollRoll
FLIGHT
DIRECTOR
FLIGHT
DIRECTOR
All
All
September 26, 2013