737 MAX Flight Crew Operations Manual
Flight Management, Navigation -
Controls and Indicators
MN-FLT-OH-201
11.10.17
IRS Transfer Switch
1
Inertial Reference System (IRS) Transfer Switch
BOTH ON L – switches the flight instruments attitude and heading source to left
IRS.
NORMAL – flight instruments attitude and heading source is from default IRS.
BOTH ON R – switches the flight instruments attitude and heading source to right
IRS.
Radio Navigation Systems
Automatic Direction Finding (ADF) Control
1B785, 1B786, 1J585 - 1J594
1
Frequency Indicator
Shows the frequency selected with the related frequency selector.
Shows if the system is in the ADF or antenna (ANT) mode.
IRS
NORMAL
BOTH
BOTH
ON R
ON L
FORWARD OVERHEAD PANEL
1
ADF
ANT
1
2
ADF
ANT
OFF
TONE
ADF
ANT
OFF
ADF 1
ADF 2
TEST
TEST
INOP
AFT ELECTRONIC PANEL
1
2
3
4
March 1, 2021