737 MAX Flight Crew Operations Manual
Flight Management, Navigation -
Controls and Indicators
11.10.20
MN-FLT-OH-201
1B401, 1B402, 1B801 - 1B824
1
Active (ACT) Mode and Frequency Indicator
Indicates the active mode and frequency.
2
Transfer Switch
Push – standby mode and frequency moved to active indicator window; active
mode and frequency moved to standby indicator window.
3
Standby (STBY) Mode and Frequency Indicator
Indicates the standby mode and frequency.
4
TEST Switch
With a VOR frequency tuned and a course of 000 selected:
• shows VOR fail flag
• deviation bar biases out of view and then returns to centered position
• bearing pointer slews to 180 degrees
• DME displays:
•DME fail flag
•dashes
•normal DME distance.
With a ILS frequency tuned and a course within 90 degrees of airplane heading:
• pointers disappear and LOC and G/S flags appear momentarily
• pointers appear and display one dot up and one dot left
• pointers then display one dot low and one dot right
• pointers then return to normal display
1
2
3
4
5
6
7
8
9
0
CLR
N
A
V
ACT
STBY
TEST
MODE
AFT ELECTRONIC PANEL
1
2
3
4
5
6
March 1, 2021