737 MAX Flight Crew Operations Manual
Flight Management, Navigation -
FMC Cruise
11.42.38
MN-FLT-OH-201
Data is displayed in small font if that facility is being tuned but not received.
If the navaid has failed, FAIL will be displayed in small font.
If there is no corresponding identifier for the displayed frequency, then the
identifier field will be blank and only the frequency will be displayed.
On lines 1L or 1R, for VOR/ILS displays, the mode of tuning will be shown:
• M – Manual
• P – Procedural
On lines 2L – 2R through 4L – 4R, if no DME information is received then the
identifier and frequency field is blank.
2
IRS Status Display
Displays the IRS currently selected for use in navigation. “L” or “R” indicates left
or right IRS is being used in the FMC position calculation.
“2” indicates a dual system with both IRSs used in the FMC position calculation.
3
GPS Status Display
Displays the GPS currently selected for use in navigation. “L” or “R” indicates left
or right GPS is being used in the FMC position calculation.
“2” indicates dual system with both GPSs used in the FMC position calculation.
The display will be blank if GPS is inhibited for use in navigation.
March 1, 2021