737 MAX Flight Crew Operations Manual
Flight Management, Navigation -
FMC Messages
11.60.34
MN-FLT-OH-201
ALERTING MESSAGE
CAUSE
CORRECTIVE ACTION
DATALINK LOST
Datalink connectivity
has been lost
Notify ATC of the loss of
FANS datalink
connectivity.
INVALID ATC (ROUTE
or ROUTE X) UPLINK
ATC uplink received by
FMC contains errors.
Clear message.
INVALID ATC UPLINK ATC uplink received by
FMC contains errors.
Clear message.
MESSAGE LIMIT
EXCEEDED
Crew attempts to select
more than five message
elements for inclusion in
downlink message.
Clear message.
PARTIAL ATC ROUTE
X UPLINK
Receipt of an ATC
ACARS uplink message
containing route data
which passed syntax
error checks, but
contained errors in the
data, and part of the
active RTE 1 or 2 flight
plan data has been
loaded.
Review the route uplink,
and execute or ERASE.
PARTIAL
CLEARANCE
LOADED
FMC able to load only a
portion of data.
Clear message and reject
uplinked clearance.
RE–LOGON TO ATC
COMM
No response to logon
message after 10
minutes.
Clear message and
re-send logon message.
RESPOND TO ATC
UPLINKS
ATC uplink pending
storage full.
Clear message and
respond to open uplinks.
UNABLE TO LOAD
CLEARANCE
FMC unable to load any
data from uplink.
Clear message and reject
uplinked clearance.
UNABLE TO SEND
MSG
Manual initiation of
downlink failed.
Clear message.
March 1, 2021
