737 MAX Flight Crew Operations Manual
Flight Management, Navigation -
ATC Data Link
MN-FLT-OH-201
11.34.55
2
Conditional Clearances
Conditional clearances are uplinks that contain a conditional location, altitude, or
time for execution of a clearance/instruction. The system is able to handle up to 3
accepted conditional clearances.
If an accepted conditional clearance is executed early, the FMC displays the
following:
• “CLEARANCE COND NOT MET” scratchpad message.
• “CONDITION NOT MET” displayed in the 2L/2R line title.
The annunciation of early execution of a conditional clearance is triggered by:
• If the MCP altitude changes more than +/- 150 feet from the current
altitude prior to satisfying the condition (time or position), then a
conditional altitude clearance is considered to have been executed early.
• If an offset is executed including deleting an existing offset before the
specified [time], then the conditional offset clearance is considered to
have been executed early.
• If the direct waypoint becomes the active waypoint prior to satisfying
the condition (time or altitude), then a conditional direct clearance is
considered to have been executed early.
Note:
The annunciation of early execution of a conditional clearance is not
provided for a conditional heading clearance.
When the airplane satisfies the condition associated with a conditional clearance,
a “clearance condition met” message is displayed as follows:
• “CLEARANCE COND MET” scratchpad message.
• “CONDITION MET” displayed in the 2L/2R line title.
The annunciation of execution of a conditional clearance is triggered by:
• the condition is considered satisfied when the current time reaches the
specified time.
• the condition is considered satisfied when the specified waypoint is
sequenced in the FMS active route.
• the condition is considered satisfied when the airplane reaches an
altitude /- 150 ft of the specified altitude.
• The conditional clearance is manually deleted by selection of DELETE
to 1L, 2L or 3L on the CONDITIONAL CLEARANCE page.
3
Message Text
Lines 2 to 5 of XXXXZ ATC uplink page 1/X display text of uplinked ATC
message.
March 1, 2021
