route modification in progress.
Push – displays (RTE LEGS) HOLD AT page and prompts for new holding fix
entry.
EXIT HOLD
Displayed on the holding page when in the holding pattern.
Used when preparing to depart holding pattern.
Push – changes prompt to EXIT ARMED and illuminates execute key.
The EXIT prompt is not available until the next crossing of the holding fix, if the
holding pattern is modified while being flown.
EXIT ARMED
Displayed on the holding page when in the holding pattern and after line selection of EXIT HOLD prompt.
Execution activates LNAV flight back to the holding fix via a shortened holding pattern, departure from holding pattern, and continued flight along the active route. ACT RTE LEGS page 1/XX appears after holding exited.
Highlighted in reverse video after execution.
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HOLD AT
When the HOLD function key is pushed and no holding pattern exists in the route, the LEGS page shows prompts to enter the holding fix. Enter the holding fix to show the RTE HOLD page.
Displays a prompt to enter the holding fix, a route waypoint, or present position. A waypoint is entered as the holding fix.
HOLD AT Present Position (PPOS)
Selects the airplane present position as the holding fix.
Modified Route Hold Status
MOD indicates that the holding fix has not been executed.
Execution changes the page title to RTE HOLD (ACT RTE HOLD if holding at PPOS).
FIX
Displays waypoint identifier of the holding fix.
Entry is propagated either automatically from the database, or from a manual entry
on the HOLD AT page.
If PPOS was selected on the HOLD AT page, then the FMC assigns PPOS as the
fix identifier.
Quadrant/Radial (QUAD/RADIAL)
Displays holding pattern quadrant and radial.
Entry is propagated either automatically from the database, or from a manual entry
on the HOLD AT page.
Valid entry is XXX (radial) or XX/XXX (quadrant/radial). Valid quadrant entry is
N, NE, E, SE, S, SW, W, NW.
Quadrant shall be determined by the resulting inbound course.
Inbound Course/Direction (INBD CRS/DIR)
Displays holding inbound course and turn direction.
Entry is propagated either automatically from the database, or from a manual entry
on the HOLD AT page.
Valid entry is XXX (inbound course), XXX/X (inbound course/turn direction), /X
or X (turn direction).
Automatically changes QUAD/RADIAL to agree.
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737 Operations Manual
For a flight crew–entered holding pattern, the inbound course is initially the same
as the preceding leg to the fix.
For a flight crew–entered holding pattern, if no entry is made, the FMC assumes
right turns.
LEG TIME
Displays holding pattern leg time.
Valid entry is X.X. Manual entry has priority.
If no entry is made, the FMC assumes the standard times of 1.0 minute at or below
14,000 feet, and 1.5 minutes above 14,000 feet.
If a LEG DIST is manually entered, then dashes will be displayed.
Leg Distance (LEG DIST)
Dash prompts are normally displayed.
Entry may be propagated either automatically from the database, or made by
manual entry.
Manual entry has priority.
Overrides LEG TIME.
ERASE
Displayed only while modification is in progress.
Push – deletes modification and returns to ACT RTE HOLD page, if one exists;
otherwise returns to the ACT RTE LEGS page.
Speed/Target Altitude (SPD/TGT ALT)
Displays current speed and altitude (small font).
Speed or altitude constraint may be entered. Manual entries are in large font and
propagate to LEGS page.
Fix Estimated Time of Arrival (FIX ETA)
Displays computed time for next passage over holding fix.
Expect Further Clearance Time (EFC TIME)
Entry of the EFC time will help optimize FMC performance computations.
Computation of destination fuel assumes that departure from the holding fix will occur at this time.
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