Note: (U10.2A) During FMC guided entrance to a hold, portions of the LNAV magenta holding pattern on the navigation display may not show. This may only occur when the holding pattern is within 5000 feet of the FMC computed MAX ALT, and after the UNABLE HOLD AIRSPACE scratch pad message shows. LNAV hold entry guidance will function normally.
Pushing the HOLD key when a holding pattern already exists in the route displays the hold page for the next hold. Holding parameters can be monitored and changed on this page. Performance predictions assume the hold will be in level flight. New holding patterns are added using the NEXT HOLD prompt. Exit from the holding pattern must be manually initiated.
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11.43.18 June 6, 2003
Flight Management, Navigation -FMC Descent and Approach 737 Operations Manual
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June 7, 2002 11.43.19
Flight Management, Navigation -FMC Descent and Approach 737 Operations Manual
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.
Turn Direction (TURN DIR)
Displays holding pattern turn direction.
Entry is propagated either automatically from the database, or from a manual
entry.
Valid entry is L or R. Manual entry has priority.
If no entry is made, the FMC assumes right (R) turns.
Inbound Course (INBD CRS)
Displays holding pattern inbound course.
Entry is propagated either automatically from the database, or from a manual
entry.
Valid entry is XXX. Manual entry has priority.
If no entry is made, the FMC assumes the course to be the same as the preceding
leg to the fix.
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Flight Management, Navigation -FMC Descent and Approach 737 Operations Manual
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.
Target Speed (TGT SPD)
Used for entry and/or display of the holding pattern target airspeed.
If no entry is made, the best speed value is displayed.
Manual entry has priority.
Target speed is propagated to the CLB, CRZ, or DES page three minutes prior to
reaching the fix.
Speed is highlighted in reverse video when the RTE HOLD is active.
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.
Flight Management, Navigation -FMC Descent and Approach 737 Operations Manual
Hold Available (HOLD AVAIL)
Displays available holding time in hours + minutes remaining if destination is to be reached with planned fuel reserves as entered on PERF INIT page.
BEST SPEED
Displays computed best holding speed based on present altitude and conditions. Note: May exceed maximum speed permitted by regulatory agency.
Active Route Hold Status
ACT indicates that the airplane has entered the holding pattern.
NEXT HOLD
Displayed when the route contains less than five holding patterns and there is no
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