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
route modification in progress.
Push – displays next holding pattern if another holding pattern is entered in the
route; displays (RTE LEGS) HOLD AT page if there is no other holding pattern
in the route.
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.
RTE LEGS HOLD AT (Fix in Route)
Used to enter proposed fix for racetrack holding pattern at either present position or any waypoint.
A maximum of five holding patterns may exist at one time.
Copyright . The Boeing Company. See title page for details.
11.43.26 June 7, 2002
Flight Management, Navigation -FMC Descent and Approach 737 Operations Manual
With U7.5 FMC and on, two holding patterns may exist at the same waypoint if one is in the route and the other is in the missed approach.
Data Lines
Display same data as the corresponding RTE LEGS page.
HOLD AT
Used to enter any waypoint identifier, which then defines a holding fix.
Copyright . The Boeing Company. See title page for details.
June 7, 2002 11.43.27
Flight Management, Navigation -FMC Descent and Approach
737 Operations Manual
Entry may be via keyboard, or by transfer of any downpath waypoint which is in
the existing route (the example depicts ELN line selected into the scratch pad). Following line selection of the desired waypoint into the box prompts, the MOD RTE HOLD page appears and the execute key illuminates.
Present Position (PPOS)
Push – selects holding fix at present position. The MOD RTE HOLD page appears and the execute key illuminates (“present” is at the time of execution of the MOD RTE HOLD page).
Displayed only in flight.
Default parameters are a standard holding pattern on the inbound leg.
Hold at Waypoints (HOLD AT)
A holding fix creates a new HOLD AT waypoint following the leg to that
waypoint.
Displayed on the RTE LEGS page in the proper route sequence after executing the
related MOD RTE HOLD page.
Copyright . The Boeing Company. See title page for details.
11.43.28 June 7, 2002
Flight Management, Navigation -FMC Descent and Approach 737 Operations Manual
RTE LEGS HOLD AT (Fix not in Route)
Hold at Waypoint (HOLD AT XXXX)
Displayed in the scratch pad whenever the entry in the HOLD AT line is not a
waypoint in the existing route (the example above depicts entry of PLUSS). Route position of the holding fix is defined by line selecting to the desired LEGS page sequence.
Following line selection to the desired LEGS page sequence, the MOD RTE HOLD page appears and the execute key illuminates.
Flight Management, Navigation -FMC Descent and Approach 737 Operations Manual
Hold at Waypoints (HOLD AT)
A holding fix creates a new HOLD AT waypoint following the leg to that
waypoint.
Displayed on the RTE LEGS page in the proper route sequence after executing the
related MOD RTE HOLD page.
ROUTE DISCONTINUITY
The entered route must always form a continuous path of linked legs.
The example depicts a HOLD AT entry where the entry was not a downpath
waypoint.
The FMC computes a direct course to the off–route holding fix.
The HOLD AT waypoint becomes a termination identifier which is not part of the
existing route. The resulting route discontinuity is identified by box prompts,
requiring entries to define the route after PLUSS.
Copyright . The Boeing Company. See title page for details.
11.43.30 June 8, 2001
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本文链接地址：737-300机组操作手册Flight Crew Operations Manual FCOM 3(82)
