MD-11 Flight Crew Operations Manual
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FMS -
Controls and Displays
FMS.30.124
Parallel Offset NAV
The parallel offset function enables the aircraft to fly parallel to the original flight
plan, laterally offset by a pilot entered distance. This F-PLN alteration can be done
by performing a LAT REV at the FROM waypoint and entering the offset distance
measured in NMs into the OFFSET brackets of line 5L of the LAT REV page.
Refer to FCOM Operating Procedures for detailed procedures.
The parallel offset entry accepted by the FMC becomes active immediately after
the offset distance is entered and the aircraft turns to intercept the parallel course
using up to a 45 degree intercept.
If the FMC cannot accept the offset, an ENTRY OUT OF RANGE message will
be displayed. The parallel offset is cancelled when the active leg is changed to a
lateral revision, clearing the offset data, or the next leg is not applicable for an
offset. In the latter case, the FMC automatically initiates cancellation of the offset
and displays CANCELLING OFFSET in the SP. Cancellation will occur when the
along track distance to go referenced to the original path is 1.3 NM more than the
calculated return path distance. Return to the F-PLN is accomplished again with
up to a 45 degree intercept. Entry to a holding pattern is one example where the
offset is automatically cancelled.
NOTE: The offset feature is not available during Polar Transition (above
85 degrees latitude).
FL330
GOLKE
RON
D0990
REMIR
MONCE
OFST
40
RL
LB1-3-0137
October 02, 2006
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