787 Flight Crew Operations Manual
DO NOT USE FOR FLIGHT
Supplementary Procedures Chapter SP
Flight Management, Navigation Section 11
Copyright © The Boeing Company. See title page for details.
D615Z003-TBC SP.11.1
SP.11 Supplementary Procedures-Flight Management, Navigation
Supplementary Procedures
SP.11 Flight Manage ment, Navigatio nFlight Management, Navigation
Alignment/Position Update
If a position update is desired during an automatic realignment (on
ground only):
CDU – SET
When dash prompts appear on the SET INERTIAL POS line of
the POS INIT page, enter the most accurate position.
If a manual alignment is desired (on ground only):
IRS selectors – OFF 30 seconds, then ON
Wait an additional 30 seconds.
CDU – SET
Enter the most accurate position on the SET INERTIAL POS
line of the POS INIT page if the following is displayed on the
SET INERTIAL POS line:
• a latitude/longitude position
Alignment requires from six to fifteen minutes depending on
latitude (six minutes at the equator, ten minutes average).
August 14, 2009
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