Position update eradication:
This procedure is not considered
common. Its use is limited to those
times where an operational error has
resulted in an erroneous position fix.
Data selector DSRTK/STS.
appears in right data display.
Press. Observe INSERT/ADVANCE
pushbutton annunciator extinguishes.
Within 30 seconds, data displays return
to normal with "O" (normal inertial
mode) in last digit of right display. AI
will be set to approximately three times
the number of hours in NAV.
Flight course changes.
Manual flight plan change insertion:
Select new FROM and TO waypoints
by pressing corresponding keys.
Observe new waypoint numbers appear
in TO-FROM data displays as keys are
Selecting zero as FROM waypoint will
cause desired track to be defined by
computed present position (inertial
present position plus fixes) and TO
Press. Observe WYPT CHG and
Waypoint zero always contains ramp
coordinates if no manual flight plan
changes are made. When a manual
flight plan change is made, present
position at instant of insertion is
stored in waypoint zero.
After landing procedures:
If INS will be unattended for an
extended period, it should be shut
Do not leave INS operating unless
aircraft or ground power and cooling
air are available to system.
The INS may be downmoded to STBY
or ALIGN mode, or operated in the
navigation mode after landing. The
determining factor in choosing course
of action is expected length of time
before the next takeoff.
Do not shut down the INS until the
aircraft is parked. Do not tow or taxi
the aircraft until the INS has been
shut down for at least 2 minutes. This
precaution is to prevent damage to the
Do not tow or taxi aircraft during INS
Action to be taken during a transient
stop depends upon time available and
on availability of accurate parking
coordinates (latitude and longitude).
Change 2 3-70