T-45C TS, ADV & IUT ENG-24
GINA Operating Characteristics
1.
Displays up to 200 coded waypoints from the
Mission Data Loader (MDL)
a.
Fifteen waypoints at a time
b.
14 pages
c.
Selected waypoint is highlighted
2.
NORM and APCH corridor monitor limit selection
a.
Used to internally monitor GPS accuracy using
internal GINA performance checks
Activates a CORRIDOR advisory only when
b.
GPS is boxed as the sole navigation source
INSTRUCTOR NOTES
The corridor safety alert is designed to support navigation
exclusively with GPS. Normally, the T-45C operates in HYBD
mode. In the future, the T-45C will likely be certified for flying
precision GPS approaches. Then, this corridor-warning feature
will become important. The normal (NORM) mode will be used
enroute, and the approach (APCH ) mode will be used during
GPS instrument approaches.
c.
NORM triggers a CORRIDOR advisory when
Estimated Horizontal Position Error (EHPE)
exceeds 333 meters for more than five (5)
seconds
d.
APCH triggers a CORRIDOR advisory when
Estimated Horizontal Position Error (EHPE)
exceeds 33 meters for more than five (5)
seconds and true airspeed is less than
300 knots
e.
When GPS is boxed, either NORM or APCH
are also boxed
f.
NORM is default with landing gear – UP
Original (9-98)
Page 24-40
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