T-45C TS, ADV & IUT ENG-24
GINA Operating Characteristics
H.
DGRO
1.
Main uses
a.
When having to take-off from an aircraft carrier
with a less-than 8 minute alignment
NOTE: Course-alignment complete: heading
and altitude are resolved. Will occur very
quickly. Later (5-8 minutes) position will
resolve. No velocity vector generated. Can
take-off before position is determined, and
resolve in flight.
b.
In-flight following loss of attitude information
(1) Establish straight and level and
unaccelerated flight
(2) Cycle GINA PWR on the BIT display page
(3) If attitude is not reestablished in 45-60
seconds, pilot may select DGRO
(4) GINA may auto-select DGRO
(5) May not be able to select DGRO,
depending upon INS failure
(6) If GPS is available GINA will use it
(7) Pilot cannot easily confirm he has lost all
GPS
2.
DGRO mode is a back-up to HYBD mode that
provides attitude and heading
3.
Do not have following items when operation in
DGRO mode
(1) Velocity vectors
(2) HYBD mode option legend
Original (9-98)
Page 24-32
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