T-45C TS, ADV & IUT ENG-24
GINA Operating Characteristics
(3) INS mode option legend
4.
Heading in DGRO
a.
Pilot can enter a magnetic heading using the
DEP, unless heading is already resolved by
GINA
b.
Heading may noticeably drift if neither GPS or
pilot-entered position is available
5.
Once DGRO mode is entered, can only exit
following three ways
a.
Select RST on ACFT DATA page
b.
Cycle GINA PWR on BIT page
c.
Initiate an IBIT test (on ground)
6.
GINA defaults to DGRO mode during initial
alignment under following conditions
a.
Parking brake not set
b.
GPS (4-satellite lock-on) not available within
65 seconds
NOTE: When GPS becomes available, GINA
will automatically continue alignment using GPS
I.
Alignment (land)
1.
GINA determines heading using the ring laser
assembly; GPS not needed
2.
Must have weight-on-wheels
NOTE: If parking brake is not set, GINA will default
to the DGRO mode, when GPS is not available.
3.
Must have GPS tracking four (4) satellites for a full
alignment to begin, or a manual present position
initialization using WYPT-0
Original (9-98)
Page 24-33
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