T-45C TS, ADV & IUT ENG-24
GINA Operating Characteristics
Check GPS DATA page
(1) GPS TIME
(2) EHPE (Estimated Horizontal Position Error)
(3) EVPE (Estimated Vertical Position Error)
The indicated GPS TIME should equate to current ZULU time.
With normal flight dynamics, EHPE can be expected to fluctuate
between 33 to 100 meters; EVPE between 50 to 100 meters.
During and shortly after aggressive maneuvering both EHPE
and EVPE may fluctuate up to 1000 meters.
Check for erroneous or missing display
symbology: HUD and MFDs
Cross-check standby instruments with MFD
Failure of internal GPS-INS comparison test
Sg 6, fr 8
Fig 18: Got a
Figure 18: GOT A PROBLEM