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GNC 420(A) Pilot’s Guide and Reference
APPENDIX A
DATA CARD USE
A-2
Removing the NavData or Terrain Data Card
(Figure A-2):
1) Gently press on the tab—using a slight upward
motion—at the front center of the data card.
This partially deploys the swing arm handle.
2) Rotate the swing arm handle upward (and
outward) until it locks into place, perpendicular
to the face of the GNC 420 unit.
3) Grasp the top and bottom surfaces of the
swing arm handle between your thumb and
forefinger, and pull directly away from the
face of the GNC 420 unit to remove the data
card.
190-00140-20 Rev. K