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4 votes
Accepted

Why is my WAAS equipped aircraft telling me to descend sooner than the FAF (KDVT 25L LPV)

The G1000 is correct. Just like you would on an ILS, once you have intercepted the glidepath you should follow it down. The altitude restriction at FEGEV (the final approach fix) and the stepdown ...
Chris's user avatar
  • 16.8k
3 votes

Why do all trend vectors in the G1000 on airplanes indicate the status 6 seconds later? Why 6? Why not 5 or 10?

It's a graphical space reason. Vertical Speed The altitude tape shows the current altitude approx. $\pm 300$ ft. Therefore, the maximum trend you can show is $\pm 300$ ft in $x$ seconds, thus $300/x$ ...
ocirocir's user avatar
  • 2,683

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