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Calculating VDP

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Take the MDA and divide by 3 for a 3 degree glidepath.

For example, the MDA is 500 ft AGL. 500/3 = 1.66 miles. Drop the zero's accordingly to get a number that makes sense.
 
Here are a couple easy ways, bro.

Example: (486) feet above ground

1)Timing method==> 486 /10 = 48.6 sec

2)DME==> 486==4.8 x 3= 1.5 miles from RWY END

CYA
 
This is the easiest question EVER!. You set in the required altitude, Lower, OR Higher, into the Alt. selector. This is where the fun begins. You must have patience. Close your eyes and count out loud to 3 (not fast, just normal pace). Open your eyes, and look on the screen for a little rounded line (like a quarter of a circle, kind of looks like a "smile" or a "frown") in green or yellow, or whatever color shows up. If this "smile" is before your point requiring that altitude, you can smile my friend. You've done it!

Sorry too much starbucks this morning.
 
who cares? fly an FMS airplane with vnav capabilities, so you shoot rnav, gps , vor or ILS , all of wich have vertical guidance.
 
Take the MDA and divide by 3 for a 3 degree glidepath.

For example, the MDA is 500 ft AGL. 500/3 = 1.66 miles. Drop the zero's accordingly to get a number that makes sense.
Gus wears a hat.
Are you a "Maineiac" maybe A.B.
 
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