Expert: David Bidwell - 6/28/2004

Question
Hi,
I WAS WONDERING ABOUT VISUAL DESCENT POINTS, WHAT IT IS EXACTLY AND WHAT THE FORMULA FOR FIGURING THE VDP IS?

Answer
Hi Mike,
The VDP is a defined point on the final approach course of a nonprecision straight in approach procedure from which a normal descent from the MDA to the runway touchdown point may be commenced, provided visual reference required by FAR 91.175(c)(3) is established.  The VDP is normally identified by DME on VOR and LOC procedures and by along track distance to the next waypoint for RNAV procedures. You really don't need to worry about a formula because the VDP is identified on the profile view of the approach chart by the symbol V.

VDPs are intended to provide additional guidance where they are implemented.  No special technique is required to fly a procedure with a VDP.  The pilot should not descend the MDA prior to reaching the VDP and acquiring the necessary visual reference.

Pilots not equipped to receive the VDP should fly the approach procedure as though no VDP had been provided.

I hope this helps you Mike.  If you have any more questions or need further clarification you know where to find me.
Dave