VDP Formula (Visual Descent Point)
(MDA in AGL – TCH) / 330′ = VDP from threshold
MDA – minimum decision altitude
AGL – above ground level
TCH – threshold clearance height
Example: Odgen VOR is (452 – 50) / 330 = 1.3 nm from threshold (NOT at RUYOS)
Gavin’s Descent Rule of Thumb
Begin your decent 3nm out for every 1,000′ of descent you need.
Descent at a rate of 5 times your ground speed.