IFR Corridor

Question 1

DZ Entry Point

Answer 1

fixed point where formation may safely begin descent from IFR en route altitude to IMC drop altitude
will not begin descent until last aircraft is at or past this

Question 2

IFR Drop Corridor

Answer 2

aircraft may operate below IFR en route altitude
IP is max of 40 miles from the EP
plan segmented altitudes not lower than 500’ above highest obstruction to flight within 3NMs of centerline
drops conducted through or from IMC only authorized from within/above active restricted area or MOA
don’t descend unless all aircraft are inside entry point, on course

Question 3

DZ exit point/egress point

Answer 3

fixed point on DZ escape flight path centerline where each aircraft will be at minimum IFR en route altitude
calculate exit point based upon 3 engine performance at airdrop gross weight
minimum of 4 NMs track distance from TE of DZ

Question 4

LDP

Answer 4

latest point in corridor formation lead may begin descent to IMC drop altitude and be assured of terrain clearance for entire formation
latest point that ensures all aircraft in formation are stabilized on altitude and airspeed

Question 5

EDP

Answer 5

earliest point in corridor where the formation lead may descend the entire formation to IMC drop altitude and be assured of terrain clearance for the entire formation
computed by subtracting formation length from computed DZ entry point

Question 6

IMC stabilization point

Answer 6

point after DZ entry point where lead aircraft will plan to be stabilized at IMC drop altitude and airspeed
normally 6 NM from PI