The "V" crossunder consists of two straight lines from the parade position on one side of the leader, below
and behind into column position, then into parade position on the other side. The student must control
relative motion in three directions at the same time (Figure 23). This maneuver involves controlling the
stepdown with nose attitude, controlling the crossing rate with heading differential, and controlling nose-to-
tail separation with power.
The crossunder begins when the lead gives the crossunder signal and the wingman acknowledges.
Fly the aircraft on the down, aft, and into vector to arrive at the column position. Upon passing the
lead's centerline with 15 ft of stepdown and 10 ft of nose-to-tail, the wingman starts climbing to reach
parade position on the other side of the lead.