Accelerated Free-fall(AFF) The AFF jump involves two instructors securely holding on to you while you leave the aircraft together at 13,000 feet. The instructors hold on through the entire free-fall of 40-50 seconds, supervising the student as he or she performs what was practiced on the ground. The student opens his own parachute at 5,000 … Continue reading Accelerated Free-fall(AFF)