An emergency descent is a maneuver for descending as rapidly as possible to a lower altitude or to the ground for an emergency landing. The need for this maneuver may result from an uncontrollable fire, a sudden loss of cabin pressurization, or any other situation demanding an immediate and rapid descent. The objective is to descend the airplane as soon and as rapidly as possible, within the structural limitations of the airplane.
AFH Ch-17 (06) Emergency Descents
Cessna SOPM 2-56 Emergency Descent
Private Pilot ACS Page 50 Task A. Emergency Descent