Delta Air Lines is giving its senior instructor pilots a one-week all-attitude flight-training immersion to help the carrier develop new full-stall and upset-recovery training programs for line pilots. The upset-prevention and recovery-training (UPRT) course includes ground, in-aircraft and full-motion simulator instruction aimed at helping the airline better prepare its line pilots to avoid loss-of-control (LOC) accidents, which are often preceded by stalls or upsets.