NTSB Factual Report

The director of aviation safety for the operator reported that after landing, while parked at the ramp, the pilot in command exited the flight deck to open the cabin door. He added that the pilot "found the lead passenger standing in front of the main cabin door waiting to exit the aircraft." He further added that, "he [the pilot] was able to open the door from this position, but did not have room to exit the aircraft ahead of the passenger," and as the passenger started down the airplane's air stairs, her foot slipped, she landed on her knees, and caught her balance by grabbing onto the hand rails.

A subsequent medical examination revealed the passenger broke her ankle.

The director of aviation safety did not report that there were any preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation.

NTSB Probable Cause

The passenger’s inadvertent slip on the airplane's air stairs during deplaning, which resulted in a broken ankle.