Go-Around Results in Hard Landing and Ground Impact (N737NT)

What happened

The pilot elected to initiate a go-around procedure when the aircraft was approximately four feet above ground level. During this maneuver, the flaps were retracted from 40 degrees to 20 degrees. To avoid rising terrain, the pilot executed a gentle right turn. Following the turn, the aircraft settled back onto the ground surface. The impact caused the aircraft to cross two ditches before finally coming to rest.

Findings

Environmental conditions played a significant role in the event. At the time of the incident, the density altitude was calculated to be approximately 7000 feet. This high density altitude reduces aircraft performance, particularly during critical phases like go-arounds and takeoffs.