Beech 65 N62069 accident near Colby, Kansas

Probable cause

The pilot’s failure to properly secure the crew hatch door before takeoff, which resulted in his distraction and his failure to maintain airplane control and airspeed.

NTSB analysis

Shortly after takeoff, the pilot noticed that the crew hatch door, located next to the left front seat, had unexpectedly opened. The pilot attempted to close the door without success. He indicated that, while trying to close the door, he "wasn't able to fully control the airplane normally (mainly [in] heading and pitch)," so he initiated a precautionary landing back to the departure airport. While maneuvering at a low altitude to stay in visual flight rules conditions (overcast ceiling at 300 ft), the airplane's airspeed decreased, the wing tips were dipping back and forth, and the airplane exhibited signs of nearing its critical angle of attack. The pilot retracted the landing gear and applied full engine power to try to gain airspeed. The pilot was unable to gain airspeed, and the airplane was losing altitude. Before impact, the pilot kept the wings level and the nose in a slight pitch-up attitude. The airplane then impacted the snow-covered terrain with the landing gear retracted, which resulted in substantial damage to the left wing and aileron. Postaccident examination of the airplane revealed no preimpact malfunctions with the crew hatch door; thus, it is likely the door had not been properly secured before takeoff.

Text from the NTSB. Open the NTSB docket for CEN19LA086 for the full record.