Mooney M20J N202JB accident near Bowie, Maryland

Probable cause

A blockage of the pitot static system that preclude the airspeed indicator from displaying speeds greater than 40 mph, which led the pilot to abort the landing and overrun the runway.

NTSB analysis

The pilot performed a preflight inspection of the airplane and noted no anomalies. The pilot initiated the takeoff roll and noted that the airplane’s airspeed never rose above 40 mph. The airplane was about one-third to halfway down the 2,420-ft runway when the pilot elected to abort the takeoff then overran the departure end of the runway. The airplane broke through the airport perimeter fence and struck a car on a highway just off the airport property, which resulted in the left wing separating from the fuselage.

Postaccident examination of the airplane was unable to find any anomalies with the airspeed indicator, pitot tube, or pitot static system between the left-wing root and the airspeed indicator that would have precluded normal operation. Due to the wing’s impact damage, investigators were unable to functionally test the portion of the pitot system between the pitot tube and the left-wing root. It is possible that the pitot static system was blocked during the accident flight, preventing the airspeed indicator from displaying airspeeds above 40 mph and leading the pilot to decide to abort the takeoff, then the blockage became dislodged during the accident sequence.

Text from the NTSB. Open the NTSB docket for ERA19LA269 for the full record.