The National Traffic Safety Board is conducting another investigation on Boeing's 737 MAX planes, this time for an incident at Newark International Airport.

In a newly released report, the NTSB says pilots experienced “stuck” rudder pedals during landing rollout while arriving at Newark Airport on Feb. 6.

The rudder controls an airplane's direction and ability to turn left or right.

Nobody on the flight was injured, and the plane was able to return to the gate.

The malfunction happened again during a test flight three days later.