Incident Overview
TWA flight 150 had just completed its landing and was taxiing to the gate when it struck a sweeper truck. The truck was stationary on taxiway 'A', positioned across from taxiway 'T', and its operator had exited the vehicle to pick up debris.
Crew Actions
The flight crew observed the truck and the operator on the taxiway. The first officer assessed the situation and concluded that the sweeper was located well clear of the aircraft's path. Despite this assessment, the aircraft made contact with the sweeper truck. Believing they had hit a pothole, the crew did not report the occurrence to Air Traffic Control (ATC).
Subsequent Notification
Another TWA flight operating in the vicinity noticed the sweeper operator on the ground and notified ATC of the situation. The source does not specify any further actions taken by ATC or the outcome for the sweeper operator.