WASHINGTON (AP) – Federal safety officials say a regional airliner and a smaller plane came within 10 feet of colliding on an airport runway in Charlotte, N.C.

The incident occurred Friday morning at Charlotte Douglas International Airport but wasn’t disclosed by the National Transportation Safety Board until Tuesday.

The board said the PSA Airlines jet with 43 passengers and three crew members was rolling down the runway for takeoff when a smaller turboprop plane pulled onto the same runway.

A warning system alerted air traffic controllers to the impending collision. They canceled the jet’s takeoff clearance. The airliner came to an abrupt stop within 10 feet of the smaller plane.