By Keith Laing - 03/24/11 08:45 PM EDT
Afterward, LaHood ordered that two air traffic controllers be on duty at all times at Reagan National.
The FAA, the National Transportation Safety Board and a House transportation committee are investigating the incident.
“In light of the recent incident at Reagan National Airport, I ask that you work immediately to increase the number of certified professional controllers at Newark Airport and better match its staffing levels with its air traffic volume,” Lautenberg wrote to LaHood.
"I have been fighting to properly staff air traffic controllers for more than 20 years," Lautenberg said. "It is unconscionable that we continue to under staff controllers that are critical to the safety of the flying public."