The National Air Traffic Controllers Association calls suggestions that an air traffic controller may have had anything to do with the midair collision over the Hudson River off New York City last weekend "absurd" and "insulting."
Two air traffic control employees were placed on administrative leave by the FAA after investigators discovered that the controller handling the single engine plane was on the phone when the accident took place.
"We learned that the controller handling the Piper flight was involved in apparently inappropriate conversations on the telephone at the time of the accident," the FAA said in a prepared statement Thursday night. "We also learned that the supervisor was not present in the building as required."
The FAA says they have no reason to believe the controller had anything to do with the accident, and said the unidentified controller had already handed off control of the plane to Newark airport when the accident happened.
But that did little to calm union officials.
"For the FAA to sit there and allude or make accusations that the controller had anything to do with this accident is absolutely absurd and very insulting," said Barrett Burns, from the National Air Traffic Controllers Association.
ABC News aviation consultant John Nance said on "Good Morning America" that the FAA has the "right and responsibility to discipline their people," but said that "it is as if they were trying to find somebody to blame."
The small Piper plane collided with a tour helicopter over the river between New York and New Jersey in an area not under the direction of air traffic controllers. However, air traffic controllers were in contact with the plane before the collision that killed all three people on the plane and all six aboard the helicopter.
The New York Daily News reported the "inappropriate conversations" were by a controller at Teterboro Airport, where the plane took off, who was on the phone with his girlfriend as he guided the plane toward the Hudson corridor on another channel.
The controller had cleared the single engine plane for takeoff before making the call, and was still on the phone when he handed off control of the plane to nearby Newark airport, which monitors low flying traffic on the Hudson.
National Transportation Safety Board and FAA investigators learned of the telephone conversation earlier this week while examining recordings of telephone calls on a landline phone in the tower that controllers use to communicate with other parts of the Teterboro Airport. The controller and supervisor were removed from duty immediately and the FAA has begun disciplinary proceedings.
Neither the controller nor his supervisor were identified by the FAA.
Air traffic controllers are expected to be alert at all times and are given frequent breaks, at least 15 minutes every two hours. The FAA said in its statement that while they have no reason to believe that the actions of the employees contributed to the accident, "this kind of conduct is unacceptable."
The plane was found Monday, 60 feet underwater, and raised later. The helicopter was recovered in 30 feet of water Sunday. Wreckage from the crash will be transported to Delaware today for further investigation.