Federal and airport authorities are investigating what caused a Las Vegas air traffic controller to become incapacitated and fall silent while working the night shift, stranding planes in the air and on the ground.
The incident occurred at busy McCarran International Airport in Las Vegas on shortly before midnight Wednesday. The female air traffic controller was working the night shift by herself at the time.
‘No safety events occurred during this incident,’ the Federal Aviation Administration said in a statement Friday about what officials said amounted to a 40-minute span during which the female controller slurred words and then apparently lost consciousness.
‘An air traffic controller at the Las Vegas tower became incapacitated while on duty,’ the agency said. It did not identify the controller or the cause of her incapacitation.
A Las Vegas air traffic controller appeared to slur her words and then pass out while working the night shift by herself at McCarran International Airport (shown) Wednesday
Airport director Rosemary Vassiliadis issued a statement saying that initial findings echoed the FAA assessment.
Five inbound aircraft remained airborne during the incident, and aircraft on the ground held positions or communicated between themselves to maintain safety while moving, the FAA said.
Air traffic recordings available on the internet show commercial airline pilots having trouble understanding the controller during radio communications about approaches to land, clearances to take off and directions for taxiing. Some begin talking between themselves about something being amiss.
During the 40-minute interlude, five planes were stranded in the air and planes on the ground at McCarren were forced to communicate between themselves to maintain their safety (file)
At one point, the controller sounds sleepy and apologizes over the radio, saying she is ‘choking a little bit.’ Minutes later, she misstates an aircraft’s call numbers. Finally, her microphone opens to the sound of coughing and grunting.
She does not respond to a pilot’s inquiry before the sound of a male voice is heard in the room asking if the woman is all right.
Officials said a male controller who had been on break was summoned to return to the tower. Paramedics responded.
The FAA said the woman was put on administrative leave, and the agency ordered two controllers to be in the tower during busy hours.
‘The FAA is deeply concerned by the incident, is thoroughly investigating what occurred, and is taking immediate steps to modify its overnight shift staffing policies,’ the agency statement said.
McCarran is among the 10 busiest airports in the U.S. in passenger volume. The unidentified controller worked for a little more than an hour before trouble began and communicated with pilots of 29 aircraft before she was replaced, the FAA said.
National Air Traffic Controllers Association chief Paul Rinaldi issued a statement praising the work of thousands of union members around the country and promising cooperation in the FAA investigation ‘so that all of the facts are known.’