Water leaking from two lavatories on a Boeing 767 froze on aileron components and left the flight crew with limited ability to turn the control wheels during a July 7, 2022, trans-Atlantic flight, according to a report by the U.S. National Transportation Safety Board (NTSB).
There were no injuries among the 233 passengers and crew and no lasting damage to the airplane, the NTSB said in its final report on the incident, which occurred during a flight from Václav Havel Prague Airport in the Czech Republic to Kennedy International Airport in New York.
The NTSB cited as the probable cause of the incident “the failure of maintenance personnel to close the drain mast heater circuit breakers, which resulted in the formation of ice in the forward drain mast, an improper flow of wastewater into the main landing gear wheel well and the formation of ice on one or more aileron system components.”
Several hours after the Delta Air Lines flight left Prague, flight attend…
