In early August 1991, Boeing issued an alert to airlines stating that over 1,600 late model 737s, 747s, 757s, and 767s had thrust reverser systems similar to that of OE-LAV. Two months later, customers were asked to replace potentially faulty valves in the thrust reverser systems that could cause reversers to deploy in flight.Lane, Polly and Acohido, Byron. "Boeing Tells 757 Owners To Replace Part – Faulty Thrust-Reverser Valve Blamed In 767 Accident That Killed 223". The Seattle Times. Monday, 9 September 1991. Retrieved on 15 February 2013.
