Limitation of Operations of Boeing 777 Aeroplanes Following Serious Incident of Engine Failure on 20 February 2021

This SD is made in the interests of continued safety of operation and to protect the public following a serious incident on 20 February 2021 involving a United Airlines Boeing 777 aeroplane, Flight 328, where the right-hand engine failed in flight following a suspected fan blade failure. A similar engine failure occurred to a Japanese Airlines Ltd Boeing 777 on 4 December 2020.

This SD has been revoked as of 28 April 2021 as its purpose will be achieved through compliance with the mandatory requirements of associated FAA Airworthiness Directives before further operations are conducted with these aeroplanes.