Posted in NEWS Boeing 777 grounding explained visually: Pratt and Whitney engine failure involved in two incidents on same day February 23, 2021 Two Boeing planes dropped engine parts on Saturday. Same engine manufacturer as past events. NTSB eyes fan blades cited in ‘scary’ 2018 United flight. http://rssfeeds.usatoday.com/~/644955226/0/usatoday-newstopstories~Boeing-grounding-explained-visually-Pratt-and-Whitney-engine-failure-involved-in-two-incidents-on-same-day/