MRJ Fleet Grounded After Inflight Incident

LOS ANGELES—The Mitsubishi Regional Jet (MRJ) test fleet has been temporarily grounded pending the outcome of investigations into the engine problem on one of the prototypes during a flight off the U.S. West Coast.

A replacement Pratt & Whitney PW1200G geared turbofan (GTF) engine has been fitted to an MRJ prototype which has been stranded at Portland, Oregon, since an Aug. 21 unexpected inflight shutdown. But the aircraft maker says it is too early to say when flight tests will …


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