Pratt Confirms Oil Leak Caused CSeries Engine Failure
According to officials from Pratt & Whitney, it was an issue with one of the oil seals that caused the fire in its PW1500G
According to officials from Pratt & Whitney, it was an issue with one of the oil seals that caused the fire in its PW1500G

Pratt & Whitney officials on Sunday afternoon identified the source of the failure of one of the PW1500Gs on the first Bombardier CSeries flight test aircraft as a “seal issue” in the oil system, not the low-pressure turbine, as was previously indicated by Bombardier. However, the officials refused to specify precisely where the oil leak originated or offer detailed information about the expected timing of its so-called fix.