Pratt & Whitney has completed a design repair for the Pure Power 1500G used on the Bombardier CSeries Flight Test Vehicles (FTVs) and is re-delivering the engines, Leeham News has learned.
Flight tests are expected to resume in September, likely the first half, according to sources close to the situation. BBD will only say flight tests will resume “in the coming weeks.”
A PW spokesman was equally ambiguous. “We continue to work closely with Bombardier to return the CSeries to flight testing,” the spokesman wrote in an email. “I would also note that the fundamental architecture of the Geared Turbofan engine remains sound.”
The FTVs have been grounded since May 29, when a PW engine on FTV 1 suffered a failure in an oil seal, causing a fire and spewing engine parts into the composite wing of the airplane. The wing is undergoing repairs.
Details of the fix for the FTV engines have not been revealed. But one person familiar with the situation told us that the FTV engine repairs enable the test fleet to return to the air, and that the redesign of the affected area of the engine will be incorporated into a production redesign before the CSeries enters service. Bombardier continues to maintain that the CS100, the first of the two-member family scheduled to enter service, will do so in the second half of 2015. Some aerospace analysts believe BBD will be hard-pressed to meet this schedule, and EIS will slip into early 2016. The larger CS300 was scheduled to enter service six months after the CS100, and it’s unclear if this EIS will continue to have a six month gap.
Bombardier is preparing to resume the flight test program with the four FTVs that have been completed; three more are in assembly.
The Pure Power 1100G for the Airbus A320neo, scheduled to enter service in October next year, will incorporate the production redesign, says the source familiar with the situation. No delay is expected in this program.