Engines
NTSB Recommends Urgent PW2037 Inspections
Operators of Pratt & Whitney PW2037 engines will have to increase inspection of second-stage high-pressure turbine (HPT) hubs if the FAA accepts two NTSB r

Operators of Pratt & Whitney PW2037 engines will have to increase inspection of second-stage high-pressure turbine (HPT) hubs if the FAA accepts two NTSB recommendations made Thursday. The safety calls follow an uncontained failure suffered by a Delta Air Lines Boeing 757 nearly three months ago.

Accident investigators issued an urgent recommendation Thursday that the FAA require all PW2037s be removed from service for inspection of the hubs at flight-hour and cycle thresholds “significantly” short of those achieved by the incident engine, which had logged 10,880 hours/4,392 cycles. They also recommended such engines be subject to continuing checks until the cause of, and corrective action for, previous cracking instances has been established.