Pratt already has a sizeable footprint in Poland, where it placed F100 engine work when the country acquired Lockheed Martin F-16s more than two decades ago.
A recent draft FAA inspection mandate for PW1500 and PW1900 parts is the latest step in the extensive plan to mitigate risk from contaminated powder metal.
An engine choice for a 737 successor may be years away, but Boeing is showing signs of preferring ducted engines to the outwardly more efficient open fan.
Rolls-Royce says it remains on schedule to conduct the critical design review (CDR) of the F130 production configuration for the USAF B-52J reengining program.