The maker of the F-35 Joint Strike Fighter's engines is on track to green light the last of the remaining sources needed to fully replace the propulsion parts that Turkey had supplied prior to that country's removal from the program. While the Defense Department has found and qualified at least one source for each of the 188 engine part numbers in need of alternate providers, an outstanding 3% of back-up parts have yet to be “fully qualified,” a Pratt &...
