TF34 was a series of 40kN turbofan engine in 1970s, which were used on Fairchild A-10, Lockheed S-3...
The engine were later converted into GE CF34, which are widely used worldwide,
They were used on Bombardier CRJ-200, CRJ-700, CRJ-900, CRJ-1000, and E175, E190 aircraft.
Chinese have also used...