Before revision: In 2016 the programs were succeeded by the Adaptive Engine Transition Program (AETP) , focused on developing and testing a 45,000 lbf (200 kN) thrust class adaptive cycle engine for next generation fighter aircraft and potential F-35 re-engining .
After revision: In 2016 the programs were succeeded by the Adaptive Engine Transition Program (AETP) focused on developing and testing a 45,000 lbf (200 kN) thrust class adaptive cycle engine for and the Next Generation Adaptive Propulsion (NGAP) program for a related 35,000–40,000 lbf (156–178 kN) thrust class engine to power the Next Generation Air Dominance fighter aircraft potential F-35 re-engining .