General Electric CF34-3A exact turbofan variant in the CF34-1/3 series. EASA rates normal five-minute takeoff thrust at 38.83 kN (8,729 lbf), APR takeoff thrust at 41.01 kN (9,220 lbf), and maximum continuous thrust at 40.66 kN (9,140 lbf). GE records CF34-3A entry into service in 1987 on the Challenger 601; current GE maintenance material still lists CF34-3A manuals, supporting active service support without asserting continued production.