Duncan Maintained Since New!!!! All Inspections Current. CESCOM & JSSI Airframe: TTAF: 7430 Landings: 5902 Engines: Engine 1: 7262 TSN, 4689 CSN. Engine 2: 7266.2 TSN, 4685 CSN. APU: 3467 TSN, 5933 CSN Engines Enrolled on JSSI (100%). APU Enrolled on JSSI (100%). ......more.