American Aircraft Sales is proud to present Twin Commander N823SB featuring 6720.2 Hours Since New, the Twin Commander Renaissance Upgrade, Modified Winglet Installation and Super Q-Tip Propellers, For Immediate Sale. Airframe: Total Time: 6,720.2 Engines: Engine 1: TPE331-10T 515K Engine #1: 6358.2 Hours / 7133 Cycles / TSO: 1641.7 Hours / Cycles SOH: 1677 5400 TBO; 1800 HSI Intervals ......more.