Powered by a Lycoming 0-360-A1P of 180 hp (134 kW)[5] The A-1B can be modified to accept a Lycoming IO-360-A1D6 engine of 200 hp (149 kW) and an MT MTV-15-B/205-58 propeller under an STC.[6] Husky A-1B-160 Pup Certified on 18 August 2003 without flaps and 21 October 2005 with flaps. Powered by a Lycoming 0-320-D2A, 160 hp (119 kW). The Pup has a smaller engine, a gross weight of 2,000 lb (907 kg) and a useful load of 775 lb (352 kg)[4][5] Husky A-1C-180