Amateur Built GY-20-1, Serial Number RHR 1 Manufactured by Mr Kurt Riesen in Switzeraland after the original drawings ans homebuilt (Non - EASA) Empty Weight: 338.5 kg MTOW: 515 kg Noise: ICAO Annex 16, Vol. 1, Chapter 6, 63.3 dB(A), Swiss Category C Cruise Speed: 85 Kts with 16/17 Liter Fuel Consumption Airframe: Total Time: 1659 hours Engines: Engine Continental A65, Serial Nu......more.