r/flying • u/AviationCPA • 8m left
Would you want to fly this airplane?
I really wish this airplane existed. I would actually buy it. I currently have a Piper Comanche, but I need another seat due to a baby on the way. I've been looking at 6 seat twins and Bonanzas and Saratogas, but since the 916 came out, I've had this thought in my head...
Imagine an airplane with 3 Rotax 916is engines. If you loose an engine, you still have 2/3 of your power, which is enough to climb out of trouble. According to AI calculations, the blue line would be 8 knots below Vy, so it is basically a non-issue in this aircraft configuration. So basically, the engine-out safety margin would be unmatched. The installed weight of a 916 is literally 1/3 of a TSIO-520 So the plane would be lighter than a typical twin. A 916 is $57K, so you could get 3 for the same price as 2 on a turbo twin. Fuel burn is significantly less than almost all twins especially pulling back to 45% or 55%. Maintenance on a Rotax is far less than on any Lycoming or Continental, and cylinder changes are rare. Useful load and range would be outstanding.
AI-Based stats assuming 24lbs of wing loading (205 SF), composite construction, 2,850 empty weight, and 150 gallons of fuel.
Cruise speed at 12,000 Feet:
45% - 146KTS@12.0GPH - 1840NM
55% - 164KTS@15.1GPH - 1630NM
65% - 178KTS@18.7GPH - 1420NM
75% - 191KTS@21.6GPH - 1305NM
85% - 201KTS@26.2GPH - 1130NM
Rate of climb: (SL - 1925 FPM) (10,000ft - 1570FPM)
Empty weight 2,850 LBS
MTOW: 4800 LBS
Useful Load: 2050 LBS
Full Fuel payload: 1050 LBS