Piaggio P-149D Handbook:
Startup Procedure:
To Startup the engine, first check if:
Mixture
: 0%
Fuel Pump: ON
Fuel Valve: OPEN
Fuel Selector: BOTH
Magnetos: BOTH
Throttle: 0%
Then Push the starter and when RPM reaches 500 push a little of mixture. Keep increasing slowly the mixture until RPM reaches its full-mix RMP of around 800.
Taking Off:
To Take off, set elevator trim at 0% or accrdignly on your CG position - aircraft load status. Set one notch of flaps (25%). Make sure that Propeller condition is at full forward, and set some rudder trim to prevent torque. Advance Throttle to 100% slowly and rotate when the aircraft reaches 60 KIAS. After the aircraft lifts off, retract flaps and landing gear, and set prop pitch to 3000 RPM to prevent engine from overheating. Maximum power of 274 HP @3400 RPM (Full Forward) is available only for 5 minutes.
Cruise:
You Can cruise at altitudes Up to 8000 Ft or as high as you can breathe on a non-pressurized aircraft... With a throttle setting at about 75% you should travel at around 130 KIAS and with a range of 600 NM. Remember to set prop pitch for a maximum RPM of 3000. You can set it at lower values for noise reduction or greater fuel economy at altitude.
Landing:
To Land You may keep a speed not lower than 50 KIAS that is stall speed. Lower than 55 the plane approaches stall and becomes unstable. You can anyway try (at your own risk) to land at 50 KIAS for very short-field results. Ideal landing speed over the fence is about 60 KIAS, then you just throttle back to idle and gently pull the nose up. Landing is always done with full flaps. Propeller can be left at the 3000 RPM standard cruise setting.