Multi-Engine Aerodynamics

Identifying the critical engine:

(It is critical to remember the past)

PAST

P-factor

Accelerated slipstream

Spiraling slipstream

Torque

 

Vmc certification requirements 23.149

 

SMACFUM

Standard day at sea level

Max power

Aft CG

Critical engine windmilling

Flaps/gear down

Up to 5° bank

Most unfavorable weight

Lost engine memorized checklist

Maintain directional control

Blue line or better (82KIAS DA42)

Max power on the operating engine

Flaps up

Gear up

Identify: dead foot dead engine

Verify: throttle position, instruments