When to Fly Vx, Vy, Vxse and Vyse
During normal two-engine operations, always fly Vy (or Vx if necessary for obstacle clearance) on initial
climb-out. Then accelerate to your cruise climb airspeed, which may be Vy plus 10 to 15 kts, after you
have obtained a safe altitude. Use of cruise climb airspeed will give you better engine cooling, increased
in-flight visibility and better fuel economy. However, at the first indication of an engine failure during
climb-out or while on approach, establish Vyse or Vxse, whichever is appropriate. (Consult your Handbook
or Flight Manual for specifics.)
Know the key airspeeds for your airplane and when to use them:
Vmca (Red Radial) never fly at or near this airspeed except in training or during flight test situations.
Vsse never intentionally cut an engine below this airspeed.
Vyse (Blue Radial) always fly this airspeed during a single-engine emergency during climb-out (except
when necessary to clear an obstacle after takeoff) and on final approach until committed for landing.
Vxse fly Vxse to clear obstacles, and then accelerate to Vyse.
Know the performance limitations of your airplane, including its:
· Accelerate-stop distances,
· Accelerate-go distances,
· Single-engine service ceiling, and
· Maximum weight for which single-engine climb is possible.
Know the basic single-engine emergency procedures:
Maintain control of the airplane by flying at the proper airspeed.
Apply maximum power, if appropriate.
Reduce drag (includes feathering).
Complete Engine-out Checklist.
And finally, put your knowledge into practice with a qualified instructor observing and assisting you.
Proficient pilots can handle engine failures competently and safely. Keep your proficiency up and every
flight in a multi-engine airplane should be a safe one.