Multi Engine Considerations

Question 1

How is the Critical Engine defined?

Answer 1

The engine whose failure would most adversely affect the performance or handling qualities of an aircraft.
P.A.S.T.

FAR 1.1

Question 2

What are the criteria for certifying & establishing Vmc?

Answer 2

• Max power
• Prop windmilling
• Most unfavorable weight (aft cg)
• In takeoff condition (flaps up, gear up)
• Out of Ground effect
  AND
  1. Stop the turn within 20 degrees of original HDG
  2. Maximum of 5 degrees of bank

Found in FAR part 23.

(SMACPPLEFBO)

Question 3

Define Vmc

Answer 3

1. The calibrated airspeed at which..
2. It is possible to maintain control and..
3. maintain STRAIGHT flight at the same speed with….
4. A bank of not more than 5 degrees while..
5. the Critical Engine is inop

FAR 23.149 (airworthiness standards)