FAA 8740-66

Question 1

OEI

Answer 1

one engine inoperative

Question 2

Vr

Answer 2

rotation speed

Question 3

Vlof

Answer 3

lift of speed

Question 4

Vmc

Answer 4

minimum control speed

Question 5

when do you retract landing gear

Answer 5

after a positive rate of climb is established, but not before reaching a point from which a safe landing can no longer be made on the runway or overrun remaining

Question 6

what is a critical engine

Answer 6

the engine whose failure would most adversely affect the airplane’s performance or handling qualities

Question 7

which engine is critical

Answer 7

both engines turning in a conventional, clockwise rotation (viewed from the cockpit), the left engine is critical; at cruise airspeed, the thrust line of each engine may be considered to be the propeller hub

Question 8

why is the left engine critical

Answer 8

with the props rotating clockwise, the descending blade on the left engine is close to the centerline; right engine descending blade is farther from the centerline which creates greater yawing force if left engine fails

Question 9

explain Vmc

Answer 9

minimum flight speed at which the aircraft is directionally controllable with a bank of no more than 5 degrees when the critical engine is inoperative (windmilling) and the remaining engine is operating at takeoff power

Question 10

what happens to controllability when airspeed slows below Vmc

Answer 10

there may not be sufficient rudder authority to counteract the yawing movement and maintain directional control of the airplane

Question 11

counteract OEI yaw

Answer 11

loss of power one one engine creates yaw due to asymmetrical thrust

Question 12

counteract OEI roll

Answer 12

loss of power on one engine eliminates propeller blast over the wing; this elimination affects the lift
distribution over the wing, causing a roll toward the inoperative engine

Question 13

critical engine failure aerodynamics acronym

Answer 13

P - p factor
A - accelerated slipstream
S - spiraling slipstream
T - torque

Question 14

p factor

Answer 14

descending blade on the right, moment arm is longer on right side

Question 15

accelerated slip stream

Answer 15

asymmetrical thrust causes greater lift on side of descending blade

Question 16

spiraling slip stream

Answer 16

slipstream from the left hits vertical stabilizer on left yawing aircraft to the left; slipstream from the right hits nothing and drifts away; if you lose left engine slipstream from the right won’t help counter yaw to the left and control corrections by rudder and ailerons become more essential

Question 17

torque

Answer 17

clockwise turning procedures counterclockwise rolling; losing left engine means yaw and roll left

Question 18

describe side slip

Answer 18

the angle at which the relative wind meets the longitudinal axis of the airplane

Question 19

Vyse

Answer 19

best single engine rate of climb

Question 20

describe Vyse

Answer 20

delivers the greatest gain in altitude per unit of time with the airplane in the following configuration:
* inoperative engine propeller in the minimum drag position (feathered)
* max power on remaining operative engine
* landing gear retracted
* wing flaps in most favorable postition
* cowl flaps as required for engine cooling
* airplane flown at zero sideslip

Question 21

what factors determine Vmc

Answer 21

• max available takeoff power
• prop windmilling in in takeoff pitch
• most favorable (aft most) center of gravity and max takeoff weight
• landing gear retracted
• wing and cowl flaps in takeoff position
• trimmed for takeoff
• airborne, out of ground effect

Question 22

with other factors constant what is Vmc highly sensitive to

Answer 22

bank angle

Question 23

explain Vmc and bank angle

Answer 23

Vmc is reduced significantly with increases in bank angle; Vmc increases significantly as the wings approach level

Question 24

Vxse

Answer 24

best single engine angle of climb

Question 25

describe Vxse

Answer 25

used only to clear obstructions during OEI initial climb out because it gives the greatest altitude gain per unit of horizontal travel

Question 26

Vsse

Answer 26

safe single engine speed

Question 27

describe Vsse

Answer 27

minimum speed at which engine failures are to be performed

Question 28

accelerate stop distance

Answer 28

runway required to accelerate to either Vr or Vlof and assuming an engine failure at that instant to bring the airplane to a complete stop

Question 29

accelerate go distance

Answer 29

distance required to accelerate to either Vr or Vlof and assuming engine failure at that instant to continue the takeoff on the remaining engine and climb to a height of 50 ft

Question 30

what is the single engine service ceiling

Answer 30

the altitude at which twins can no longer climb at 50 ft per minute in smooth air with one engine feathered at max certified takeoff weight

Question 31

what is the single engine absolute ceiling

Answer 31

the rate of climb is zero