SPIN SPIN SPIN

Question 1

What causes a spin?

Answer 1

A full stall plus a yaw acting on the plane at, or beyond, the point of the stall

Question 2

What can cause the plane to yaw?

Answer 2

Uncoordinated, turbulence/wind shear, torque, P factor, slipstream, gyroscopic precession, improper aileron usage, adverse yaw (a slip), asymmetrical thrust

Question 3

Which way will the airplane stall?

Answer 3

In the direction of the yaw.

Question 4

In a spin, are both wings stalled or just one?

Answer 4

both wings are stalled

Question 5

Are the wings producing any lift in a stall and or spin?

Answer 5

Yes, in both a stall and a spin the wings are producing lift just not enough to maintain level flight

Question 6

In a spin to the left, which wing has the greater AoA? and which wing is producing more drag?

Answer 6

The lower/inside wing is at the higher AoA and is creating more drag; it is more stalled, it has more exceeded the critical AoA

Question 7

What happens to the spin if you add aileron in the direction of the spin?

Answer 7

Tightens/speeds up the spin and points the nose down, tends to transition into a spiral

Question 8

What happens to the spin if you add aileron opposite the direction of the spin?

Answer 8

The spin flattens, the nose rises and recovery becomes more difficult

Question 9

During a spin is the plane spinning downward around is own vertical axis or an independent spin/vertical axis?

Answer 9

The plane follows a downward corkscrew path around an independent, spin axis.

Question 10

What does the ASI show once established in a spin?

Answer 10

Stabilized at an airspeed around the stall speed, usually a little below

Question 11

What’s the difference between a spin and a spiral?

Answer 11

In a spin the plane is stalled. In a spiral the wings are not stalled, the plane is just flying in a spiral dive to the ground

Question 12

Define a spin.

Answer 12

aggravated stall, that occurs from a full stall with the airplane in a yawed state. It follows a downward corkscrew path “autorotation”

Question 13

Aerodynamically, what causes the airplane to enter the downward corkscrew in a spin?

Answer 13

The lowered wing is stalled more and has a greater AoA which creates more drag, The raised wing is less stalled and has a lower AoA which creates less drag and more lift.

Question 14

Which instrument can you reliably tell which way you are spinning?

Answer 14

The Miniature airplane/ rate of turn indicator. “stomp the raised wing down”

Question 15

Why is the Rate of turn indicator reliable?

Answer 15

doesnt tumble because of stoppers

Question 16

Why would you not use the AI or HI?

Answer 16

Their gyros tumble

Question 17

How could you tell if youve transitioned from a spin into a spiral?

Answer 17

ASI will start increasing, as you are no longer stalled

Question 18

What are the stages of a spin?

Answer 18

Entry, incipient, Fully Developed, recovery

Question 19

What characterizes both the incipient and fully developed stages?

Answer 19

Incipient: first 2-4 turns where aerodynamic and inertial forces have not balanced

Fully Developed: Plane is in equilibrium, Rate of rotation, rate of descent, and airspeed are all stabilized in a near vertical downward flight path

Question 20

What is the generic spin recovery for a SE airplane?

Answer 20

PARE in that order.

Question 21

Why Power out?

Answer 21

this reduces the left turning/ yaw tendancies, slows the rate of rotation and rate of descent, and decreases airflow over the elevator in order to reduce negative lift (down force on tail) and help lower the nose to break the critical AoA

Question 22

Why Aileron neutral?

Answer 22

using aileron control opposite the spin direction flattens the spin by increasing the AoA on the lower wing, thus deepening the stall, Using same direction aileron causes the plane to roll into a steeper spin attitude, increase the rate of rotation, and delay recovery

Question 23

Why Rudder Opposite?

Answer 23

considered the most important, this input aims to resist the spin direction and yaw the plane out of the spin

Question 24

Why Elevator briskly forward?

Answer 24

this reduces the AoA below the critical AoA, thereby reattaching smooth airflow over the tops of the wings and breaking the stall

Question 25

In a spin, approximately how many feet are lost in each 3 second turn?

Answer 25

500ft (10,000 fpm descent)

Question 26

What are the 3 types of spins listed in AC61-67?

Answer 26

Incipient, fully developed, and flat

Flat is most dangerous

Question 27

What is a flat spin and why is it a particularly dangerous?

Answer 27

A flat spin is a spin with a nose high attitude. It is dangerous because it is harder to get the nose down in order to break the stall during the recovery

Question 28

What effect does an aft CG have on spin recovery? Why?

Answer 28

Makes it more difficult. Leverage arm

Question 29

If you spin with flaps extended, when should you retract them?

Answer 29

Leave flaps extended until the spinning stops. Flaps help keep the nose down. Once the spin has stopped retract immediately

Question 30

Approximately how many Gs does the airplane experience during the spin and in the recovery?

Answer 30

1G during spin, and 2.5Gs during recovery

Question 31

Where and when are unintentional spins most likely to occur and why?

Answer 31

takeoff and landing environment where airspeeds are slower and distractions are higher. Base to final turns, go arounds and short field takeoffs. Low airspeed maneuvers

Question 32

How can you determine whether your aircraft is certified for intentional spins?

Answer 32

TCDS, Limitations section of POH, placard in the cockpit

Question 33

What are the Utility category load limits?

Answer 33

4.4 to -1.76

Question 34

Is a spin an aerobatic maneuver?

Answer 34

Yes according to 91.303

Question 35

Where are aerobatic maneuvers prohibited?

Answer 35

Over congested area, open air assembly of people, within Class B,C,D,E for an airport, withing 4nm of the centerline of any federal airway, below 1500ft agl, or when flight visibility is less than 3sm

Question 36

During spin training for the 61.183(i) endorsement, are the pilots required to wear parachutes, why?

Answer 36

No, According to 91.307(c) parachutes are not required for spins that are required for a cert or rating