Stalls/Recoveries/Spins Flashcards
OCF can be induced by one of these four conditions:
- Uncoordinated (out-of-bounds) flight
- Improper control inputs
- Overly aggressive control inputs
- Structural damage
OCF phases:
- Poststall gyrations
- Incipient spins
- Steady-state spins
-Indications of post-stall gyrations
- Loss of control effectiveness
- Stalled or near stalled AOA with stick shaker
- Transient or erratic airspeed indications
- Random rate-of-turn indications
Indications of incipient spin:
- Oscillatory, rotating motion
- Stalled AOA with stick shaker
- Airspeed ac/de-celerating toward steady state value
- Rate-of-turn pinter fully deflected in the direction of rotation
Erect Spins are performed with the following control inputs:
- Full aft stick
- idle power
- Full rudder applied in direction of spin
Erect Spin entry procedures
- 120 to 160 Knots
- Raise nose to 15-40* nose high
- PCL Idle
- Maintain 1 G
- At 80 Knots, smoothly apply back pressure to maintain pitch attitude
- Full rudder in direction of spin
Indications of Inverted Spin
- Pitch 30* nose low
- AOA - 0 Units
- Rate-of-turn pointer fully deflected in the spin direction
- ASI - 40 KIAS
- Accelerometer - -1.5 Gs
Erect Spin Indications
- Sustained yaw rate
- AOA - 18 units with stick shaker
- Rate-of-turn pointer fully deflected in the spin direction
- 60* nose low
- 2-3 seconds per turn
- VSI - 6000 fpm
- ASI - 120-135 KIAS
Inverted Spin Recovery Procedures
- Clean Config
- PCL - IDLE
- Rudder- Full opposite
- Control Stick - Aft of neutral with ailerons neutral
- Smoothly recover to level flight
Spiral Indications
- Nose low attitude
- Rapidly increasing airspeed through 160 knots
- AOA less than 18 Units
- Feels more violent than spin
Power on Stall Entry Parameters
Pitch: NH: 30-40*
NL: 15-30*
Power: 30-60%
Bank: 20-30*
Power On Stall Recovery
- Decrease AOA
- PCL Max
- Coordinated rudder and aileron to wings level
- Recover with min alt lost and w/o secondary stall
Break Turn Stall Entry Parameters
- 200 KIAS
- PCL back to 10*
- Roll 60*
- Midway increase bank/back stick pressure
Break Turn Stall Recovery
- Decrease AOA
- Adjust bank as necessary
- Continue to turn downwind
Overshooting (Nose-Low) Stall Entry
- 120 KIAS for LDG flaps
- Initiate final turn
- Increase bank, back pressure, PCL Idle
- Continue turn to approach to stall
Overshooting (Nose-Low) Stall Recovery
- Decrease AOA
- PCL Max
- Coordinated rudder and aileron to wings level
- Recover with min alt lost and w/o secondary stall
Undershooting (Nose-High) Stall Entry
- LDG config, 120 KIAS
- Begin normal final turn
- Raise nose, shallow bank, PCL IDLE
- Continue turn until approach to stall indication
Undershooting (Nose-High) Stall Recovery
- Decrease AOA
- PCL Max
- Coordinated rudder and aileron to wings level
- Recover with min alt lost and w/o secondary stall
Landing Attitude Stall Entry
- 5-10 KIAS above normal approach airspeed
- PCL IDLE and roundout
- Hold landing attitude until approach to stall
Landing Attitude Stall Recovery
- Reduce backstick pressure/ Decrease AOA
- PCL Max
- Maintain normal landing/TO picture until postive/safe climb
Closed Pull-Up Stall Entry
- 140 KIAS
2. Roll and pull- overaggressive
Closed Pull-Up Stall Recovery
- Reduce backstick pressure
- Rapidly roll wings level
* **Reduce power to 60* for a roll to the left
Power Off Clean Glide Entry
- 125 KIAS, 4-6% Torque
- Increase pitch, bleed airspeed to gear warning horn
Power Off Clean Glide Recovery
- Lower prop to half on the horizon and reestablish glide speed