Slow Flight, Stalls, and Spins Flashcards
What is a power-on stall?
Full power is being generated at the time of stall
Simulates characteristics of an airplane which has stalled in takeoff or departure configuration
What are the steps for performing a power-on stall?
Establish heading and altitude to permit recovery above 1500’ AGL
Perform clearing turns
Configure airplane for takeoff/departure
Slow airplane to normal liftoff speed
Apply power (full for takeoff stall, as necessary for departure stall)
Establish a climb attitude
Slowly raise nose and hold until full stall occurs
What is the procedure for recovery from a power-on stall?
Immediately reduce pitch attitude/angle of attack
Apply full power
Counteract yaw with rudder
Use aileron to level wings as soon as possible
Retract flaps/gear after positive rate of climb
Accelerate to Vx or Vy before final flap retraction
Return to initial heading, altitude, and airspeed
What standards are expected of a student performing power-on stalls?
Selects appropriate entry altitude (allows recovery above 1500’ AGL)
Establishes takeoff/departure configuration (no less than 65% power)
Maintains heading within +/-10*
Maintains angle of bank within +/-10* (not to exceed 20*)
Recognizes onset and recovers promptly
Retracts flaps/gear appropriately
What are some common errors in performing power-on stalls?
Failure to configure flaps/gear appropriately
Improper pitch/bank control (not slowing airplane/pitch attitude too high)
Rough/uncoordinated use of controls (too little rudder)
Failure to recognize indications of a stall
Failure to achieve a full stall (recovering too early)
Improper torque correction (too much/too little rudder)
Poor stall recognition/delayed recovery
Excessive altitude loss/airspeed gain during recovery
Secondary stall during recovery
What is a power-off stall?
Designed to simulate stall during landing approach
Performed straight ahead and turning (to simulate base to final turn)
What are the steps for performing a power-off stall?
Establish heading and altitude to permit recovery above 1500’ AGL
Perform clearing turns
Extend landing gear (if applicable)
Turn on carburetor heat
Reduce power and maintain pitch to slow airplane to flap range
Extend approach flaps
Reduce power to idle and establish approach airspeed
Smoothly raise nose until stall occurs
What is the procedure for recovery from a power-off stall?
Immediately reduce angle of attack to regain flying speed
Simultaneously apply full power and turn off carburetor heat
Retract flaps incrementally
Level wings with aileron as soon as possible/control yaw with rudder
Establish positive climb at Vx or Vy
Retract final flaps
Return to cruise flight
What standards are expected of students in performing power-off stalls?
Selects appropriate entry altitude (allows recovery above 1500’ AGL)
Establishes stabilized descent (3 degree approach path)
Transitions smoothly to pitch attitude that will induce a stall
Maintains heading within +/-10*
Maintains angle of bank within +/-10* (student), +/-5* (commercial)
Bank angle not to exceed 20*
Recognizes onset and recovers promptly
Retracts flaps/gear appropriately
What are some common student errors in performing power-off stalls?
Failure to configure flaps/gear appropriately
Improper pitch/bank control (not slowing airplane/pitch attitude too high)
Rough/uncoordinated use of controls (too little rudder)
Failure to recognize indications of a stall
Failure to achieve a full stall (recovering too early)
Improper torque correction (too much/too little rudder)
Poor stall recognition/delayed recovery
Excessive altitude loss/airspeed gain during recovery
Secondary stall during recovery
Describe a crossed-control stall.
Airplane is flown in uncoordinated flight (aileron one direction, opposite rudder) and excessive back pressure is applied
Often occurs on base to final turn, result of overshooting the runway centerline
How is the crossed-control stall demonstrated?
Establish heading and altitude to permit recovery above 1500’ AGL
Perform clearing turns
Extend landing gear (if applicable)
Reduce power, maintain pitch to slow to normal glide speed, and retrim
Roll into medium banked turn
Apply excessive rudder in direction of turn, and maintain bank angle with opposite aileron
Increase back elevator pressure to keep the nose from lowering
Continue increasing control pressures until stall occurs
What is the procedure for recovery from a crossed-control stall?
Release control pressures and increase power as necessary
Control yawing tendency with rudder
Use ailerons to level wings as soon as possible
As airspeed approaches Vx, establish Vx climb
Return to cruise flight
What are some common errors related to the demonstration of crossed-control stalls?
Failure to correctly configure aircraft
Not reducing power to typical approach speed
Not increasing crossed-control pressures enough to induce a stall
Not increasing back pressure enough to induce a stall
Improper/inadequate demonstration of recognition and/or recovery
Failure to adequately present hazards of cross-controlled stalls
What elements of crossed-control stalls should CFIs have instructional knowledge of?
Aerodynamics of crossed-control stalls
Effects of crossed controls in gliding, or reduced airspeed turns
Flight situations where crossed-control stalls may occur
Entry procedure and minimum entry altitude
Recognition of crossed-control stalls
Recovery procedure
Describe an elevator trim stall.
Full power applied when airplane configured with excessive nose-up trim
Occur during go-around, simulated forced landing, immediately after takeoff