Accelerated Stalls


  • Stalls do NOT occur without warning
    • While flying along in cruise flight, a stall will not rip the airplane out of the sky and throw it uncontrollably to the ground to a big smoking crater
  • A stall above 1-g flight is termed an accelerated stall
  • At high load factors, the sudden loss of lift from one wing (whichever stalls first) creates a much large rolling moment than with a 1-g stall
    • The result is a violent departure that resembles a snap roll
  • During a rapid departure from controlled flight, the normal CLmax may be momentarily exceeded and as a result, the aircraft could be overstressed or damaged below the corner speed (maneuvering airspeed)
  • Accelerated stalls demonstrate stalls are a function of angle of attack and not airspeed
  • If the airplane is slipping toward the inside of the turn at the time of the stall, it tends to roll rapidly toward the outside of the turn as the nose pitches down, because the outside wing stalls before the inside wing
  • If the airplane is skidding toward the outside of the turn, it will have a tendency to roll to the inside of the turn, because the inside wing stalls first
  • If the coordination of the turn at the time of the stall is accurate, the airplane's nose will pitch away from the pilot just as it does in a straight flight stall
  • Stalling will occur at a higher airspeed and thus, a lower than expected pitch resulting in a quick, unexpected stall
  • If an uncoordinated turn is made, one wing may tend to drop suddenly, causing the airplane to roll in that direction; if that occurs, the excess back-elevator pressure must be released, power added, and the airplane returned to straight-and-level flight with coordinated control pressure

All procedures here are GENERALIZED for learning.
Fly the maneuver in accordance with the Pilot Operating Handbook (POH)
and/or current Standard Operating Procedures (SOPs)

Stall Avoidance

  • Avoid flying at minimum airspeeds
  • Remain in the normal flight envelope
  • Avoid abrupt maneuvers

Accelerated Stall Graphic
Figure 1: Accelerated Stall Graphic

Common Errors:

  • Failure to adequately clear the area
  • Failure to establish the specified landing gear and flap configuration prior to entry
  • Improper pitch, heading, and bank control during straight ahead stalls
  • Use outside and instrument references
  • Right rudder in nose-high power-on condition; release at break
  • Improper pitch and bank control during turning stalls
  • Rough or uncoordinated control technique
  • Failure to recognize the first indications of a stall
  • Failure to achieve a stall
  • Improper torque correction
  • Poor stall recognition and delayed recovery
  • Excessive altitude loss or excessive airspeed during recovery
  • Secondary stall during recovery

Airman Certification Standards:


  • It is important to note that individual aircraft may have stall characteristics unique to them due to bends/twists which develop in the airframe over time depending on their use