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Private pilot · ACS PA.VII.A · lesson pack

Maneuvering During Slow Flight

Why this one matters

Loss of control in flight is the leading cause of fatal general aviation accidents, and maneuvering is the most common phase: in the traffic pattern, after takeoff, or while distracted. Slow flight trains you to recognize when the airplane is near the edge, from the controls, the sound and the attitude, and to stay in control there instead of stumbling into a stall close to the ground.

1 · Know these cold

  • •For a given wing and configuration, the airplane stalls when it exceeds that configuration's critical angle of attack, at any airspeed, weight, load factor or attitude. Flaps (and frost or contamination) change the airfoil: flaps lower the stall speed but don't raise the critical angle, and may lower it.(PHAK (FAA-H-8083-25C), Aerodynamics of Flight)
  • •Slow flight is flown at an airspeed where any more angle of attack, any more load factor, or any less power would give you a stall warning.(Private Pilot ACS (FAA-S-ACS-6C), PA.VII.A.S3)
  • •No stall warning during the maneuver: if the horn or buffet comes on, reduce the angle of attack.(Private Pilot ACS (FAA-S-ACS-6C), PA.VII.A.S4)
  • •Stall speed rises with load factor and weight; in a level 60° banked turn the load factor is 2 G and the stall speed is about 41% higher.(PHAK (FAA-H-8083-25C), Aerodynamics of Flight)
  • •At low airspeed the controls are less effective: use larger, coordinated control inputs and keep the ball centered.(Airplane Flying Handbook (FAA-H-8083-3C), slow flight, stalls and spins)
  • •Pitch controls airspeed and power controls altitude in slow flight: more power to climb or hold altitude, not more back pressure.(Airplane Flying Handbook (FAA-H-8083-3C), slow flight, stalls and spins)
  • •Clear the area first, and finish no lower than 1,500 feet AGL.(Private Pilot ACS (FAA-S-ACS-6C), PA.VII.A.S1-S2)

2 · The lesson

The aerodynamics
  • Lift depends on angle of attack and airspeed. To hold altitude as you slow down, you must increase the angle of attack, until you reach the critical angle of attack and the wing stalls.(PHAK (FAA-H-8083-25C), Aerodynamics of Flight)
  • The wing always stalls at the same critical angle of attack. The airspeed at which that happens changes with load factor, weight, center of gravity, power and configuration.(PHAK (FAA-H-8083-25C), Aerodynamics of Flight)
  • Higher load factor (a turn or a pull) and higher weight raise the stall speed. A forward center of gravity raises it too, because the tail must push down harder, but improves stability and recovery. An aft CG lowers the stall speed slightly, yet reduces stability and makes stall and spin recovery progressively harder: the lower stall speed doesn't make it safer.(PHAK (FAA-H-8083-25C), Aerodynamics of Flight)
  • Power lowers the stall speed slightly: the propeller slipstream and the vertical part of thrust help. Flaps lower it by changing the wing's shape.(PHAK (FAA-H-8083-25C), Aerodynamics of Flight)
  • At high power and low airspeed, left-turning tendencies are strong: hold right rudder to stay coordinated.(Airplane Flying Handbook (FAA-H-8083-3C), slow flight, stalls and spins)
How it's flown
  • Clear the area with clearing turns, and pick an altitude that keeps the whole maneuver at least 1,500 feet AGL.(Private Pilot ACS (FAA-S-ACS-6C), PA.VII.A.S1-S2)
  • Entry: clear the area, reduce power smoothly while holding altitude with pitch, extend flaps (and gear) in steps only below VFE and VLO, and trim and add power through each change; expect a high power setting to hold altitude.(Airplane Flying Handbook (FAA-H-8083-3C), slow flight, stalls and spins)
  • The target in practice: slow in the assigned configuration until the stall warning starts, lower the nose slightly to silence it, and add power to hold altitude: about 5 to 10 knots above the 1-G stall speed for that configuration, held +10/-0 knots with no warning.(Airplane Flying Handbook (FAA-H-8083-3C), slow flight, stalls and spins)
  • Why pitch holds speed and power holds altitude here: you're in the region of reversed command (the back side of the power curve, below L/D max), where drag rises as speed falls, so flying slower takes more power and the speed is unstable.(Airplane Flying Handbook (FAA-H-8083-3C), slow flight, stalls and spins; PHAK (FAA-H-8083-25C), Aerodynamics of Flight)
  • Hold airspeed with pitch and altitude with power. Trim to relieve the pressure.(Airplane Flying Handbook (FAA-H-8083-3C), slow flight, stalls and spins)
  • Turns, climbs and descents: shallow to medium bank, about 20° or less (±10° of the specified bank). Add power (and a little pitch) for turns and climbs, because the bank raises the load factor and stall speed; reduce power for descents. Re-check airspeed, altitude and the ball after every change. Uncoordinated flight at high angle of attack is how spins start.(Airplane Flying Handbook (FAA-H-8083-3C), slow flight, stalls and spins)
  • The controls feel mushy and need more movement, but keep the inputs smooth, deliberate and coordinated: abrupt movements at high angle of attack can cause a stall. Use rudder with aileron for adverse yaw, and don't pick up a dropping wing with aileron alone.(Airplane Flying Handbook (FAA-H-8083-3C), slow flight, stalls and spins)
  • If the horn or buffet starts: promptly reduce the angle of attack slightly to stop it and add power as needed to hold altitude and speed, staying coordinated; never hold altitude with back pressure. If a full stall develops, do a full stall recovery.(Airplane Flying Handbook (FAA-H-8083-3C), slow flight, stalls and spins; Private Pilot ACS (FAA-S-ACS-6C), PA.VII.A.S4-S5)
  • To recover: full (maximum allowable) power, forward pressure to reduce the angle of attack while holding altitude and coordination, wings level; let the speed build to a safe value first, then retract the flaps in steps (expect a pitch change and some sink) and the gear per the POH, and re-trim. Never raise all the flaps at once at low speed.(Airplane Flying Handbook (FAA-H-8083-3C), slow flight, stalls and spins)
Warnings and the environment
  • Stall warning devices (horn, light, buffet) come on shortly before the stall, but they can fail, and buffet varies by airplane. Know the feel too: mushy controls, quiet air noise, a high nose.(Airplane Flying Handbook (FAA-H-8083-3C), slow flight, stalls and spins)
  • Inadvertent slow flight is the danger: a climb-out with a high nose, a distracted pattern, a steep turn to final. Recognize it and lower the nose before the warning becomes a stall.(AC 120-109A, Stall Prevention and Recovery Training)
  • Turbulence and gusts change the angle of attack suddenly; at slow flight speeds a gust can stall the wing. Microburst and wind shear can drop the airspeed quickly.(Airplane Flying Handbook (FAA-H-8083-3C), slow flight, stalls and spins)
  • At high density altitude the engine and propeller make less thrust, so there is less margin to climb out of slow flight. Indicated stall speed is about the same, but true airspeed and groundspeed are higher.(PHAK (FAA-H-8083-25C), Aerodynamics of Flight)
Staying ahead of it
  • Slow flight demands attention. Keep scanning outside for traffic and inside for airspeed, altitude and the ball, and don't fixate on one instrument.(Airplane Flying Handbook (FAA-H-8083-3C), slow flight, stalls and spins)
  • If you're distracted or disoriented, the first priority is the same: lower the nose and add power. Fly the airplane first.(Risk Management Handbook (FAA-H-8083-2A))

Want it all on one page, with scenarios? Read the full lesson.

On the flight

ACS standards

  • Altitude ±100 feet; heading ±10°; airspeed +10/-0 knots; angle of bank ±10°.(Private Pilot ACS (FAA-S-ACS-6C), PA.VII.A.S5)
  • No stall warning during the maneuver; finish no lower than 1,500 feet AGL.(Private Pilot ACS (FAA-S-ACS-6C), PA.VII.A.S2, S4)

What your instructor is watching for

Your instructor watches whether you hold airspeed with pitch and altitude with power, keep the ball centered with rudder, keep looking outside, and react to any stall warning by lowering the nose right away.

3 · Say it out loud

Answer each one out loud, then check yourself and mark how it went.

  1. Remember Recall it

    “What causes an airplane to stall?”

  2. Understand Explain why

    “Why does stall speed go up in a steep turn?”

  3. Apply Use it on a flight

    “You're turning base to final, slow, and the stall horn chirps. What do you do?”

4 · Common mistakes

  • Chasing altitude with the elevator.

    Pulling back in slow flight raises the angle of attack and drops the airspeed toward a stall.

    Instead: Use power for altitude and pitch for airspeed.

  • Forgetting right rudder.

    High power at low airspeed yaws the airplane left; uncoordinated flight at high angle of attack is the setup for a spin.

    Instead: Keep the ball centered with rudder, especially when adding power.

  • Staring at the airspeed indicator.

    Heads-down flying loses altitude, heading and traffic.

    Instead: Set the attitude outside, then cross-check the instruments.

5 · Quick check

Answer, then reveal. Flag anything you want to see again.

  1. 1. At what angle of attack does a wing stall?

  2. 2. In a level 60° banked turn, what is the load factor?

  3. 3. What are the ACS tolerances for slow flight?

  4. 4. What is the lowest altitude for finishing slow flight in a single-engine airplane on the checkride?

  5. Scenario5. You're in slow flight and the stall horn starts. What do you do?

  6. 6. Why is there less margin in slow flight at high density altitude?

Trained it? Now prove it: practice maneuvering during slow flight out loud with our examiner.

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Connect it

One situation that runs across this lesson and its neighbors in the same ACS area. Decide first, then check.

Connect it · Slow Flight & Stalls

A gusty crosswind gives you a tailwind on base, and the higher groundspeed carries you through final on the turn. You're slow and tempted to add bottom rudder to tighten the turn.

What links slow flight, stall recognition and spin awareness here? Decide, then see the worked answer

The tailwind on base raised your groundspeed and carried you through the final course; that's the setup, so recognize the setup rather than wait for stall cues, because a cross-controlled stall gives little warning. Rudder doesn't tighten a turn the way you want. Bottom rudder yaws the nose in and steepens the bank, so you hold opposite aileron to stop the roll and pull to keep the nose up. Bottom rudder, opposite aileron and back pressure together drive the inside wing to its critical angle of attack first, and the airplane can roll into a spin too low to recover. Overshoot plus inside rudder plus opposite aileron plus back pressure means unload and go around, now. The go-around is the default for this overshoot; continue only if you can rejoin with a gentle, coordinated, shallow turn and a stabilized approach. Bank raises the stall speed, and at pattern altitude about 30° of bank is a common warning limit. If it does stall: reduce the angle of attack first, roll the wings level with coordinated controls, add power as appropriate, and go around. Don't pull through it, and don't try to raise a dropping wing with aileron alone.

AFH (FAA-H-8083-3C), Maintaining Aircraft Control; AC 61-67

Brings together: Maneuvering During Slow Flight · Power-Off Stalls · Spin Awareness

Teaching this? The instructor lesson plan →

Study aid, not FAA guidance. Sources: Airplane Flying Handbook (FAA-H-8083-3C); Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25C); AC 120-109A; Private Pilot ACS (FAA-S-ACS-6C); Your airplane's POH/AFM. Checked against current sources 2026-11-12.