Early on, pilots are taught that safety of flight depends on, among other things, a consistent flow of air across the airfoil and a positive angle of attack to produce lift. AOA is the angular difference between the wing’s chord line and the relative wind. Increase back pressure on the controls and lift increases, up to a point. Too steep an angle of attack, and that sweet lift-generating airflow goes haywire. Reduce the angle of attack, and the wing will fly once again. So vital is your awareness of the aircraft’s AOA at all times, the Wright brothers’ first airplane included a rudimentary AOA indicator built from a piece of wood and a length of yarn. So if the physics behind this are simple, why do these loss-of-control accidents occur?
Angle of Attack Guidance in the Panel
Key Takeaways:
- Loss-of-control accidents in general aviation frequently stem from pilots relying on airspeed as an inaccurate proxy for Angle of Attack (AOA), which fails to provide reliable stall awareness under varying flight conditions like weight or bank angle.
- Angle of Attack (AOA) indicators offer pilots precise, real-time information about a wing's proximity to a stall, independent of aircraft configuration or maneuver, significantly enhancing safety and enabling more accurate flight control.
- Despite FAA support and reduced installation costs via NORSEE, AOA indicators are not prevalent in most GA aircraft, and their effective use requires a fundamental shift in pilot training away from traditional airspeed-centric approaches, with wider adoption dependent on industry and pilot demand.
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