You couldn’t ask for better timing. Holy Micro’s Absolute AoA, an advanced angle-of-attack (AoA) system being introduced at Sun ’n Fun 2025, may be just what the FAA had in mind when it recently released a Special Airworthiness Information Bulletin about AoA awareness and safe flying. The company’s system—a wing-mounted, multi-sensor pod paired with internally mounted control and display units—appears to very capable.
Company owner and product designer Frank Kunnumpurath says the system uses readings from two pressure sensors and a static port to calculate a precise angle of attack that accounts for airspeed, attitude, pressure density, maximum takeoff weight and, in some cases, flap deployment. The reading is sent to a display mounted in your panel (standard 3 1/8-inch cutout) or to a dash-mounted indicator. Each of Holy Micro’s displays offers multiple graphic layouts for AoA visualization, and users can quickly cycle through them with the touch of a button.
The Absolute AoA system can be installed in a most aircraft in about one to four hours. You can tap into a wing light for power and transmit the AoA information via wi-fi to the cabin, or run power and data wires from the fuselage and control unit. The system also comes with its own speaker to alert you to dangerous AoA conditions. Holy Micro expects the FAA to grant NORSEE approval soon so pilots flying certified aircraft won’t need an STC for installation.
It takes at least one hour of flight time to calibrate the system for basic AoA readings. With additional time, pilots can configure the system for AoA feedback at various V-speeds and flap settings. The package includes an Android phone preloaded with the setup app and a direct communication channel to Holy Micro for support. The company is also unveiling radar and LiDAR altimeter systems for general aviation aircraft at this year’s show.
More information is available at www.holymicro.com.
Read more: Learning AoA Flying
