FAA Grants Approval for Holy Micro!’s Highly Anticipated Absolute AoA! – Experience It at Oshkosh 2025, Hangar C Booths 3149 & 3150
Holy Micro! LLC (holymicro.com), renowned for its talking AGL altimeters and voice alert systems—the SkyVoice Alert 500 and SkyVoice Glassy Guide 400 for land and sea aircraft (often called “Bitching Betty” or “Barking Bob” by pilots)—has received FAA certification for its newest innovation: the Absolute AoA system.
These products will be showcased and available for purchase at EAA AirVenture Oshkosh 2025. Following a successful debut at the SUN ‘n FUN Aerospace Expo, where it earned enthusiastic praise from pilots and aviation professionals, the FAA-approved Absolute AoA is now set to reach a broader audience at Oshkosh.
Why Absolute AoA Stands Out
Absolute AoA employs a highly advanced multi-sensor normalized pressure ratio method, a significant improvement over outdated single-sensor pressure differential systems. This cutting-edge technology delivers accurate, real-time angle-of-attack data throughout all flight phases and features automatic flap position detection.
In its Special Airworthiness Information Bulletin (SAIB: 2024-07), the FAA highlights the critical role of AoA alerting systems in enhancing situational awareness and reducing stall and loss-of-control (LOC) incidents. Absolute AoA directly addresses this need with a reliable, intuitive design, empowering pilots to make safer, better-informed decisions.
Limitations of Traditional AoA Systems
Conventional single-sensor differential AoA indicators offer limited safety benefits—typically only effective in low-speed, high-angle-of-attack scenarios where the aircraft’s built-in stall warning already performs adequately. They also introduce challenges like sensor placement complexities, calibration difficulties, drainage issues, heating requirements, and extensive pilot training.
Many aircraft already have stall warning systems—so why add another AoA device that only functions in extreme conditions? The answer lies in the narrow utility of most existing AoA systems, which serve primarily as stall warnings and lack versatility. Additionally, the absence of standardized display formats can hinder usability.
In contrast, Absolute AoA provides real-time, precise angle-of-attack data for takeoff, climb, cruise, and landing, delivering safety, performance, and confidence far beyond basic stall prevention.
Advanced Technology for Every Phase of Flight
This fully independent system is engineered to deliver highly accurate AoA readings in all flight conditions. By leveraging multiple sensors, it calculates a normalized pressure ratio—a method validated through independent studies and extensive flight testing over 20 years.
Whether flying at high or low altitudes, varying speeds, or different load configurations, Absolute AoA provides reliable, trustworthy data. Unlike systems focused solely on stall speed, it also supports key performance speeds like Vx, Vy, Best Glide, and more. (This product is patent pending.)
Innovative Design & Easy Installation
- The AoA probe is crafted from high-grade 6061 aluminum for durability and fits seamlessly beneath the wing’s inspection plate.
- A breakthrough feature is its LiDAR-based flap position detection, eliminating the need for physical connections to the flap system. This ensures correct profile loading during takeoff, approach, and landing.
Installation is quick and hassle-free:
- Wireless setup: 1 hour.
- Wired option: Typically 3–4 hours using the existing under-wing inspection plate.
Flexible Connectivity & Display Options
- Reliable communication: Choose between Wi-Fi or wired connectivity between the wing-mounted sensor and the cockpit processor.
- Customizable displays:
- 2.8-inch panel-mount display
- Bar-style dash-mounted display
- 6.5-inch digital HMI (Human-Machine Interface) for effortless setup and calibration.
Precision Across the Entire Flight Envelope
Unlike conventional differential pressure systems—which often lose accuracy outside stall conditions—Absolute AoA delivers linear, precise angle-of-attack readings in all flight regimes. This gives pilots clear, actionable data, significantly improving safety and performance, especially during takeoff, landing, and slow-speed maneuvers.
Learn more at www.holymicro.com
