The AV-30-C is a compact, certified electronic flight instrument system (EFIS) designed for general aviation aircraft. Manufactured by uAvionix, its primary function is to replace the traditional, mechanical vacuum-driven flight instruments—specifically the Attitude Indicator (AI) and the Directional Gyro (DG)—with a high-performance, digital alternative.
The "C" in AV-30-C denotes its Certified status, meaning it has a Supplemental Type Certificate (STC) approval from the FAA for use as a primary flight instrument in a wide range of certified aircraft.
💡 What is the AV-30-C?
The AV-30-C is best described as a multi-function digital flight display that packs a dozen or more critical functions into a single, sleek unit.
Key Features and Technology:
Form Factor: Crucially, it is designed to fit seamlessly into the standard 3-inch round instrument hole in the cockpit panel, allowing for a "retro-fit" digital upgrade without requiring expensive and invasive panel cutting.
Core Function: It serves as a primary display for Attitude (pitch and roll) and Directional Indication (heading or directional gyro), utilizing solid-state AHRS (Attitude Heading Reference System) technology instead of unreliable vacuum pumps.
High-Resolution Display: It features a bright, sunlight-readable screen that automatically adjusts brightness, ensuring visibility in all light conditions.
Internal Backup: It includes an internal battery that can power the unit for up to two hours, providing a critical backup in the event of aircraft power failure, a major safety advantage over traditional vacuum systems.
🛠️ Essential Uses and Functionality
The AV-30-C's real value lies in its all-in-one, multi-functional capability, which significantly enhances pilot situational awareness and simplifies the cockpit.
1. Primary Flight Instruments Replacement
Attitude Indicator (AI): Replaces the mechanical artificial horizon, providing reliable digital pitch and roll information.
Directional Gyro (DG): Replaces the conventional DG, providing direction of flight indication. When paired with the optional AV-Mag accessory or GPS input, its accuracy is enhanced.
Slip/Skid Indicator: Replaces the traditional "ball" in the instrument panel.
2. Enhanced Safety and Awareness Tools
Probeless Angle of Attack (AoA): This is a standout safety feature. The AV-30-C calculates the aircraft's Angle of Attack (a critical measure for stall avoidance) by comparing pitch, flight path, and G-loading, and provides visual and audio alerts when approaching a dangerous AoA.
Altitude and Airspeed: Displays baro-corrected altitude, indicated airspeed (IAS), true airspeed (TAS), and vertical trend/rate (Vertical Speed Indicator).
G-Meter: Provides a visible display of the current G-loadings (+8 / -8 G-Meter).
3. Navigation and Utility Functions
GPS HSI/Map Mode: When connected to an external GPS source, it functions as a Horizontal Situation Indicator (HSI), displaying course guidance, ground track, and waypoint information in a 360-degree compass rose or arc map mode.
System Status: Displays essential utility information like Bus Voltage and Outside Air Temperature (OAT), which is used to calculate TAS and Density Altitude.
🚀 Why the Digital Upgrade Matters
The popularity of the AV-30-C stems from the significant advantages it offers over the legacy vacuum-driven instruments common in older general aviation aircraft:
Eliminating the Vacuum System: Traditional systems rely on a failure-prone vacuum pump. By replacing the AI and DG with the AV-30-C, pilots can often remove the entire vacuum system, reducing maintenance costs, eliminating a potential single point of failure, and saving weight.
Increased Reliability: Solid-state digital systems are inherently more reliable than mechanical gyros, which can tumble or fail due to bearing wear. The internal battery provides peace of mind against electrical failure.
Cost-Effective Modernization: The AV-30-C offers the functionality of a much more expensive glass cockpit system while utilizing the existing round instrument hole, making it a highly cost-effective way to modernize a vintage aircraft panel.
Reduced Pilot Workload: Consolidating numerous flight parameters into a single, easy-to-read, customizable display helps reduce the pilot's scan and overall workload.
The AV-30-C transforms the flight experience in legacy aircraft, bringing the reliability and rich data display of a modern cockpit to the classic "round dial" panel.
For a visual demonstration of the AV-30-C's features and its in-flight performance, watch this video:
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