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Eagle A3 6 Axis Airplane Gyro w/ One-Click Auto-Recovery System

Brand: HobbyEagle /
Regular price 32.99
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Eagle A3 Six Axis Airplane Gyro with Advanced One-Click Auto-Hover and Auto-Recovery System

The Eagle A3 Airplane gyro is the advanced version of our A3-L gyro with an integrated high precision 6-axis (3 gyro + 3 accelerometers) MEMS sensor. The main advantage of a six axis gyro is that it will provide smooth and stable flight in less than ideal flying conditions, AND it will also return your aircraft to upright, level flight at the flip of a switch (Auto-Recovery System). It's like having a panic button should you lose orientation of your plane or find yourself unable to control your aircraft. In addition to the advanced Auto-Recovery System, the A3 also includes an Auto-Hover mode which will put your 3D capable aircraft into a perfect vertical hover at the flip of a switch. Other features include a light-weight protective shell, updated v2.7 logic software, remote master gain control, and automatic gyro calibration at start-up. The A3 supports both analog and digital servos and provides separate gain adjustments for each flight mode. All functions of the Eagle A3 are easy to setup via a simple on-board button and indicator LED. If you are looking for a feature packed six axis gyro at an incredible value, look no further than the Eagle A3.

Why use an airplane gyro? Gyros (also called flight stabilizers) help keep your airplane stable during take-off, flight maneuvers, and landings which can be helpful during windy days or when learning how to fly RC planes. Gyros also help you master aerobatic maneuvers like knife edges and hovering as the system can "lock" in a planes position / trajectory. Once thought to be for beginners only, Gyros are now common in all classes of aircraft and are utilized by all levels of flyers. Gyros are great for learning, they let pilots practice advanced aerobatics, they give you piece of mind in less than ideal flight conditions, and they can often help you avoid costly crash damage.


  • Works with all major receiver brands including Spektrum, Futaba, Hitec, JR, Tactic, and more.
  • 4 Pre-programmed flight Modes:
    • Normal Mode (2D Mode): this is the standard flight stabilization mode found on most airplane gyros.
    • Auto-Recovery Mode (also called Auto Balance Mode): this mode will automatically "right" or balance your aircraft if you lose orientation or if the aircraft becomes inverted. This functionality is similar to Spektrum's SAFE technology.
    • Auto-Hover Mode: this mode will hold the airplane in a perfect hover (nose pointed towards the sky) on 3D capable aircraft.
    • Gyro Deactivated Mode: this turns the gyro off to allow unassisted/non-stabilized flight.
  • 3 Wing Types: Normal Airplane, Flying-wing (Delta-wing) and V-tail.
  • One-key setting mode with colored LED indicator light
  • Remote Master Gain
  • Supports 50Hz, 125Hz, and 250Hz Servo Frequencies
  • Separate gain adjustment for each flight mode
  • Automatic gyro calibration (auto stick centering) at start-up
  • High Voltage (7.4v) compatible
  • Futaba S.Bus and S.Bus 2 compatible
  • Easy to use, extremely well-suited to beginners.
  • small, lightweight form-factor


  • Eagle A3 Flight Stabilizer
  • NEW - 16V EZ-Plug capacitor to help maintain a secure voltage level during flight
  • 3M Foam mounting tape
  • 4 x 150mm(6") male to male servo wires to connect stabilizer to your receiver


  • Input Voltage: DC 5V-7.4V, powered from the receiver directly
  • Gyroscope: 2000 dps, 1kHz
  • Servo Frequency: 50Hz/125Hz/250Hz
  • Servo Travel: 1520500s Limit 970-2070s
  • Operating Temperature: -40 ℃ to 85 ℃
  • Size: 43mm x 27mm
  • Weight: 11 g (excluding wires)

Tech Note: This gyro is not to be used for Nitro or Gas-powered R/C aircraft.

Which Eagle Gyro is right for me?

Sensor 2D Mode 3D Mode Auto-Recovery Auto-Hover Remote Gain S.Bus HV Upgradable Price
A3-L 3-Axis x x x x x $
A3 6-Axis x x x x x x $$
A3 Super II 6-Axis x x x x x x x x $$$

IMPORTANT - Please Read This Carefully

  • Proper setup of the Hobby Eagle Gyro is crucial. Read the gyro instruction manual completely before attempting to fly your aircraft. Failure to follow setup instructions can result in loss of control and inevitable damage to your aircraft.
  • Ensure the gyro is installed in the proper orientation (see manual) and is mounted to a hard surface near the aircraft's CG point.
  • When you first plug in your aircraft battery, keep your radio sticks in the centered positions and DO NOT move your aircraft for at least 10 seconds to allow the gyro to perform self-calibration. The gyro LED will blink blue rapidly for about 3 seconds while calibrating.
  • It is crucial to verify that the gyro is moving the control surfaces in the correct direction BEFORE attempting to fly your aircraft. Failure to do so could result in loss of control or even a crash during flight.
  • We strongly recommend that you setup one of your gyro control switches (3 position switch on your radio) to activate Gyro Disable. This safety feature will allow you to electronically bypass the gyro if you encounter a gyro setup issue during your maiden flight.
  • ANY warranty claim for Hobby Eagle gyros applies to the gyro only, not the aircraft in which the gyro was installed.

One-click Hover and Auto-hover

A new flight mode called Auto-hover was added to the new A3. When operating in this mode, the self-balance ability will be applied to both elevator and rudder. The plane can hold its hover attitude without any control except for the throttle.

After switching to auto-hover flight mode, you only need to control the throttle to maintain enough pulling force for the plane. This mode can be used to reduce the difficulty of hover practice.

Auto-Recovery / Auto-Balance Level Flight

The auto-balance mode is designed especially for beginners or FPV applications. When operating it in this mode, the controller will help the plane achieve level flight automatically. It can also be used to recover the plane from any other attitudes, or help to achieve a stable takeoff and landing.


The new A3 series provides 5-channel inputs and 3-channel outputs. You only need to connect the receiver and servos to the corresponding pins on the side of the controller. The knobs are used to adjust the gain for each flight mode, clockwise to increase, anti-clockwise to decrease. Futaba's S.Bus and S.Bus 2 are supported by the new A3 series.

A3 Setting Menu

When the controller is working, press and hold down the button for more than 2 seconds which will allow you to enter the settings menu as all settings are completed by the button. Please consult the manual for more details.

Package Contents

The box contains 4 receiver wires and 2 pieces of double-sided tape in addition to the A3.

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