1. Introduction
This manual provides essential information for the safe and effective operation of your Fms 500mm PA-18 Super Cub RC Plane. Please read all instructions carefully before assembly and flight to ensure optimal performance and user safety. This aircraft is designed for both beginners and experienced pilots, featuring multiple flight modes and durable construction.
2. What's in the Box
- Fms 500mm PA-18 Super Cub RC Plane (pre-assembled)
- 2.4GHz Transmitter (Remote Control)
- USB-C Rechargeable Battery (Nonstandard Battery)
- Spare Propellers
- 2 Sticker Sets (Red and Blue options)
- Detachable Wire Landing Gear
- Product Manual (this document)
Note: 4 AA batteries for the transmitter are not included and must be purchased separately.
3. Safety Information
- Always operate the aircraft in open areas, away from people, animals, and obstacles.
- Ensure the battery is fully charged and securely connected before each flight.
- Verify all control surfaces (ailerons, elevator, rudder) respond correctly to transmitter inputs.
- Avoid flying in strong winds or adverse weather conditions.
- Keep fingers clear of the propeller when the battery is connected.
- Recommended age for operation is 16 years and up.
4. Setup Guide
4.1. Landing Gear Installation
The detachable wire landing gear can be easily installed by inserting the wire ends into the designated slots on the underside of the fuselage. Ensure they are firmly seated.

Image: Close-up of the Fms PA-18 Super Cub showing the detachable wire landing gear and propeller saver design.
4.2. Battery Connection
Connect the aircraft battery to the flight controller. Ensure the connection is secure. The aircraft is ready for flight once the battery is connected and the throttle is quickly pushed to the highest position and then pulled back to the lowest position, followed by a "beepbeep" sound.
Video: This video demonstrates the process of connecting the aircraft battery and activating the flight system, including the one-key return feature. It shows the rudder moving left to right to confirm activation and the throttle sequence for unlocking the motor.
4.3. Transmitter Setup
Insert 4 AA batteries into the 2.4GHz F06 transmitter. The transmitter features trim switches and control sticks. A switch on the top left allows selection of flight modes.

Image: The Fms PA-18 Super Cub demonstrating its three flight modes: Full-Stabilizing, Optimized Stabilization, and Manual Control, indicating varying levels of gyro assistance.
5. Operating Instructions
5.1. Flight Modes
The Fms PA-18 Super Cub offers three distinct flight modes, selectable via a switch on the transmitter:
- Beginner Mode (Full-Stabilizing): Provides maximum gyro assistance for stable and easy flight, ideal for first-time pilots.
- Intermediate Mode (Optimized Stabilization): Offers reduced gyro assistance, allowing for more agile maneuvers while maintaining a degree of stability.
- Expert Mode (Manual Control): Disables gyro assistance, providing full manual control for advanced aerobatics and experienced pilots.
5.2. One-Key Return
The aircraft features a one-key return function. When activated, the plane will automatically turn around and fly back towards its takeoff point. Ensure the aircraft is at least 20m above the ground for optimal performance of this feature.
Video: This video demonstrates the process of connecting the aircraft battery and activating the flight system, including the one-key return feature. It shows the rudder moving left to right to confirm activation and the throttle sequence for unlocking the motor.
5.3. Basic Flight Controls
Use the left stick for throttle (power) and rudder (yaw). Use the right stick for elevator (pitch) and ailerons (roll). Practice gentle inputs, especially in beginner mode, to familiarize yourself with the aircraft's response.
6. Maintenance
6.1. EPP Foam Durability
The Fms PA-18 Super Cub is constructed from durable EPP foam, designed to withstand minor impacts. In case of damage, EPP foam can often be repaired using foam-safe glue.
6.2. Propeller Guard
The aircraft features a propeller guard design where the propeller is designed to pop off during impacts, protecting the motor and propeller from damage. Always ensure the propeller is securely reattached before flight.

Image: Close-up of the Fms PA-18 Super Cub showing the propeller saver design, which allows the propeller to detach on impact to prevent damage.
6.3. Battery Care
Always use the provided USB-C charger for the rechargeable battery. Do not overcharge or completely discharge the battery. Store batteries in a cool, dry place away from direct sunlight.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Aircraft does not respond to transmitter. | Unbound transmitter/receiver, low battery (aircraft or transmitter). | Ensure proper binding sequence. Charge/replace batteries. |
| Aircraft flies erratically or is unstable. | Incorrect flight mode selected, trim settings off, damaged control surface. | Switch to Beginner mode. Adjust trim. Inspect and repair control surfaces. |
| Propeller detaches frequently. | Normal operation during impacts (propeller saver design). | Reattach propeller firmly. Consider flying in less challenging conditions. |
| Short flight time. | Battery not fully charged, old battery, aggressive flying. | Ensure full charge. Replace old batteries. Fly more conservatively. |
8. Specifications
| Feature | Detail |
|---|---|
| Product Dimensions | 16.54 x 16.54 x 5.43 inches |
| Item Weight | 3.35 pounds |
| Item Model Number | FMS152R |
| Manufacturer Recommended Age | 16 years and up |
| Battery Type | Nonstandard Battery (USB-C rechargeable) |
| Flight Modes | 3 (Beginner, Intermediate, Expert) |
| Special Features | One-Key Return, Durable EPP Foam, Propeller Guard |
9. Warranty and Support
For warranty information and technical support, please refer to the official Fms website or contact your retailer. Keep your proof of purchase for any warranty claims.
Additional resources and FAQs may be available on the Fms Store on Amazon.





