Flex Aviator 40e Super PNP Instruction Manual

Introduction

Inspired by the iconic aircraft of the Golden Age of 1950s civilian aviation, the Flex Aviator is an extraordinary fantasy aircraft with a super-wide flight envelope, offering exceptional ease of handling for pilots of all levels -- from beginners to advanced experts.

New from Flex Innovations, the Aura 8 system features 6-axis stabilization and takeoff assist, making the Flex Aviator the ideal trainer. The computer-free design allows pilots to effortlessly switch between two distinct Aura flight profiles, transitioning seamlessly from a stable trainer to an advanced aerobatic machine.

Designed by World Champion Quique Somenzini, the Flex Aviator is as stunning in performance as it is in appearance. It also boasts the versatility to carry a wide range of battery sizes, giving you flexibility for longer flight times and various performance needs.

The experience of flying the Flex Aviator is truly unique -- a perfect blend of vintage design and modern innovation, delivering both thrill and ease in every flight.

For the latest updates, features, addendums and more, before assembly, please visit:

• https://www.flexinnovations.com/product/flex-aviator-40e-super-pnp/
• https://wiki.flexinnovations.com/wiki/Aura

Includes

• Flex Aviator 40e airframe with decals applied
• Aura 8 Advanced Flight Control System (programmed and ready to use)
• Dualsky ECO 3520C 510kv Brushless Motor
• 50A Hobby Wing ESC with 7.4v BEC
• (6) Potenza DS17HV Digital Sub-Micro Servos
• GemFan 13x6.5 2 Blade Plastic Propeller for Electric

Requires

• 6+ Channel computer transmitter
• Serial capable receiver to match your transmitter, e.g. Spektrum 4651T, Futaba R2001SB or FrSky Archer Plus RS.
• 6S 1800mAh - 3500mAh 40C+ Li-Po Battery
• 6S Li-Po capable battery charger

Specifications

Wingspan: 48 in. (1220mm)

Length: 59 in. (1500mm)

Weight: 4.6lbs (2080g) (RTF with recommended 6S 2200mAh battery)

Recommended battery: 1800mAh - 3500mAh 6S 45C+ Li-Po

Completion Items

• Dualsky ECO 3520C 510kv Brushless Motor (FPZMECO3520C-510)
• 50A Hobby Wing ESC with 7.4v BEC (HW50ABEC)
• Potenza DS17HV Digital Metal Gear Servo (FPZDS17HV)
• Aura 8 Advanced Flight Control System (FPZAURA08)
• GemFan 13x6.5 2 Blade Plastic Propeller for Electric

Replacement Parts Listing

Optional Items

Before You Begin

Special Language Definitions

• NOTICE: Procedures, which if not properly followed, create a possibility of physical property damage AND a little or no possibility of injury.
• CAUTION: Procedures, which if not properly followed, create the probability of physical property damage AND a possibility of serious injury.
• WARNING: Procedures, which if not properly followed, create the probability of property damage, collateral damage, and serious injury OR create a high probability of serious injury.

Age Warning

⚠️ AGES 14+ This is NOT a toy! This product is not intended for use by children under 14 years of age without direct adult supervision.

Attention

Read the ENTIRE instruction manual to become familiar with the features and assembly of the product before operating. Failure to assemble or operate the product correctly can result in damage to the product, personal property, and cause serious or fatal injury. All instructions, warranties and other collateral documents are subject to change at the sole discretion of Flex Innovations, LLC. For up-to-date product literature, please visit our website at www.flexinnovations.com and click on the Flex Aviator 40e and Aura 8 product pages.

Notices

[Notice] Do not use thread locker when attaching plastic parts, the parts will soften and fail.

The assembly of the Flex Aviator 40e can be accomplished in a few hours. Prior to assembling the airplane, it is advisable to charge your battery so that you are ready to begin radio setup upon completion of the assembly of your model.

Important Information Regarding Warranty

Please read our Warranty and Liability Limitations section before building this product. If you as the purchaser and/or user are not prepared to accept the liability associated with the use of this product, you are advised to return this product immediately, in new and unused condition, to the place of purchase.

Safety Warnings and Precautions

Protect yourself and others by following these basic safety guidelines.

1. This manual contains instructions for safety, operation, and maintenance. It is essential to read and follow all the instructions in the manual, prior to assembly, setup, or use, in order to operate correctly and avoid damage or serious injury. In some cases, the written instructions may differ slightly from the photos. In those instances, the written instructions should be considered correct.
2. This model is not a toy, rather it is a sophisticated remote control hobby product and must be operated with caution and common sense. This product requires some basic mechanical ability. Failure to operate this product in a safe and responsible manner could result in injury, or damage to the product, or other property.
3. This model must be assembled according to these instructions. Do not alter or modify the model outside of these instructions provided by Flex Innovations, LLC, as doing so may render it unsafe and/or un-flyable. You must take time to build straight, true, and strong. It is your responsibility to ensure the air-worthiness of this product.
4. Use only compatible, appropriate components for the final assembly of this model. Ensure that the radio system is in functional condition, that the motor is appropriately sized for the model and that all other components are appropriate for use in this model as specified in this Flex Aviator 40e Instruction manual. All components must be installed correctly so that they operate correctly both on the ground and in the air.
5. Inspect and check operation of the model and all its components before every flight.
6. If you are not an experienced pilot, or have not flown a high-performance model before, it is recommended that you seek assistance from an experienced pilot in your R/C club for your first flights. If you're not a member of a club, the Academy of Model Aeronautics (AMA) has information about clubs in your area whose membership includes experienced pilots.
7. Keep the propeller area clear from such items as loose clothing, jewelry, long hair, or tools, as they can become entangled. Keep your hands and body parts away from the propeller as injury can occur.

Important Before Assembly

• Carefully unpack your aircraft and inspect the parts. Review the manual and gather all the required tools and supplies.
• Remove all parts from their plastic bags, inventory all items and closely examine all the major airframe components for damage. If any items are missing or you find damaged components, do not proceed, please contact customer support.
• Use thin CA to go over any important glue joints, such as the motor box, firewall, servo mounting rails and any other pre-assembled joints that may see high stress during flight.
• Gather all required components such as motor and radio equipment that will be used to equip the airplane. Create a new radio program in your transmitter and bind this model program to the receiver that will be used in the airplane.

Battery Charging Guidelines

[Warning] Follow all instructions provided by your battery and charger manufacturer. Failure to comply can result in fire.

Flex Innovations recommends the use of an advanced LiPo balancing charger, such as the Spektrum Smart S2100 G2 AC 2X100W Charger for optimal performance and lifespan. The airplanes are designed around Potenza LiPo batteries, specifically the Potenza 6S 2200mAh 40C LiPo, which features an EC5 connector for plug-and-play use. These are available online at www.flexinnovations.com and local retailers.

Low Voltage Cutoff (LVC)

LiPo batteries have a nominal voltage of 3.7V per cell, reaching 4.2V when fully charged. Discharging below 3.0V per cell can cause damage and reduce capacity. For best battery life, set a timer to land with approximately 15% capacity remaining.

The HobbyWing 50A ESC includes a Low Voltage Cutoff (LVC) feature to protect the battery. It automatically reduces motor power when the battery voltage drops below 3.0V per cell (average), while still supplying power to servos for a safe landing. If the motor power drops rapidly during flight, land immediately as the LVC has been triggered.

Assembly

Main Landing Gear Installation

Required Tools and Fasteners: #2 Phillips Screwdriver, 1.5mm Hex Driver, (4) M3x10 Phillips Head Self-Tapping Screws, Blue Thread Lock.

1. Remove the landing gear cover from the fuselage.
2. Insert the landing gear into the fuselage, ensuring the wider side of the plastic fairing faces the rear of the fuselage.
3. Align the arrows, replace the landing gear cover, and secure it with four M3x10 Phillips head self-tapping screws using a #2 Phillips screwdriver.
4. Apply blue thread-locker to the set screw and install the inside collet onto the main landing gear shaft using a 1.5mm hex driver.
5. Slide the wheel onto the shaft.
6. Apply blue thread-locker to the set screw and install the outside collet onto the main landing gear shaft using a 1.5mm hex driver. Ensure the wheel spins freely and does not bind. Adjust collets if necessary.
7. Repeat for the other side.
8. Once complete, the installation should match the provided images.

Tailwheel Installation

Required Tools and Fasteners: #1 Phillips Screwdriver, (3) M2x6 self-tapping Phillips head cap screws.

1. Locate the vertical fin assembly, tail wheel, and retaining plate. Insert the tail wheel assembly into the bottom of the rudder, orienting the wire towards the tail, away from the fuselage.
2. Insert the retaining plate into the cavity on the bottom of the rudder. Secure it with three M2x6 self-tapping screws using a #1 Phillips screwdriver.

Vertical Stabilizer Installation

Required Tools and Fasteners: 30-Minute Epoxy, Craft Sticks, Mixing Cup, Paper Towels, #2 Phillips Screwdriver, (1) M3x10 Phillips Head Self-Tapping Screw.

1. Test fit the vertical fin to the fuselage, making any necessary adjustments. Mix 30-minute epoxy and apply it to the vertical fin and mating fuselage parts. Avoid applying epoxy to the hinges; a drop of oil or petroleum jelly on the pivot points can prevent accidental bonding.
2. Assemble the parts, wiping away excess epoxy. Confirm alignment and allow the epoxy to cure. This joint carries significant load, so epoxy is crucial for strength.
3. Temporarily insert the main wing tube to ensure the vertical stabilizer is perpendicular to it.
4. Once cured, install the rudder hinge screw using a #2 Phillips screwdriver. Deflect the rudder to check movement. Tighten the screw until the rudder just begins to bind, then loosen it by a quarter turn.

Horizontal Stabilizer Installation

Required Tools and Fasteners: #2 Phillips Screwdriver, (2) M3x10 Phillips Head Self-Tapping Screws.

1. Insert the horizontal stabilizer tube into the fuselage and center it.
2. Slide the left and right stabilizer halves onto the tube. Ensure the control horn faces the belly of the airplane.
3. If you have the night version, connect the LED lights in the horizontal stabilizers using the provided connectors.
4. Ensure the elevator joiner tabs are properly indexed and bring the two halves together. Do not force the stabilizer.
5. Use a #2 Phillips screwdriver and the two M3x10 self-tapping screws to secure each stabilizer half.

Main Wing Installation

Required Tools and Fasteners: None.

1. Remove the top hatch from the fuselage by pulling the latch forward and lifting.
2. Unlock the Flex Speed-lock wing locks by pulling the knob towards the fuselage center and sliding it upwards until it stops (raised/unlocked position).
3. Insert the main wing tube into the fuselage and center it.
4. Slide the left and right wing panels onto the tube. Servos and linkages are on the underside of the wing.
5. Connect the all-in-one servo lead to the receptacle in the wing.
6. For the night version, feed the red LED lead through the opening into the fuselage and connect the LED power leads.
7. Fully seat the wings into the fuselage, aligning the wing mounting tab with the slot. Avoid pinching wires.
8. Secure each wing by pushing down on the top aluminum rod of the Flex Speed-lock. The knob should seat properly in its notch when latched.
9. Replace the hatch onto the fuselage.

Flight Profiles and Flight Modes

The Flex Aviator 40e features the Aura 8 system with two flight profiles: the default Stock Profile (recommended for beginners to intermediate pilots) and the Expert Profile (recommended for intermediate to expert pilots). Profiles can be switched without a computer.

Stock Profile

This profile is ideal for beginners to intermediate fliers, offering three flight modes for learning to aggressive sport aerobatics. Not recommended for Slow 3D.

• Flight Mode 1: Level Assist (6 Axis - Gyro On): Beginner mode, self-leveling, limited bank/pitch angles, low rates, comfortable expo, low gyro.
• Flight Mode 2: Sport (3 Axis - Gyro On): General flight and basic sport aerobatics, low rates, comfortable expo, low gyro.
• Flight Mode 3: Advanced (3 Axis - Gyro On): General flight and aggressive sport aerobatics, Live Wing (flaps with ailerons), medium rates, comfortable expo, low gyro.

Take-off/Launch Assist

Can be enabled at the beginning of your flight, ideal for learning or challenging conditions. It keeps wings level and commands a climb-out.

Expert Profile

This profile is for intermediate to expert fliers, offering three flight modes for a wide spectrum of aerobatics, including 3D.

• Flight Mode 1: Sport (3 Axis - Gyro On): General flight and basic sport aerobatics, low rates, comfortable expo, low gyro.
• Flight Mode 2: Advanced (3 Axis - Gyro On): General flying and aggressive sport aerobatics, Live Wing (flaps with ailerons), medium rates, comfortable expo, low gyro.
• Flight Mode 3: Slow Speed 3D (3 Axis - Gyro On): For slow speed, 3D flight, Live Wing (flaps with ailerons), highest rates, comfortable expo, highest gyro setting (may oscillate).

Take-off/Launch Assist

Can be enabled at the beginning of your flight, ideal for learning or challenging conditions.

Profile Selection and Quick Trim

Quick-Flip: How to Switch Between Stock and Expert Profiles

Repeat the following steps to switch profiles:

1. Turn off the transmitter and unplug the airplane battery.
2. Connect the battery to power up the airplane. The Blue LED will flash for Gyro Calibration. Keep the model still with a nose-down attitude.
3. The Aura will detect the orientation and switch the profile. The elevator will move 3 times for Expert Profile or 6 times for Stock Profile.
4. Once elevator deflections complete, return the model to a level attitude and disconnect the battery.
5. Turn on your transmitter and connect the battery. Use your flight mode switch to verify the change.

Enable Take-off/Launch Assist Mode

This mode helps beginners or in challenging takeoffs by controlling roll and pitch for level wings and a brisk climb.

1. Hold transmitter sticks for 3 seconds: Throttle low, rudder centered, full left aileron, full up elevator. Keep the airplane still.
2. The elevator will go up, and ailerons will move to keep the model level. Return sticks to center.
3. If activation fails, ensure trims are centered and keep the model level and immobile for at least 6 seconds with sticks in the specified positions.
4. Once active, advance throttle and use rudder for steering. Do not move aileron/elevator sticks from center.
5. At a comfortable altitude, move aileron/elevator sticks to disable Take-off/Launch Assist and resume normal control.

First Flight and Quick Trim in 3-Axis Mode

Fly maiden flight using Flight Mode 2 (Stock) or Flight Mode 1 (Expert). Trim for straight and level flight. After landing, perform Quick Trim with the Flight Mode switch in the same position used for trimming.

1. Power off the Flex Aviator 40e. Insert a bind plug into Aura Port S3 (remove existing servo lead). Power on the transmitter and Aura.
2. Wait 5 seconds for initialization. Confirm Quick Trim mode by a slowly flashing Blue LED.
3. Remove the bind plug to save trims. The Blue LED will flash quickly.
4. Power off the Flex Aviator 40e and re-install the servo into Port S3.
5. Re-center all control surface trims on the transmitter.
6. Power on the Flex Aviator 40e; control surfaces should be unchanged.

First Flight and Quick Trim in 6-Axis Mode

Trim this mode separately. Fly using Flight Mode 1 (Stock). Trim for straight and level flight at 3/4 throttle. Perform Quick Trim as described above, starting with the Flight Mode switch in Flight Mode 1.

Transmitter Setup

The Aura 8 works with popular transmitter brands. Setup differs from models without Aura. Follow these steps:

1. Start with a new model memory in your transmitter and reset it to defaults.
2. Adjust transmitter settings according to the Transmitter Configuration Guide.
3. Make ONLY the changes shown in the guide.

Transmitter Configuration Guide

* The default Aura program has the Gyro Gain Kill Switch disabled and the Crow disabled. See page 24 for detailed instructions on using Quick Set to enable the Gyro Gain Kill Switch (Ch7) or Crow (Ch8).

[Notice] FOR CUSTOMERS USING TRANSMITTERS OTHER THAN WHAT IS LISTED IN THE CHART ABOVE, PLEASE VISIT OUR WIKI PAGE FOR INSTRUCTIONS SPECIFIC TO YOUR TRANSMITTER AND RECEIVER BRAND: HITEC - wiki.flexinnovations.com/wiki/Aura/HitecSbusUse

Receiver Installation

Choosing a Receiver

Aura auto-detects modern serial receivers. Only serial receiver connections can be used with the Aura 8 in the Flex Aviator 40e. Below are examples of compatible serial receivers:

• Spektrum SRXL: SPMAR6610T, SPMAR8020T, SPMAR10100T
• Spektrum SRXL2: SPM4651T, SPM4650
• Futaba S.Bus: Futaba R7008SB, R2001SB, R6202SBW
• FrSky S.Bus: TW Mini, Archer Plus RS
• Hitec S.Bus: Optima SL, Maxima SL
• Graupner HoTT (Sum D of 8): GR12L, GR16L
• JR XBus (Mode A & Mode B): RG012BX, RG613BX, RG821BX
• Jeti EX-Bus: REX10, R9 EX, REX6

Connecting Your Receiver to Aura

Serial Receivers

Connect a standard serial receiver to Aura Port B using the provided male-to-male cable, noting polarity. SRXL2 receivers like the 4651T may require a specific cable (included with receiver or available at flexinnovations.com, FPZA1039). Other receivers like AR6610T use a standard servo port for SRXL2 signal.

[Notice] If using Futaba S.Bus, use the proper S.Bus port. DO NOT use the S.Bus2 port, as it is not supported. Refer to manufacturer's instructions.

[Notice] When using Spektrum SRXL or SRXL2, connect remote receivers to the Spektrum receiver, NOT to the Aura.

Binding Your Receiver

Bind your receiver to your transmitter per manufacturer instructions.

Binding Your DSMX Remote Receivers

1. With transmitter and aircraft OFF, place a bind plug into Aura Port S8.
2. Power on the aircraft. Remote receivers should flash rapidly, indicating bind mode.
3. Bind your transmitter to the remote receivers per your transmitter's instructions (e.g., hold bind button while powering on transmitter).
4. Verify binding by checking the LED on the remote receivers (typically solid orange for Spektrum).
5. Remove the bind plug from Aura Port S8.

Aura 8 Auto-Detect

Before powering up for the first time, ensure no trim or sub-trim is active on main channels. Once the receiver is bound and connected, Aura will auto-detect the receiver type and configure itself. Auto-Detect is indicated by sweeping LEDs. Verify Aura is on and receiving data by checking the Aura LEDs.

• Ready-To-Fly: Solid Orange LED: Aura On and Calibrated. Solid Green LED: Aura receiving Valid receiver data.
• Possible Errors: Flashing Orange LED: Aura Moved During Power Up. No Green LED: Aura NOT receiving receiver data.

Aura 8 Servo Connections

Default Aura Connections:

• S1 - Throttle
• S2 - Left Aileron
• S3 - Right Aileron
• S4 - Elevator
• S5 - Rudder
• S6 - Left Flap
• S7 - Right Flap
• S8 - Water Rudder (optional, with floats)
• Port B - Serial Receiver Input
• Mini Port A&B - DSMX Remote Receiver Inputs

Connecting Battery/Arming ESC

Follow these procedures to safely power up your model after binding. Ensure the propeller is removed unless powering up for flight.

1. Turn on the transmitter. Lower the throttle stick AND throttle trim to their lowest settings. Wait for the transmitter to indicate the radio signal is broadcasting.
2. Ensure aileron, elevator, and rudder gimbals are centered.
3. Connect the battery to the ESC. The ESC will emit initialization tones.
4. A final tone sequence indicates the ESC is armed and the motor will spin in response to throttle stick movement.

[Warning] When making adjustments to linkages, transmitter settings, or the Aura 8 flight control system, remove the propeller to guard against accidental spool up.

[Caution] Always connect the battery when the throttle stick and throttle trim are in the idle/cut-off position.

[Warning] Hold aircraft securely when connecting the battery before flight. Always ensure that the propeller is clear of any and all objects as they may become entangled.

ESC Throttle Calibration

Calibrate the ESC to map the full range of its output to your throttle stick motion. Perform with propeller and spinner removed.

1. Power on your transmitter. Disable any throttle hold/kill switches. Lower the throttle trim completely and set the stick to full throttle.
2. Connect the flight pack to your Flex Aviator 40e.
3. Listen for two tones from the ESC/motor about 2 seconds after RF engagement.
4. Pull the throttle stick back to idle.
5. Listen for the ESC arming tones from the motor.
6. Unplug the flight battery to complete calibration.

The ESC throttle range is now calibrated and stored. This process can be repeated as needed.

[Caution] Note: After throttle calibration, reset the failsafe on your receiver (refer to your radio documentation; may require re-binding).

Rudder and Elevator Linkage Installation

Required Tools and Fasteners: Elevator and Rudder Pushrod Assemblies, (4) M2x10 Phillips Head Machine Screws, (4) M2 Flat Washers, (4) M2 Lock Nuts, (2) M3x6 Phillips Head Machine Screws, #1 Phillips Screwdriver, #2 Phillips Screwdriver, Needle-Nosed Pliers (or Hemostats), 4mm Socket Hex Driver (optional), Blue Thread Lock.

1. Locate rudder and elevator pushrod assemblies, servo arms, and hardware. Note that pushrods and servo arms are the same length, but the elevator servo arm has the linkage installed one hole closer to the servo output shaft.
2. Power on your transmitter. Ensure the airplane is stationary during linkage adjustment to prevent incorrect servo/linkage geometry. Verify all connections are correct with the airplane powered on a firm surface and no movement.
3. With the aircraft powered on, install the rudder and elevator servo arms perpendicular to the servo case, oriented towards the bottom of the fuselage. Apply blue thread lock to the M3x6 Phillips head machine screw and secure the servo arm using a #1 Phillips screwdriver.
4. Use a #1 Phillips screwdriver, M2x10 machine screw, M2 washer, and M2 lock nut to secure the linkage to the control horn and servo arm. DO NOT use thread lock, as it can damage plastic nuts or control horns. Refer to the chart on the next page for proper linkage locations. Note correct elevator positioning details on the next page before finalizing elevator linkage length. Component order: M2x10 Machine Screw, M2 Washer, Servo Arm or Control Horn, M2 Lock Nut.
5. Repeat for the other control linkage.

Linkage Setup

Mechanically adjust control linkages so surfaces are neutral with zero trim and sub-trim in your radio. Final trim adjustments may be needed during flight (refer to page 13). Ball links are used on all control surfaces.

At the servo, use the third hole from the outside on the servo arm for rudder and flaps, and the fourth hole for the elevator. At the control horn, use the outermost hole for both elevator and rudder.

[Notice] The DS17HV servos have high resolution and a fine tooth count output shaft. Servo arms may appear misaligned but are properly installed. Ensure positive, perpendicular orientation of the arm to the case for even servo travel.

Elevator Trim

The Flex Aviator requires a small amount of up elevator trim to fly level. This is approximately 3mm at the counterbalance, as shown in the pictures. Use this as a starting point for linkage setup and adjust with quick trim after the maiden flight.

Night Flex Aviator 40e LED Connections

This section applies if you purchased the Night version. If not, skip ahead.

[Notice] For the night version, dry assemble the airframe and test all lights before permanent bonding.

1. Connect the provided connector for each horizontal stabilizer half.
2. Connect the LED connectors for each wing panel (under the top hatch) to the provided leads, routing them through the fuselage opening.
3. If using floats with lights, connect each float set connector to the provided connector on the fuselage bottom. Refer to the float installation manual for details.
4. The main light controller is located under the battery hatch; plug in the LED battery pack here.

Connecting a Battery to the LED Controller

LEDs are transmitter-switchable and powered by 12 volts (3S Li-Po) via the 6S JST-XH balance tab on the LED controller. The controller is unplugged by default. If the servo lead is not plugged into Aura or a receiver, the controller defaults to the ON position, allowing night flight with a basic 6-channel transmitter/receiver.

[Notice] To control LEDs from the transmitter, use a 7+ channel receiver capable of keeping servo ports active with digital data streams (S.Bus, SRXL, etc.).

[Warning] You MUST use an independent 3S Li-Po battery to power the LEDs. Failure to do so can damage your flight batteries. Recommended: Potenza 3S 500mAh 25C Li-Po (FPZB5003S25).

[Warning] Do not leave the battery plugged into the LED controller for extended periods, as this can damage the battery. Average current draw for the lighting system is 2.2A/h.

Control Direction Test

Refer to the chart to determine proper control surface directions. If movement is reversed but the Sensor Direction test passed, reverse the input in your transmitter or Aura Config Tool. Both Transmitter Control Direction Test AND Flight Controller Sensor Direction Test MUST BE PASSED. If either fails, DO NOT FLY.

Note: Pre-configured rudder-to-aileron and rudder-to-elevator mixing is programmed into the Aura. Simultaneous movement of these surfaces with rudder input is intentional and normal.

Aura Sensor Direction Test

Test the gyro system to verify corrections. If tests do not yield correct reactions, DO NOT FLY and contact support@flexinnovations.com. Perform these tests in high gain Flight Mode 3 (or 6 Axis Level Assist) for better visibility. Aura must have a Solid GREEN LED to perform this test.

Note: Control surface deflections are exaggerated for clarity. Surfaces move ONLY WHILE the aircraft is being ROTATED for 3 Axis Control Modes.

Motor Prop Adapter Installation

Required Tools and Fasteners: Prop Adapter Assembly, 2mm Hex Driver, Blue Thread Lock.

1. Locate the motor prop-shaft assembly.
2. Use a 2mm hex driver and blue thread-lock to attach it to the front of the motor using the five provided screws.

Propeller/Spinner Installation

Required Tools and Fasteners: #2 Phillips Screwdriver, 13mm Box Wrench or adjustable wrench.

1. Install the propeller on the prop adapter with the convex surface facing forward. Propeller size numbers are printed on the front face and should orient forward.
2. Slide the prop washer onto the prop adapter (widest face aft), followed by the propeller nut. Tighten the propeller nut fully.
3. Slide the spinner over the prop and prop shaft and secure it using the M3X6mm machine screw.

[Notice] Spin the motor by hand to ensure the prop and spinner spin smoothly and true after installation.

Battery Installation

1. Push the spring-loaded battery latch tab back to release the battery hatch. Lift the hatch away from the fuselage, starting at the front.
2. Install the hook side of adhesive-backed hook and loop tape to the plywood battery tray in the fuselage, and the loop side to your battery.
3. Place the battery on the tray and secure it with the hook and loop strap. The tray is removable to aid this process.
4. Reinstall the hatch and confirm the latch has positively engaged.

[Caution] Always keep limbs clear from the propeller when the battery is connected. Electric motors apply more voltage to counteract resistance, potentially causing severe damage to entangled objects.

[Warning] When making adjustments to linkages, transmitter settings, or the Aura 8 flight control system, remove the propeller to guard against accidental spool up.

Center of Gravity (CG)

Setting the CG is crucial for successful flight. The Flex Aviator 40e is capable but difficult to control if the CG is not within the acceptable range.

Prepare the aircraft to its flight-ready state with all components installed. The CG is measured from the trailing edge of the main wing toward the nose. Lift the aircraft upright at the noted CG location.

The acceptable CG range is 77mm to 85mm (3 1/32 inches to 3 11/32 inches) measured perpendicular from the leading edge of the wing. The Sport CG (77mm) is considered the sweet spot by designer Quique Somenzini.

[Notice] The CG measurement must be made with the completed airframe and all components installed. Failure to do so will result in inaccurate measurement.

CG Range: SPORT 77mm (3 1/32 in.) OR AEROBATIC 85mm (3 11/32 in.)

Pre-Flight Checklist

Perform these checks for successful flights:

1. Verify hinges on ailerons, flaps, elevators, and rudder are properly hinged and working. Pinch control surfaces and check for movement. If loose, apply Foam-Cure or 15/30 minute Epoxy (avoiding pivot points). DO NOT apply thin CA to pin hinges. Ensure hinges move freely.
2. Verify control surfaces move freely when disconnected from the servo. For tight pin hinges, apply a small drop of light oil to each hinge pivot and work it in.
3. Verify all hardware and parts are securely fastened, including those requiring blue thread lock.
4. Verify battery is fully charged and in good condition. Avoid batteries with swollen cells or those that do not hold a full charge.
5. Verify CG is in the proper location and the battery is secured.
6. Ensure Aura is on and functioning properly. Power on transmitter, then aircraft. Verify Aura calibration and valid radio source (solid orange + solid green LEDs).
7. Verify transmitter stick inputs result in proper control surface movements (page 20) and flight modes work correctly.
8. Verify aircraft movement results in proper Aura sensor corrections (page 21).
9. Verify motor and ESC function properly. Point the aircraft safely, hold firmly, advance throttle to full, then to idle. Watch/listen for unusual behavior.

Figure 1 - Test for hinge movement and loose hinges [Diagram description: Two arrows indicating opposing forces applied to a control surface to test hinge movement.]

AMA Safety Code

Flex Innovations recommends following the guidelines set by the Academy of Model Aeronautics (AMA). Find safety handbooks and information at www.modelaircraft.org.

Flex Aviator 40e Aura Optional Quick Set Procedure

The Aura features a Quick Set feature for adjusting options without a computer.

• Gyro Gain Kill switch: Can immediately kill Gyro Gain in emergencies (e.g., Aura unmounting).
• Crow Mode switch: Activates Crow Mode (Butterfly) for air brakes (ailerons up, flaps down). Requires minimum 8-channel transmitter. For switchable Night LED setup with Crow, a 9-channel transmitter is needed.

Flex Aviator 40e Optional Feature Transmitter Setup

• CH 7 (Aux 2): Gyro Kill Switch (Optional) → Assign to 2-position switch
• CH 8 (Aux 3): Crow Switch (Optional) → Assign to 2-position switch
• Flight Modes are as described on page 12.

Quick Set Procedure

1. Ensure all power is off. Remove the prop.
2. Turn on your transmitter.
3. Remove the servo lead from Aura Port S2.
4. Install a bind plug in Aura Port S2.
5. Plug in the motor battery to power up the Flex Aviator 40e.
6. After entering Quick Set mode, the Orange LED will be off, and the Green LED will be SOLID. Blue LEDs will also be off.
7. To enable/disable Gyro Gain Kill switch, toggle the CH7 switch on your transmitter. Blue LED ON = ENABLED, Blue LED OFF = DISABLED.
8. To enable/disable Crow Mode switch, toggle the CH8 switch on your transmitter. Red LED ON = ENABLED, Red LED OFF = DISABLED.
9. After setting options, remove the bind plug to save settings. LEDs will briefly flash.
10. Completely power off the Flex Aviator 40e and Aura.
11. Replace the servo lead in Aura Port S2.
12. Power up and fly with updated Aura settings!

This process can be repeated to enable/disable features.

Flying Your Flex Aviator 40e

Selecting a Flying Site

Choose a flying site that is critical for successful flight. Large open fields with short grass and generous overfly areas are ideal. Avoid neighborhoods or parking lots. Know your overfly area to ensure no houses, playgrounds, or buildings are at risk.

[Notice] As a reminder, information on switching profiles, enabling Take-off/Launch Assist, and performing Quick Trims can be found on page 13.

Takeoff

Place the aircraft on the runway centerline, nose into the wind. Select Flight Mode 1 and set throttle trim for lowest RPM without stopping. Smoothly advance throttle to full, maintaining directional control with rudder and slight back pressure on elevator. The airplane should lift off smoothly before full throttle. Fly in Flight Mode 1 until trimmed and comfortable, then explore other modes.

Flying

Maintain altitude on the first flight. Climb to a safe altitude and trim the airplane for straight and level flight at 2/3 to 3/4 power. Try basic maneuvers and progress into the flight envelope as you become comfortable. If unexpected control inputs or oscillations occur, switch to Flight Mode 1, reduce speed, land, and troubleshoot.

Landing

Be mindful of flight time and reserve battery for go-arounds. Select Flight Mode 1, slow the airplane, and align with the runway into the wind. Descend smoothly with proper airspeed. Close throttle fully near the ground and apply up elevator to arrest descent for a gentle touchdown with a short roll out.

[Caution] USE CAUTION WHEN FLYING YOUR FLEX AVIATOR 40E IN MODE 3 AT HIGH AIRSPEEDS. DOING SO WILL INDUCE CONTROL SURFACE OSCILLATIONS AND MAY CAUSE A CRASH.

Airframe Repairs

The Flex Aviator 40e is made of durable EPO foam and is repairable with most adhesives. Epoxy is preferred for major repairs (e.g., broken fuselage) for alignment time. Regular CA is effective for smaller repairs (cracked control surface, missing material). Odorless (foam safe) CA is not required and not recommended as it cures slower and bonds weaker.

[Notice] Avoid CA accelerant, as it can damage paint and weaken bonds. Be mindful of CA placement to prevent premature bonding.

If a part is too damaged to repair, refer to page 3 for spare parts.

[Warning] Do not use thread locker on any metal-to-plastic connection (e.g., push rods to servos, control horns). It weakens plastic, voids warranty, and can cause crashes.

[Notice] If a crash is imminent, reduce throttle to prevent further damage. Never let the propeller contact the ground under power. CRASH DAMAGE IS NOT COVERED UNDER ANY PRODUCT WARRANTY.

[Notice] Avoid keeping the airplane in direct sunlight when not flying. Excessive heat can damage structure, and UV damage can discolor decals.

Replacing Servos

Required Tools and Fasteners: #1 Phillips Screwdriver.

1. Disconnect the servo from the Aura 8.
2. Unscrew the servo arm from the servo and remove it.
3. Unscrew the two servo mounting screws at each end of the servo and remove. Note that some servos may be connected to a servo extension; leave this extension in place.

Aircraft Troubleshooting Guide

Refer to the table below for probable causes and recommended solutions for abnormal situations. If the issue persists, contact product support at support@flexinnovations.com.

[Notice] Unless specifically required, ALWAYS troubleshoot the airplane with the propeller removed.

Limited Warranty

Warranty Coverage

Flex Innovations LLC warrants the original purchaser that the Product will be free from defects in materials and workmanship at the date of purchase.

Outside of Coverage

Warranty does not cover: products over 45 days old, damage from acts of God, accident, misuse, abuse, negligence, commercial use, improper installation/operation/maintenance, damage to other components, modifications, products not purchased from authorized dealers, partially/fully assembled products, shipping damage, cosmetic damage, or services/labor for repair/use/assembly.

Flex disclaims all implied warranties, including merchantability and fitness for a particular purpose. The purchaser acknowledges they have determined the product's suitability for their intended use.

Purchaser's Remedy

Flex's sole obligation is to service, replace any defective part, or replace the Product at Flex's option. Proof of purchase is required. Service or replacement decisions are at Flex's sole discretion.

Limitation of Liability

FLEX SHALL NOT BE LIABLE FOR SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES. Flex's liability shall not exceed the individual price of the Product. Flex assumes no liability for damage/injury resulting from use, setup, assembly, modification, or misuse. By using the product, the user accepts all resulting liability.

Law

These terms are governed by Florida law. This warranty gives specific legal rights, which may vary by state. Flex reserves the right to modify this warranty at any time without notice.

Questions & Assistance

• E-Mail: support@flexinnovations.com
• Phone: 1 (866) 310-3539

Inspection or Services

Contact your regional Flex authorized reseller for inspection or service. Pack the Product securely in the original shipping carton (inner and outer boxes). Ship via a carrier providing tracking and insurance.

Warranty Requirements

Include original sales receipt for warranty consideration. Flex covers return shipping costs for defective parts/products. Customer is responsible for shipping to Flex.

Compliance Information for the European Union

Declaration of Conformity

Product(s): Flex Aviator 40e Super PNP. Item Number(s): FPM5570A, FPM5570B, FPM5580A, FPM5580B. Declares conformity with EMC Directive 2004/108/EC and listed EN standards.

Instructions for disposal of WEEE by users in the European Union

This product must not be disposed of with other waste. Users must hand over waste equipment to designated collection points for recycling. This helps conserve natural resources and protect human health and the environment. Contact local authorities for disposal information.

Building and Flying Notes

[Diagram description: A simple line drawing of an airplane.]