Spektrum FC6250HX User manual

FC6250HX Helicopter FLYBARLESS System
FC6250HX Hubschrauber mit FLYBARLESS-System
Système SANS BARRE STABILISATRICE pour hélicoptère FC6250HX
Sistema per elicottero FLYBARLESS FC6250HX
Updated 09/22 62400.1

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NOTICE
All instructions, warranties and other collateral documents are subject to
change at the sole discretion of Horizon Hobby, LLC. For up-to-date product
literature, visit horizonhobby.com or towerhobbies.com and click on the
support or resources tab for this product.
Meaning of Special Language
The following terms are used throughout the product literature to indicate
various levels of potential harm when operating this product:
WARNING: Procedures, which if not properly followed, create the probability
of property damage, collateral damage, and serious injury OR create a high
probability of superficial injury.
CAUTION: Procedures, which if not properly followed, create the probability
of physical property damage AND a possibility of serious injury.
NOTICE: Procedures, which if not properly followed, create a possibility of
physical property damage AND a little or no possibility of injury.
WARNING: Read the ENTIRE instruction manual to become familiar
with the features of the product before operating. Failure to operate
the product correctly can result in damage to the product, personal property
and cause serious injury.
This is a sophisticated hobby product. It must be operated with caution
and common sense and 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. This product is not intended for
use by children without direct adult supervision. Do not attempt disassembly,
use with incompatible components or augment product in any way without
the approval of Horizon Hobby, LLC. This manual contains instructions for
safety, operation and maintenance. It is essential to read and follow all the
instructions and warnings in the manual, prior to assembly, setup or use, in
order to operate correctly and avoid damage or serious injury.
Age Recommendation: Not for children under 14 years. This is not a toy.
WARNING AGAINST COUNTERFEIT PRODUCTS: Always purchase
from a Horizon Hobby, LLC authorized dealer to ensure authentic
high-quality Spektrum product. Horizon Hobby, LLC disclaims all support and
warranty with regards, but not limited to, compatibility and performance of
counterfeit products or products claiming compatibility with DSM or Spe-
ktrum technology.
NOTICE: This product is only intended for use with unmanned, hobby-grade,
remote-controlled vehicles and aircraft. Horizon Hobby disclaims all liability
outside of the intended purpose and will not provide warranty service related
thereto.

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SPMFC6250HX
Type FC6250HX Helicopter Flybarless System
Dimensions (L × W × H) 42.5 x 24 x 13.6mm (1.67 x 0.94 x 0.54in)
Weight 13g (0.46oz)
Voltage Range 4.8V – 8.4V
Introduction
The Spektrum™ FC6250HX flight controller is the heart of your radio control
helicopter experience. As a 3-axis stability system for your flybarless helicopter,
the FC6250HX can be set up and tuned using your Spektrum transmitter
as a forward programming interface. All the flight controller settings can be
programmed through your transmitter. Using AS3X and SAFE technology, the
FC6250HX offers self-leveling beginner modes, as well as pro-level flight
performance.
Add a Spektrum Smart ESC to your heli to further expand integrated features
with no extra wires or sensors. When the flight controller detects a Smart ESC
connection, it feeds a telemetry stream to the transmitter, putting live battery
data power into your hands.
The FC6250HX can also be programmed, updated, and backed up using
the Spektrum USB Programmer and PC programmer application. Visit the
SPMFC6250HX product page at HorizonHobby.com for more information.
Features
• Supports two DSMX remote receivers
• User configurable SAFE Panic Recovery and Stability Flight Modes
• Easy to use Forward Programming for setup and gain adjustments from
compatible Spektrum Transmitters
• Smart Technology ready for Smart ESC and Smart Battery telemetry
• Supports DX, iX, and NX series transmitters
• Supports Digital and Analog servos
• 70Hz to 560Hz Adjustable Servo Frequency (760μs and 1520μs center)
Contents
• (1) Helicopter Flybarless Control System (SPMFC6250HX)
• (1) DSMX SRXL2 Serial Receiver with Telemetry (SPM4651T)
• (1) 4-Pin ZH to 3-Pin Servo Connector
• (1) 3-Pin Male to 3-Pin Male adapter
• (1) Product Manuals (SPMFC6250HX and SPM4651T)
• (2) Gyro Mounting Pad (SPMA3032)
FC6250HX to 4651T Cable
4651T Update Cable

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Optional DSMX Remote Receiver
We recommend an additional non-
telemetry DSMX remote receiver connected
to the side port labeled RX1 when flying
models with blades longer than 360mm.
For information on binding remote receivers
without a bind button, refer to the section
titled Binding with Optional Second Remote Receiver.
IMPORTANT: Always ensure the remotes are connected to the transmitter
before flying the model. A solid orange LED on each remote receiver indicates
a successful connection.
Remote Receivers
The FC6250HX flight controller uses a SRXL2™ Telemetry Remote to access
Forward Programming as well as other Smart features. Connect the 4651T
using the supplied cable to the BND/PRG/RX2 port as shown. The side port
labeled RX2 cannot be used when the BND/PRG/RX2 port is in use.
Installation
1. The FC6250HX flight controller must be attached to the airframe with
the servo connector block facing either forward or aft. The side of the
FC2650HX facing the main rotor disc must be parallel to the rotor disc.
2. Use one mounting pad (SPMA3032) to secure the FC6250HX to the
airframe.
NOTICE: Do not connect the swash plate, throttle or tail rotor servos until
the servo frequency has been configured. Failure to do so may result in
damage to the servo and/or your model.
4651T
Port 2
Port 1
Normal
ESC
ESC Connection
WARNING: Always remove the pinion gear or disconnect the main
drive motor from the ESC to disengage the drive system during
initial setup. The main rotor blades may turn in response to setup changes or
transmitter inputs. Failure to do so could result in serious personal injury or
property damage.
Connect your ESC to the flight controller.
Conventional ESCs (PWM signal)
connect to Port 1.
Spektrum Smart ESCs must be
connected to Port 2 to enable Smart
ESC Telemetry.

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Before You Get Started
The FC6250HX flight controller is setup, programmed, and tuned via the
Forward Programming menu on a compatible aircraft Spektrum radio
system.
Visit spektrumrc.com for a list of Forward Programming capable transmitters
and updated transmitter firmware.
• Before entering Forward Programming, engage Throttle Hold.
• Before exiting Forward Programming, lower the throttle to the full stop
position.
• Always exit forward programming before disconnecting the power source
to ensure parameters are saved.
Red, green, blue rapid blinking Initialization complete
Slow green strobe Normal operation
Slow red strobe Failsafe
Rapid red flash when exiting forward
programming Throttle not low; not in Normal/Hold
Slow cyan strobe Forward programming mode
LED Indications
Setup
1. In your transmitter, create a new heli setup as a Normal swash plate type.
Set the Frame Rate to 11ms.
The FC6250HX requires the default new model transmitter configuration.
All channels, other than throttle, must have Reversing set to Normal.
All channels, other than throttle, must have the Subtrim set to 0.
All channels, other than throttle, must have the Travel set to 100/100.
All throttle channel settings occur in the following setup procedures within
the transmitter. If you are using a throttle servo do not connect the servo
until you reach the throttle setup step below.
Configure your desired flight modes, throttle curves and pitch curves per
the respective manufacturer recommendations for the Helicopter, ESC,
Engine, and Transmitter. Note, servo settings pertaining to the cyclic,
collective and tail rotor are included in the FC6250HX setup.
Within your transmitter, enable the Transmitter Gyro function and select
the“Flight Mode Switch” option. Set each flight mode gain to 75% to start.

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2. If you are using a remote receiver without a bind button see the section
Binding with Optional Second Remote Receiver for more information.
Power ON the FC6250HX flight controller and press the bind button on
each remote. The remote will begin flashing, indicating it is ready to bind.
Lower the throttle stick to the stop position on the transmitter, and enter
bind mode.
Once the binding process is complete, the remote receiver LED turns solid
orange, indicating the remote receiver is bound and connected to the
transmitter.
The FC6250HX LED will begin flashing green, indicating a successful bind.
A red flashing LED indicates binding is not successful. Begin the binding
procedure again.
3. In the transmitter menu, select Forward Programming.
The transmitter connects to the flight controller, and a menu displays.
4. Navigate to the SetupSwashplateOutput Setup menu.
5. Set the Frame Rate to the operating frequency specified by your servo
manufacturer.
6. Select the Type menu. Set the swashplate type to match your helicopter’s
configuration. Connect the servos as shown on the transmitter and the
following connection diagram.
Select Back, and navigate to the Direction menu.
7. Set the servo reversing to ensure that the positive collective pitch stick
moves the servos in the direction of positive collective.
Select Back to return to the previous menu.
8. Select the Sub Trim menu. The swashplate servos move to the center
position. Use the sub trim adjustments to ensure the servos are level.
Before exiting the menu, ensure the main rotor blades are at 0 degrees
collective and the swashplate is level in the roll and pitch axis.
Select Back twice to exit the SwashplateOutput Setup menu.
9. Select the AFR menu. Verify that the roll and pitch cyclic are moving in the
correct direction by moving the cyclic stick.
To reverse an axis, edit the axis value and invert the sign. Once the
directions are correct, center the collective stick on the transmitter.
SMART ESC
ESC in Port 2
Normal ESC
Servo A
Servo B
Servo C
ESC in Port 1
Servo A
Servo B
Servo C

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10. Place a pitch gauge on a main rotor blade and zero it out.
• Align the blade with the roll axis, apply full right cyclic, and adjust the
AFR until your pitch gauge reads 12.5.
• Align the blade with the pitch axis and zero the pitch gauge. Apply full
aft cyclic, and adjust the AFR until your pitch gauge reads 12.5.
11. Adjust the Collective AFR to set your desired collective pitch range.
Remove the pitch gauge.
Select Back twice to return to the Setup menu. The swashplate setup is
complete.
12. Navigate to the TailrotorOutput Setup menu.
13. Set the Frame Rate to the operating frequency specified by your tail rotor
servo manufacturer.
14. Connect the tail rotor servo to Slot 5 and navigate to the Direction menu.
Move the tail rotor stick on the transmitter to the right and ensure the
tail rotor servo is moving the correct direction. If not, reverse the channel
direction on the FC6250HX.
Select Back to return to the previous menu.
15. Select Subtrim to center the tail rotor servo.
Select Back to return to the previous menu.
16. Select the Travel menu.
• Select Left travel. Hold the transmitter tail rotor stick full left, and
adjust travel to ensure full travel and that no binding occurs.
• Select the Right travel. Hold the transmitter tail rotor stick full right,
and adjust travel to ensure full travel and that no binding occurs.
TIP: 90% to 100% is recommended to achieve optimal flight
performance.
Press Back twice to return to the Setup menu. Tailrotor setup is complete.
WARNING: Always remove the pinion gear or disconnect the main
drive motor from the ESC to disengage the drive system during
initial setup. The main rotor blades may turn in response to setup changes or
transmitter inputs. Failure to do so could result in serious personal injury or
property damage.
Tail Rotor Servo

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17. Exit Forward Programming. Configure the throttle settings according to
the instructions provided by your ESC or Internal Combustion Engine and
Transmitter manufacturer.
18. Once throttle setup is complete, enter Forward Programming mode, and
select the SetupThrottleFailsafe menu.
19. Lower the throttle stick to the full stop position, and select Capture to
record the throttle failsafe position.
Select Back to return to the SetupThrottle menu.
20. Select ThrottleHover
This setting is the throttle point where your model hovers in normal mode,
mainly during takeoff and landing. The flight controller applies special
anti roll over algorithms at or below the throttle setting, helping to make
takeoffs and landings easier. The Stunt 1 and Stunt 2 throttle curves
should be above the hover throttle setting to ensure the roll over mitigation
is disabled in flight.
During the initial setup, you can set ThrottleHover to a high value
and test the model. Once the throttle setting is determined for hovering in
normal mode, set the Hover Throttle value.
Select Back to return to the Setup menu.
21. Select the Gyro SettingsOrientation Menu, and set the mounting ori-
entation to match the FC6250HX mounting orientation on your helicopter.
Once complete, physically move the helicopter on each axis to ensure the
gyros are compensating in the correct direction.
With firmware version 5.5 or newer the system will ask you to perform the
sensor calibration after setting the sensor mounting orientation. Level the
side of the FC6250HX that faces upwards and select Apply to complete
the sensor calibration step.
With firmware version 5.4 or earlier the calibration step after changing the
sensor orientation is not necessary.
Select Back twice to return to the Setup menu.
22. Select the FM Channel and select Inhibit. After initial test flights, if you
would like to use individual gains per flight mode, set the FM Channel
within the Setup menu.
23. The Gain Channel defaults to the gear channel. This is the transmitter
aux gyro gain channel for the tail rotor.
24. Press Back to exit the forward programming menu, and save the param-
eters.
The FC6250HX flight controller setup is complete.

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Operation
Preflight Checklist
❏Inspect the model, wiring, and electrical components.
❏Activate Normal Flight Mode on the transmitter.
❏Activate Throttle Hold on the transmitter. Lower the throttle to stop or
idle.
❏Power ON the transmitter.
❏Power ON the model, and wait for initialization to complete.
❏Complete the tailrotor and cyclic tests.
❏Connect the flight pack to the ESC (electric models).
❏Verify that all connected remote receivers display a solid orange LED.
❏Confirm that the transmitter roll, pitch, yaw and collective inputs cor-
respond to the helicopter controls.
❏Confirm that the FC6250HX is compensating in the correct direction.
❏Review all operational instructions before flying your model.
❏Place the model on a level surface for take off.
Postflight Checklist
❏Disconnect the flight battery (electric models)
❏Power down the FC6250HX
❏Always turn the transmitter off last
Telemetry Flight Log
The transmitter telemetry flightlog will provide the following information.
NOTICE: After a flight, if frame losses higher than 30 occur, evaluate the
remote receiver positioning and ensure the antennas have a clear signal
path to the transmission signal.
To help troubleshoot frame losses and holds, use the Range Test reduced
power function within your transmitter. Review your transmitter manual for
additional instructions.
RX1 Fades
RX2 Fades
FC6250MHX Generated
Telemetry
Number of Remote
Receivers Connected
Total Fades
Total Holds

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Gain Adjustment
The main Forward Programming displays flight control adjustments under
Swashplate and Tailrotor.
Tip: Adjust gains per flight mode by setting the SetupFM Channel:
Function in the setup menu. Set the Channel Input Config in the transmitter
for the selected channel to Flight Mode.
After the tail gains are fairly close, use the transmitter gyro gain function to
adjust the gain for each flight mode.
1. Cyclic P Gain Adjustment (Default 50%)
Higher gain will result in greater stability. Setting the gain too high may
result in random twitches if your model has an excessive level of vibration.
High frequency oscillations may also occur if the gain is set too high.
Lower gain will result in less stability. Too low of a value may result in a less
stable model, particularly outdoors in winds.
If you are located at a higher altitude or in a warmer climate, higher gains
may be beneficial—the opposite is true for lower altitude or colder climates.
2. Cyclic I Gain Adjustment (Default 50%)
Higher gain will result in the model remaining still, but may cause low
frequency oscillations if increased too far.
Lower gain will result in the model drifting slowly.
If you are located at a higher altitude or in a warmer climate, higher gains
may be beneficial—the opposite is true for lower altitude or colder climates.
3. Cyclic D Gain Adjustment (Default 7%)
Higher gain will improve the response rate of your inputs.
If the gain is raised too much, high frequency oscillations may occur.
Lower gain will slow down the response to inputs.
SMART Technology Telemetry
Spektrum SMART Technology provides telemetry information including battery
voltage and temperature.
A firmware update for your transmitter may be required.
To view SMART Telemetry:
1. The SMART Logo appears under the battery logo on the home page. A
signal bar appears in the top left corner of the screen.
2. Scroll past the servo monitor to view SMART technology screens.
For more information about compatible transmitters, firmware updates,
and how to use the SMART Technology on your transmitter, visit
www.SpektrumRC.com.

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4. Cyclic Response (Default 100%)
Higher cyclic response will result in a more aggressive cyclic response
Lower cyclic response will result in a less aggressive cyclic response.
5. Tailrotor P Gain Adjustment (Default 85%)
Higher gain will result in greater stability. Setting the gain too high may
result in random twitches if your model has an excessive level of vibration.
High frequency oscillations may also occur if the gain is set too high.
Lower gain may result in a decrease in stability. Too low of a value may
result in a less stable model particularly outdoors in winds.
If you are located at a higher altitude or in a warmer climate, higher gains
may be beneficial—the opposite is true for lower altitude or colder climates.
6. Tailrotor I Gain Adjustment (Default 95%)
Higher gain results in the tail remaining still. If the gain is raised too far, low
speed oscillations may occur.
Lower gain will result in the tail drifting in flight over time.
If you are located at a higher altitude or in a warmer climate, higher gains
may be beneficial—the opposite is true for lower altitude or colder climates.
7. Tailrotor D Gain Adjustment (Default 10%)
Higher gain will improve the response rate to your inputs. If raised too far,
high frequency oscillations may occur.
Lower gain will slow down the response to inputs, but will not have an effect
on stability.
SAFE®Technology
Always complete test flights and gain adjustments before enabling SAFE
Technology features.
Before enabling the stability feature, test the operation by activating SAFE Panic
Recovery function in flight with the transmitter sticks centered. The model
should return to within 4 degrees of level.
NOTICE: High levels of vibration can lead to attitude estimation errors.
When SAFE Panic Recovery is activated, if the model is outside of 4 degrees
of level, evaluate the model for vibration and, if necessary, perform the
calibration step.

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Mixing
P-Mix 1 Normal
Channels Ger > Gyr
Rate 125%/0%
Offset –100%
Switch Switch I
Position 0 1
Calibration
The FC6250HX is calibrated at the factory. Recalibrate the unit if the panic
or stability functions do not return to level or if there is a slow drift in the roll,
pitch, or yaw axis:
Firmware Version 5.4 or earlier the FC6250HX must be label up and level
during calibration. With v5.4 it is not necessary to calibrate the sensor when
the sensor orientation is changed.
Firmware Version 5.5 or newer the calibration is performed in the selected
mounting orientation with the FC6250HX side facing upward being level.
When changing the mounting orientation setting in v5.5 the system will ask
you to calibrate the gyro. Once the model is level select Apply to complete the
calibration step.
The firmware version is shown at the bottom of the forward programming
screen.
The SAFE Panic Recovery function is activated by setting up the following mix
within the transmitter:
To activate the SAFE Panic Recovery function, move the collective stick to the
center position and press the bind button (switch I) on your transmitter.
The SAFE Stability function can be enabled within the forward programming
SAFE menu. All gains, flight mode setup, envelope and gain settings are avail-
able within the SAFE menu. To enable or disable the stability function per flight
mode set the FM Channel to the appropriate channel within the Setup menu.

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Bubble Level
Foam Blade
Holder
Binding with Optional Second Remote Receiver
1. Remove the telemetry remote cable from the BND/PRG/RX2 port.
2. Insert a bind plug into the BND/PRG/RX2 port.
3. Power ON the FC6250HX, the orange LED on the remote receiver will
begin to flash to indicate it is in bind mode.
4. Leave power connected and remove the bind plug.
5. Reconnect the telemetry remote cable to the BND/PRG/RX2 port and press
the bind button on the telemetry remote receiver. The orange LED on the
telemetry remote will flash when it enters bind mode. Release the bind
button.
6. Put your transmitter into bind mode. The Orange LED on the remotes will
remain lit when the bind is successful.
Repeat the process if necessary.
1. Level the model using a bubble level on the roll and pitch axis, power on and
initialize the system.
2. Go to the System Setup menu and select Calibrate.
3. Select Apply.
A red flashing light during calibration indicates the model is either not level
or not stationary. Level the model, taking care to keep it still.
A yellow flashing light during calibration indicates the calibration is
proceeding normally.
4. After the calibration is successful, the LED flashes green.

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Troubleshooting Guide
Problem Possible Cause Solution
Helicopter will
not bind to the
transmitter
(during bind-
ing)
Low flight battery or trans-
mitter battery voltage Fully charge or replace the flight battery and/or transmitter batteries
Transmitter is not in bind
mode
Power on the transmitter while hold-
ing the Trainer/Bind switch. Hold the
Trainer/Bind switch until binding is
complete
Transmitter too close
to the helicopter during
binding process
Power off the transmitter. Move the
transmitter further away from the
helicopter.
Disconnect and reconnect the flight bat-
tery to the helicopter and follow binding
instructions
Helicopter will
not link to the
transmitter
(after binding)
Helicopter is bound to a
different model memory
(ModelMatch™radios
only)
Disconnect the flight battery. Select the
correct model memory on the transmit-
ter. Reconnect the flight battery
Flight battery/Transmitter
battery charge is too low Replace or recharge batteries
Flight control-
ler will not
initialize
Helicopter was moved
during initialization If windy, lay helicopter on its side during initialization
Transmitter is powered off Power on the transmitter
Controls are not centered Center elevator, aileron and rudder
controls. Make sure the throttle is at idle
Helicopter will
not respond to
the throttle but
responds to
other controls
Throttle not at idle and/or
throttle trim is too high Lower the throttle stick and lower the throttle trim
Transmitter is not in
normal mode or throttle
hold is on
Verify the transmitter is in normal mode
and throttle hold is off
Motor is not connected
to the ESC or the motor
wires are damaged
Connect the motor wires to the ESC and
check motor wires for damage
Flight battery charge is
too low Replace or recharge flight battery
Throttle channel is re-
versed Reverse the throttle channel on the transmitter

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Troubleshooting Guide
Problem Possible Cause Solution
Helicopter
power is
lacking
Flight battery has low
voltage Fully charge the flight battery
Flight battery is old or
damaged Replace the flight battery
Flight battery cells are
unbalanced Fully charge the flight battery, allowing the charger time to balance the cells
Excessive current is being
drawn through the BEC Check all servos and the helicopter motor for damage
Tail drive belt tension is
not correct See “Tail Belt Tension” section in this manual
Helicopter will
not lift off
Main rotor head is not
spinning in the correct
direction
Make sure the main rotor head is
spinning clockwise. Refer to the motor
control test
Transmitter settings are
not correct Check throttle and pitch curve settings and pitch control direction
Flight battery has low
voltage Fully charge the flight battery
Main rotor blades are
installed backwards Install the main rotor blades with the thicker side as the leading edge
Helicopter tail
spins out of
control
Rudder control and/or
sensor direction reversed
Make sure the rudder control and the
rudder sensor are operating in the
correct direction
Tail servo is damaged Check the rudder servo for damage and
replace if necessary
Inadequate control arm
throw Check the rudder control arm for ad- equate travel and adjust if necessary
Tail belt is too loose Make sure the tail drive belt tension is
adjusted correctly
Helicopter
wobbles in
flight
Cyclic gain is too high Tuning options using forward program- ming are available under the “Advanced
Settings” section in this manual
Headspeed is too low Increase the helicopter’s head speed via your transmitter settings and/or using a
freshly charged flight pack
Dampers are worn Replace the main rotor head dampers

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1-YEAR LIMITED WARRANTY
What this Warranty Covers — Horizon Hobby, LLC, (Horizon) warrants to the
original purchaser that the product purchased (the “Product”) will be free from
defects in materials and workmanship for a period of 1 year from the date of
purchase.
What is Not Covered
This warranty is not transferable and does not cover (i) cosmetic damage, (ii)
damage due to acts of God, accident, misuse, abuse, negligence, commercial
use, or due to improper use, installation, operation or maintenance, (iii) modifica-
tion of or to any part of the Product, (iv) attempted service by anyone other than
a Horizon Hobby authorized service center, (v) Product not purchased from an
authorized Horizon dealer, (vi) Product not compliant with applicable technical
regulations, or (vii) use that violates any applicable laws, rules, or regulations.
OTHER THAN THE EXPRESS WARRANTY ABOVE, HORIZON MAKES NO OTHER
WARRANTY OR REPRESENTATION, AND HEREBY DISCLAIMS ANY AND ALL
IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WAR-
RANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE. THE PURCHASER ACKNOWLEDGES THAT THEY ALONE
HAVE DETERMINED THAT THE PRODUCT WILL SUITABLY MEET THE REQUIRE-
MENTS OF THE PURCHASER’S INTENDED USE.
Purchaser’s Remedy — Horizon’s sole obligation and purchaser’s sole and
exclusive remedy shall be that Horizon will, at its option, either (i) service, or (ii)
replace, any Product determined by Horizon to be defective. Horizon reserves
the right to inspect any and all Product(s) involved in a warranty claim. Service or
replacement decisions are at the sole discretion of Horizon. Proof of purchase is
required for all warranty claims. SERVICE OR REPLACEMENT AS PROVIDED UN-
DER THIS WARRANTY IS THE PURCHASER’S SOLE AND EXCLUSIVE REMEDY.
Limitation of Liability — HORIZON SHALL NOT BE LIABLE FOR SPECIAL,
INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES, LOSS OF PROFITS OR
PRODUCTION OR COMMERCIAL LOSS IN ANY WAY, REGARDLESS OF WHETHER
SUCH CLAIM IS BASED IN CONTRACT, WARRANTY, TORT, NEGLIGENCE, STRICT
LIABILITY OR ANY OTHER THEORY OF LIABILITY, EVEN IF HORIZON HAS BEEN
ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. Further, in no event shall the
liability of Horizon exceed the individual price of the Product on which liability is
asserted. As Horizon has no control over use, setup, final assembly, modification
or misuse, no liability shall be assumed nor accepted for any resulting damage or
injury. By the act of use, setup or assembly, the user accepts all resulting liability.
If you as the purchaser or user are not prepared to accept the liability associated
with the use of the Product, purchaser is advised to return the Product immedi-
ately in new and unused condition to the place of purchase.
Law — These terms are governed by Illinois law (without regard to conflict of law
principals). This warranty gives you specific legal rights, and you may also have
other rights which vary from state to state. Horizon reserves the right to change or
modify this warranty at any time without notice.
WARRANTY SERVICES
Questions, Assistance, and Services — Your local hobby store and/or place
of purchase cannot provide warranty support or service. Once assembly, setup or
use of the Product has been started, you must contact your local distributor or Ho-
rizon directly. This will enable Horizon to better answer your questions and service
you in the event that you may need any assistance. For questions or assistance,

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please visit our website at www.horizonhobby.com, submit a Product Support In-
quiry, or call the toll free telephone number referenced in the Warranty and Service
Contact Information section to speak with a Product Support representative.
Inspection or Services — If this Product needs to be inspected or serviced and
is compliant in the country you live and use the Product in, please use the Horizon
Online Service Request submission process found on our website or call Horizon
to obtain a Return Merchandise Authorization (RMA) number. Pack the Product
securely using a shipping carton. Please note that original boxes may be included,
but are not designed to withstand the rigors of shipping without additional protec-
tion. Ship via a carrier that provides tracking and insurance for lost or damaged
parcels, as Horizon is not responsible for merchandise until it arrives and is ac-
cepted at our facility. An Online Service Request is available at http://www.hori-
zonhobby.com/content/service-center_render-service-center. If you do not have
internet access, please contact Horizon Product Support to obtain a RMA number
along with instructions for submitting your product for service. When calling
Horizon, you will be asked to provide your complete name, street address, email
address and phone number where you can be reached during business hours.
When sending product into Horizon, please include your RMA number, a list of the
included items, and a brief summary of the problem. A copy of your original sales
receipt must be included for warranty consideration. Be sure your name, address,
and RMA number are clearly written on the outside of the shipping carton.
NOTICE: Do not ship LiPo batteries to Horizon. If you have any issue with
a LiPo battery, please contact the appropriate Horizon Product Support
office.
Warranty Requirements — For Warranty consideration, you must include your
original sales receipt verifying the proof-of-purchase date. Provided warranty con-
ditions have been met, your Product will be serviced or replaced free of charge.
Service or replacement decisions are at the sole discretion of Horizon.
Non-Warranty Service — Should your service not be covered by warranty,
service will be completed and payment will be required without notifica-
tion or estimate of the expense unless the expense exceeds 50% of the
retail purchase cost. By submitting the item for service you are agreeing
to payment of the service without notification. Service estimates are avail-
able upon request. You must include this request with your item submitted
for service. Non-warranty service estimates will be billed a minimum of ½
hour of labor. In addition you will be billed for return freight. Horizon accepts
money orders and cashier’s checks, as well as Visa, MasterCard, American
Express, and Discover cards. By submitting any item to Horizon for service,
you are agreeing to Horizon’s Terms and Conditions found on our website
http://www.horizonhobby.com/content/service-center_render-service-center.
ATTENTION: Horizon service is limited to Product compliant in the
country of use and ownership. If received, a non-compliant Product
will not be serviced. Further, the sender will be responsible for ar-
ranging return shipment of the un-serviced Product, through a carrier
of the sender’s choice and at the sender’s expense. Horizon will hold
non-compliant Product for a period of 60 days from notification, after
which it will be discarded.
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Warranty and Service Contact Information
Country of
Purchase Horizon Hobby Contact Information Address
United States
of America
Horizon Service
Center
(Repairs and Repair
Requests)
servicecenter.horizonhobby.com/
RequestForm/
2904 Research Rd
Champaign, Illinois,
61822 USA
Horizon Product
Support
(Product Technical
Assistance)
productsupport@
horizonhobby.com
877-504-0233
Sales [e-mail]
800-338-4639
EU
Horizon Technischer
Service [e-mail] Hanskampring 9
D 22885 Barsbüttel,
Germany
Sales: Horizon
Hobby GmbH [phone]
This device complies with part 15 of the FCC rules. Operation is subject to the
following two conditions: (1) This device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that
may cause undesired operation.
CAUTION: Changes or modifications not expressly approved by the
party responsible for compliance could void the user’s authority to
operate the equipment.
This product contains a radio transmitter with wireless technology which has
been tested and found to be compliant with the applicable regulations governing
a radio transmitter in the 2.400GHz to 2.4835GHz frequency range.
Supplier’s Declaration of Conformity
Spektrum Heli Flight Controller (SPMFC6250HX)
This device complies with part 15 of the FCC Rules. Operation is subject
to the following two conditions: (1) This device may not cause harmful
interference, and (2) this device must accept any interference received, including
interference that may cause undesired operation.
CAUTION: Changes or modifications not expressly approved by the
party responsible for compliance could void the user’s authority to
operate the equipment.
NOTE: This equipment has been tested and found to comply with the limits
for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits
are designed to provide reasonable protection against harmful interference in
a residential installation. This equipment generates, uses and can radiate radio
frequency energy and, if not installed and used in accordance with the instruc-
tions, may cause harmful interference to radio communications. However, there
is no guarantee that interference will not occur in a particular installation. If this
equipment does cause harmful interference to radio or television reception, which
can be determined by turning the equipment off and on, the user is encouraged
to try to correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
FCC Information

EN
19
IC Information
Compliance Information for the European Union
CAN ICES-3 (B)/NMB-3(B)
This device contains license-exempt transmitter(s)/receivers(s) that comply
with Innovation, Science, and Economic Development Canada’s license-exempt
RSS(s). Operation is subject to the following 2 conditions:
1. This device may not cause interference.
2. This device must accept any interference, including interference that may
cause undesired operation of the device.
• Connect the equipment into an outlet on a circuit different from that to which
the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
Horizon Hobby, LLC
2904 Research Rd.
Champaign, IL 61822
Email: [e-mail]
Web: HorizonHobby.com
EU Compliance Statement:
Spektrum Heli Flight Controller (SPMFC6250HX)
Hereby, Horizon Hobby, LLC declares that the device is in com-
pliance with the following: 2014/30/EU EMC Directive ; RoHS
2 Directive 2011/65/EU; RoHS 3 Directive - Amending 2011/65/EU Annex II
2015/863.
The full text of the EU declaration of conformity is available at the following inter-
net address: https://www.horizonhobby.com/content/support-render-compliance.
NOTE: This product contains batteries that are covered under the 2006/66/EC
European Directive, which cannot be disposed of with normal household waste.
Please follow local regulations.
EU Manufacturer of Record: EU Importer of Record:
Horizon Hobby, LLC Horizon Hobby, GmbH
2904 Research Road Hanskampring 9
Champaign, IL 61822 USA 22885 Barsbüttel Germany
WEEE NOTICE:
This appliance is labeled in accordance with European Directive
2012/19/EU concerning waste of electrical and electronic equip-
ment (WEEE). This label indicates that this product should not be
disposed of with household waste. It should be deposited at an
appropriate facility to enable recovery and recycling.

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72
© 2022 Horizon Hobby, LLC. Blade, DSMX, AS3X, SAFE, and SRXL2 are
trademarks or registered trademarks of Horizon Hobby, LLC. The Spektrum
trademark is used with permission of Bachmann Industries, Inc.
All other trademarks, service marks and logos are property of their respective owners.
US 9,930,567. US 10,419,970. US 9,056,667. US 9,753,457. US 10,078,329.
Updated 10/22 62400.1