®

Instruction Manual
EN 2

• Always keep a safe distance in all directions around your model to avoid collisions or injury. This model is controlled by a radio signal subject to interference 

from many sources outside your control. Interference can cause momentary 

loss of control.

• Always operate your model in open spaces away from full-size vehicles, traffi c 

and people.

• Always carefully follow the directions and warnings for this and any optional 

support equipment (chargers, rechargeable battery packs, etc.).

• Always keep all chemicals, small parts and anything electrical out of the reach 

of children.

• Always avoid water exposure to all equipment not specifi cally designed and 

protected for this purpose. Moisture causes damage to electronics.

• Never place any portion of the model in your mouth as it could cause serious 

injury or even death.

• Never operate your model with low transmitter batteries.

• Always keep aircraft in sight and under control.

• Always move the throttle fully down at rotor strike.

• Always use fully charged batteries.

• Always keep transmitter powered on while aircraft is powered.

• Always remove batteries before disassembly

• Always keep moving parts clean.

• Always keep parts dry.

• Always let parts cool after use before touching.

• Always remove batteries after use.

• Never operate aircraft with damaged wiring.

• Never touch moving parts.

Age Recommendation: Not for children under 14 years. This is not a toy.

CAUTION: The ESCs for the 350 QX are not compatible with any other product, and the 350 QX is not compatible with any other ESCs. Use of any other 

ESCs on the 350 QX will cause a crash, which may result in property damage and/or personal injury.

WARNING AGAINST COUNTERFEIT PRODUCTS: If you ever need to replace a Spektrum component found in a Horizon Hobby product, always purchase 

from Horizon Hobby, Inc. or a Horizon Hobby authorized dealer to ensure authentic high-quality Spektrum product. Horizon Hobby, Inc. disclaims all support 

and warranty with regards, but not limited to, compatibility and performance of counterfeit products or products claiming compatibility with DSM or Spektrum.

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 use with incompatible components or alter this product in any way outside of the instructions provided by Horizon Hobby, Inc. 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.

The following terms are used throughout the product literature to indicate various levels of potential harm when operating this product:

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 superfi cial injury.

NOTICE

All instructions, warranties and other collateral documents are subject to change at the sole discretion of Horizon Hobby, Inc. For up-to-date product literature, visit 

horizonhobby.com and click on the support tab for this product. 

Meaning of Special Language

General Safety Precautions and Warnings 
3 EN

®

Thank you for purchasing the Blade 350 QX quadcopter. You are infor an exciting experience with this exceptional fl ying machine. With 

GPS, pressure and compass sensors added to the SAFETM (Sensor

Assisted Flight Envelope) system, the 350 QX has some incredible 

features. Position hold, altitude command and self-leveling provide you 

with a smooth and manageable fl ight performance. With the addition of 

the SAFE CircleTM, Stick Relativity and Return Home functions, the 350 

QX makes it more practical and easier to fl y for new pilots without RC 

experience. The Blade 350 QX uses LED codes to communicate fl ight 

modes, GPS functions and errors for which you will need the manual. To 

assure you have a safe and fun experience with your new quadcopter, it 

is critical that you take the time to read and understand this manual and 

all the features this aircraft contains.

Table of Contents

Component RTF BNF

Airframe Blade 350 QX Quadcopter included included

Motors 4x Brushless Outrunner Motor, 1100Kv installed installed

ESCs 4x 10-Amp Brushless ESC installed installed

Battery 3S 11.1V 2200mAh 30C Li-Po included included

Charger 2–3S Li-Po Balancing DC Charger, 0.5–3A included included

Transmitter DSM2®/DSMX® compatible transmitter included required

Length 18.30 in (465mm)

Height 5.43 in (138mm)

Main Rotor Diameter 22.80 in (580mm)

Flying Weight 24 oz (680 g)

To register your product online, visit www.bladehelis.com

Blade 350 QX Specifi cations

Box Contents ......................................................................................................4

Charging Warnings..............................................................................................4

Low Voltage Cutoff (LVC) .....................................................................................4

Charging the Flightline Battery ............................................................................4

Mounting a Camera ............................................................................................5

Transmitter Setup (BNF) ......................................................................................6

Transmitter Control Layout (RTF) .........................................................................7

Connecting the Flight Battery ..............................................................................7

Binding ...............................................................................................................8

Flight Mode Switches..........................................................................................9

Flight Modes Explained .......................................................................................9

Audible Alerts and LED Codes ...........................................................................10

GPS Functionality of the 350 QX ........................................................................12

Flight Guidelines and Warnings .........................................................................12

Preparing the 350 QX for Flight .........................................................................13

Flying the 350 QX .............................................................................................13

Airframe Maintenance.......................................................................................15

Compass Calibration .........................................................................................16

Pressure Sensor Calibration ..............................................................................16

Accelerometer Calibration .................................................................................16

ESC and Motor Assignment Procedure ..............................................................17

Troubleshooting ................................................................................................17

Limited Warranty ..............................................................................................18

Warranty and Service Contact Information ........................................................18

FCC Information ................................................................................................19

IC Information ...................................................................................................19

Compliance Information for the European Union ................................................19
EN 4

Box Contents

• Blade 350 QX

• Camera Mount

• 3S 11.1V 2200mAh Li-Po Battery Pack 

• 2–3S DC Li-Po Balancing Charger

• DX5e DSMX 5-Channel Transmitter (RTF only)

• 4 AA Batteries (RTF only)

Charging the Flight Battery

Charging Warnings

E-fl ite® 2–3S Li-Po Balancing Charger Specifi cations

• Input power: 10.5–15.0V DC, 3-amp

• Charges 2- to 3-cell Li-Po packs with minimum 

capacity of 500mAh

E-fl ite 3S 11.1V 2200mAh Li-Po Battery Pack

The E-fl ite® 3S Li-Po battery pack features a balancing 

lead that allows you to safely charge your battery pack 

when used with the included E-fl ite Li-Po balancing 

charger.

CAUTION: The balance connector must be 

inserted into the correct port of your charger 

prior to charging.

The Battery Charger (EFLC3010) included with your quadcopter has been

designed to safely charge the Li-Po battery.

CAUTION: All instructions and warnings must be followed exactly. 

Mishandling of Li-Po batteries can result in a fi re, personal injury and/or 

property damage.

• By handling, charging or using the included Li-Po battery, you assume all risks 

associated with lithium batteries.

• If at any time the battery begins to balloon or swell, discontinue use immediately. If charging or discharging, discontinue and disconnect. Continuing to 

use, charge or discharge a battery that is ballooning or swelling can result in 

fi re.

• Always store the battery at room temperature in a dry area for best results.

• Always transport or temporarily store the battery in a temperature range of 

40–120o F (5–49° C). Do not store battery or model in a car or direct sunlight. 

If stored in a hot car, the battery can be damaged or even catch fi re.

• Always charge batteries away from fl ammable materials.

• Always inspect the battery before charging

• Always disconnect the battery after charging, and let the charger cool between 

charges.

• Always constantly monitor the temperature of the battery pack while charging.

• ONLY USE A CHARGER SPECIFICALLY DESIGNED TO CHARGE LI-PO BATTERIES. Failure to charge the battery with a compatible charger may cause a fi re 

resulting in personal injury and/or property damage.

• Never discharge Li-Po cells to below 3V under load.

• Never cover warning labels with hook and loop strips.

• Never leave charging batteries unattended.

• Never charge batteries outside recommended levels.

• Never charge damaged batteries.

• Never attempt to dismantle or alter the charger.

• Never allow minors to charge battery packs.

• Never charge batteries in extremely hot or cold places

(recommended between 40–120° F) or (5–49° C) or place in direct sunlight.

Low Voltage Cutoff (LVC)

Low voltage cutoff (LVC) protects the Li-Po battery from over-discharge in fl ight 

and activates when the battery reaches a preset value. When the battery is 

discharged to the cutoff point, the aircraft will display rapidly fl ashing red, green 

and blue LEDs to warn you it’s time to land. When you see this LED code, land 

immediately to prevent over-discharge and damage to the battery.

When the LVC is activated, you have approximately 2 minutes until the battery is 

depleted and can no longer maintain a hover. Repeated fl ying to LVC will damage 

the battery.

NOTICE: Crash damage and battery damage are not covered under warranty. 

IMPORTANT: Always disconnect and remove the Li-Po battery from the aircraft 

after each fl ight. Charge your Li-Po battery to about half capacity before storage. 

During storage, make sure the battery charge does not fall below 3V per cell. 

A connected battery will result in trickle discharge.
5 EN

The Battery Charging Process

1. Charge only batteries that are cool to the touch and are not damaged. Look at the battery to make sure it is not damaged e.g., swollen, bent, broken or punctured.

2. Attach the input cord of the charger to an appropriate power supply, such as a 12V battery or 12V DC power supply.

3. When the Li-Po charger has been correctly powered up, there will be an approximate 3-second delay, then an audible “beep” and the green (ready) LED will fl ash.

4. Turn the control on the Amps selector so the arrow points to the charging rate required for the battery (the 2200mAh Li-Po battery will charge at 2.0 amps).

DO NOT change the charge rate once the battery begins charging.

5. Move the cell selector switch to 3-cell for your battery. 

6. Connect the balancing lead of the battery to the 3-cell (4 pin) charger port and press the Start button to begin battery charging.

7. The green and red LEDs may fl ash during the charging process when the charger is balancing cells. Balancing prolongs the life of the battery. 

8. When the battery is fully charged, a beep will sound for about 3 seconds and the green LED will shine continuously. Attempting to charge an over-discharged

battery will cause the charger to repeatedly fl ash and beep, indicating an error has occurred.

9. Always unplug the battery from the charger immediately upon completion of charging.

CAUTION: Overcharging a battery can cause a fi re.

NOTICE: If using a battery other than the included Li-Po battery, refer to your battery manufacturer’s instructions for charging.

IMPORTANT: Consult local laws and ordinances before installing and operating any type of photograph-capable or video recording device in this product.

Mounting a Camera

1 2

Installing the Included Camera Frame to the Isolation Mount

* Camera not included

*
EN 6

Transmitter Model 

Type

Reverse 

Setup

Throttle 

Cut 

Setup

Mode Setup Switch Positions Throttle Cut Return Home Dual Rate 

Switch

High 

Rate

Low 

Rate

DX4e (New)*

w/3-position 

switch

N/A N/A N/A N/A

Position 0 = SMART Mode

Lower throttle 

trim until motors 

stop turning

Press and Hold 

TRAINER/BIND 

Release to EXIT

Rate 100%

fi xed

70%

fi xed Position 1 = Stability Mode

Position 2 = Agility Mode

DX5e (New)*

w/3-position 

switch

N/A N/A N/A N/A

Position 0 = SMART Mode

Lower throttle 

trim until motors 

stop turning

Press and Hold 

TRAINER/BIND 

Release to EXIT

Rate 100%

fi xed

70%

fi xed Position 1 = Stability Mode

Position 2 = Agility Mode

DX6i Acro

THRO-N

ELEV-N

GEAR-R

AILE-N

RUDD-N

FLAP-N

ACT

Travel Adj: GEAR POS (0) GEAR: ↑100%;

GEAR/F MODE POS (1) GEAR: ↓40%

FLAPS: Norm ←↑100; LAND ↓100

MIX 1: ACT; GEAR → GEAR ACT

 RATE D 0%; U + 100%

 SW MIX TRIM INH

SUB TRIM THRO ↑ 15-20%

GEAR 0; Mix 0 = SMART Mode

Press throttle cut

FLAP Position 0 

= OFF

FLAP Position 2 = 

Return Home

GEAR 1; Mix 0 = Stability Mode ELEV-AIL D/R 100% 70%

GEAR 1; Mix 1 = Agility Mode

DX7/7SE Acro FLAP-R (6)

Others-N N/A

Travel Adj: GEAR (0)↑100%;

GEAR (1) ↓40%

MIX 1: FLAP → Gear OFF/ON

 RATE → -50%

 0%

 SW: MIX OFFSET: 0

GEAR (0);

Mix (0) = SMART Mode

Lower throttle 

trim until motors 

stop turning

FLAP Pos 0

= OFF

FLAP Pos 1

= Return Home

ELEV-AIL D/R 100% 70% GEAR (1);

Mix (0) = Stability Mode

GEAR (1);

Mix (1) = Agility Mode

DX7S Acro AUX1-R

Others-N

Set To: 

Trainer

Switch Select:

Move Gear to F MODE (F MODE:GEAR)

Leave FLAPS as AUX1

Set All Others to INH

MIX 1: GER > GER

RATE: 0%

 -100%

OFFSET: 0%; TRIM: INH; SW: Mix0

F MODE (0) = SMART Mode

Press

Trainer

FLAP Pos 0 = OFF

FLAP Pos 2 = 

Return Home

F MODE (1) = Stability Mode ELEV-AIL D/R 100% 70%

F MODE (1);

HOLD (1) = Agility Mode

DX8 Acro AUX1-R

Others-N

Set To: 

Trainer

Switch Select: F-Mode to Gear;

 Flap to Aux 1

 All Others to INH

F MODE (0) = SMART Mode

Press Trainer/

Bind

FLAP Pos 0

= OFF

FLAP Pos 2

= Return Home

F MODE (1) = Stability Mode ELEV-AIL D/R 100% 70%

F MODE (2) = Agility Mode

DX9/DX18 Acro AUX1-R

Others-N

Set To:

I (BIND)

Channel Assign: NEXT

1-4: N/A 5 Gear: B

6 AUX1: D 7 AUX2: I

8-10: INH

B (0) = SMART Mode

Press I (BIND)

D (FLAP) Pos 0 

= OFF

D (FLAP) Pos 2 = 

Return Home

B (1) = Stability Mode ELEV-AIL D/R 100% 70%

B (2) = Agility Mode

* Old versions of the DX4e and DX5e (with 2-position channel 5 switches) are not recommended for the 350 QX. Only Smart Mode and Agility Mode will be 

available with GPS On.

Transmitter Setup (BNF)

CAUTION: When using a Futaba transmitter with a Spektrum DSM module, you must reverse the throttle channel and rebind. Refer to your Spektrum module 

manual for binding and failsafe instructions. Refer to your Futaba transmitter manual for instructions on reversing the throttle channel.
7 EN

Connecting the Flight Battery

1

4

2

3

1

2

3

Remove the battery cover Install the battery

Transmitter Control Layout (RTF)

Dual Rate Switch

(Mode 2)

Dual Rate Switch

(Mode 1) not shown

Bind/Trainer Switch

(Mode 2)

Bind/Trainer Switch

(Mode 1) not shown

Aileron/Roll

(Modes 2 and 1)

Flight Mode Switch

(Mode 2)

Flight Mode Switch

(Mode 1) not shown

Elevator/Pitch

(Mode 2)

Throttle/Altitude

(Mode 1)

Rudder/Yaw

(Modes 2 and 1)

Aileron Trim

Throttle/Altitude

(Mode 2)

Elevator/Pitch

(Mode 1)

Elevator Trim

(Mode 2)

Throttle Trim

(Mode 1)

Rudder Trim

Power Switch

Throttle Trim

(Mode 2)

Elevator Trim

(Mode 1)

Channel Reversing Switches
EN 8

Binding

• If you purchased the ready-to-fl y (RTF) model, the transmitter is bound to the model at the factory. If for any reason the model needs to be re-bound, follow the 

directions for the Bind-N-Fly® (BNF) version below.

To bind or re-bind your 350 QX to your chosen DSM2/DSMX transmitter, please follow the directions below along with the binding instructions 

included with your transmitter: ®

The Binding Process

1. With the transmitter and quadcopter powered off, connect the battery

to the 350 QX.

2. With the 350 QX on a level surface, turn on the power switch and allow 

the quadcopter to initialize.

3. Wait until the blue LED on the quadcopter fl ashes rapidly, signaling the 

quadcopter is initialized and ready to bind.

4. Ensure throttle is in the low position and throttle trim is at neutral.

5. Hold the control sticks in the desired bind position (see illustrations)

and press/pull the bind button/switch, then power on the transmitter.

6. Refer to the Flying LED Codes table to ensure the aircraft is bound 

correctly.

Mode 2 shown

Normal Bind

Roll left

Yaw left

Roll right

Yaw right

Bind with GPS enabled

Bind in compass calibration mode

Bind with GPS disabled

Bind in pressure calibration mode

TRAINER

TRAINER

TRAINER

TRAINER

TRAINER

Bind switch

(Trainer switch)

IMPORTANT: Do not attempt to bind with more than one bind code. 

Binding with more than one bind code will only allow the aircraft to 

bind normally.

Unless binding with a bind code, the elevator and aileron inputs (including trim) must be neutral during binding. If you are attempting a normal 

bind with any input other than neutral, the aircraft will emit a constant, 

rapid beeping sound.

Transmitter Bind Codes

Entering Bind Mode

If your 350 QX emits a constant beeping sound after binding

(Smart or Agility Mode only):

1. Ensure all trims are neutral.

2. Slowly move the elevator stick back and forth (close to center) and 

listen for the beeping to stop or hesitate. Take note of the direction 

you are moving the stick when the change of tone happens.

3. If the tone never changes with elevator movement, slowly move the 

aileron stick back and forth (close to center) and listen for the beeping to stop or hesitate. Take note of the direction you are moving the 

stick when the change of tone happens.

4. Input trim in the direction that caused the change in tone until the 

beeping stops.

In the event you cannot fi nd an input that stops the tones:

1. Apply 1 click of elevator trim in either direction and then slowly 

move the aileron stick close to center. 

2. Continue to add 1 click at a time of elevator trim, up to 5 trim steps 

off center up or down, and move the aileron stick until you fi nd the 

point that makes the tones stop.

3. Add aileron trim in the direction you moved the stick to make the 

tones stop.
9 EN

Flight Modes Explained

Flight Mode 0– Smart Mode (Default)

(Solid Green Indicator LED)

Stick Relativity– While in Smart Mode, the 

path of the aircraft will always follow the control stick 

input direction relative to the SAFE Circle, regardless of 

the direction the nose of the aircraft is pointing. 

• SAFE CircleTM– In most scenarios, the quad will not 

enter the SAFE Circle. 

• Position Hold– The aircraft will hold its position 

when elevator and aileron inputs are at neutral.

• Self-Leveling– Brings the 350 QX to a level attitude 

when the elevator and aileron inputs are at neutral.

• Altitude Command– Altitude is relative to throttle 

stick position.

Flight Mode 1– Stability Mode

(Solid Blue Indicator LED)

• Self-Leveling– Brings the 350 QX to a level 

attitude when the elevator and aileron inputs are 

at neutral.

• Position Hold– The 350 QX uses GPS to hold a 

given location when this function is activated. If 

GPS is enabled and has a solid lock, the aircraft will 

hold its position when elevator or aileron inputs are 

at neutral.

• Throttle provides proportional thrust– The throttle 

responds directly to the throttle input, giving the 

pilot direct control over hovering as well as ascent 

and descent rates.

Flight Mode 2– Agility Mode

(Solid Red Indicator LED)

• Aerobatic– Capable of fl ips and rolls 

• Throttle provides proportional thrust– The throttle 

responds directly to the throttle input, giving the 

pilot direct control over hovering and ascent and 

descent rates.

Stick Relativity

SAFE Circle

Aircraft response 

relative to the 

pilot location

Elevator input Aileron input

Forward

Left Right 

Back

NOTICE: Do not attempt to fl y your 350 QX in Stability Mode or Agility Mode until you have familiarized yourself with the operation of the aircraft in Smart Mode

and read and understand the descriptions of the other fl ight modes. 

Left aileron Right aileron

Forward elevator

Back elevator

Stability and Agility Mode Control Inputs

The Blade 350 QX fl ies very differently in the different fl ight modes. Beginners should 

use Smart Mode to start and progress slowly into Stability Mode. When fl ying in 

Smart Mode, the quadcopter follows stick input based on the set pilot location. When 

fl ying in Stability Mode, the quadcopter follows stick inputs based on the orientation 

of the aircraft. The transition from Smart Mode to Stability Mode can be a challenge 

for new fl yers because the pilot will need to learn how to interpret the aircraft’s 

orientation.

This aircraft is extremely sensitive to control inputs in Agility Mode and has NO self 

leveling. We recommend you fl y at low rate settings for the fi rst few fl ights until you 

are familiar with its response. For pilots new to quadcopters and helicopters, familiarize yourself with the Blade 350 QX in Smart Mode and at low rate. 

As you become more familiar with the quadcopter’s response, adjust the rates and 

expo to suit your fl ying style (if using a computer radio).

M d E l i d

Flight Mode Switches

TRAINER

Smart Mode

(Solid Green LED on the 350 QX)

Return Home

(Rapid Red fl ashing LED

on the 350 QX)

Stability Mode

(Solid Blue LED on the 350 QX)

Agility Mode

(Solid Red LED on the 350 QX)

GPS Enabled Functions
EN 10

The motors will Beep under the following conditions:

• Any time the props stop spinning after they have 

been initialized. 

• After 30 seconds of no throttle input

(waiting armed on the ground).

Audible Alerts and LED Codes

Startup LED Codes

Audible Alerts

Initialization Audible Alerts

1 second 1 second

Sequence

Initialization failed Pulsing red

IMU initialization Red, green and blue fl ash once

Fully charged battery Green (~2 second duration)

Fully discharged battery Red (~2 second duration)

Return to home mode activated Rapid red fl ashing

The quadcopter is in Bind mode Rapid blue fl ashing

Emergency mode

(cycle power to reinitialize) White fl ashing

Partial battery charge Color indicates level of battery charge

(~2 second duration)

1 second

Event Audible Alert

ESC power on one short beep

Successful initialization many continuous tones with increasing frequency

RC signal detected after start one long tone

Bind detected one long tone

Bind accepted (3 seconds after detected) one long tone

Thrust stick in correct position for motor start low, med, high (happy tone)

Cannot start motors because of low voltage high, med, low (sad tone)

Cannot start motors because vehicle is tilted high, med, low (sad tone)

Enter ESC ID assignment mode loud high, low — high, low

Event Audible Alert

Gyro, accelerometer sensor error High, low, 1 short tone

Compass initialization error High, low, 2 short tones

Pressure sensor initialization error High, low, 3 short tones

GPS initialization error High, low, 4 short tones

ESCs not detected High, low, 6 short tones

Settings saved (i.e. when changed GPS on/off, etc) Rapid low, med, high — low, med, high

Trim warning (when in Smart or Agility Mode) Continuous very short, rapid tone

Low-battery warning Medium frequency, loud tone (every 3 seconds)

Emergency state warning

(also after ESC ID assignment)

Once per second loud medium tone
11 EN

CAUTION: If you see the LED signal for low battery, immediately land your aircraft and recharge the battery.

CAUTION: Do not attempt to use Return Home with a low battery.

Flight battery voltage below 10.9V Red, green and blue fl ash (~3 second cycle)

Flight battery voltage below 10.6V Red, green and blue fl ash (~1 second cycle)

Flying LED Codes

Calibration LED Codes

Smart Mode, with GPS lock

Gyro temperature calibration*

Smart Mode, no GPS lock

No calibration

3 green fl ashes, pause

Green pulsing

Stability Mode, with pressure

Compass calibration entered

Slow green fl ash

Slow red and green fl ashing

Stability Mode, with GPS lock

Compass calibration started

Solid blue

Rapid red and green fl ashing

Stability Mode, no GPS lock

Pressure sensor temperature calibration

3 blue fl ashes, pause

Rapid red and blue fl ashing

Stability Mode, GPS disabled

Pressure and gyro calibration*

Slow blue fl ash

Rapid red, green and blue fl ashing

Agility Mode, with GPS lock

Accelerometer offset calibration entered

(in fl ight only)

Accelerometer offset calibration started

(in fl ight only)

Calibration failed

* These items are performed by the manufacturer.

Solid red

Slow red, green and blue fl ashing

Agility Mode, no GPS lock 3 red fl ashes, pause

Rapid red, green and blue fl ashing

Solid white

Agility Mode, GPS disabled Slow red fl ash

Flight mode set to Smart Mode

Flight mode set to Stability Mode Shows fl ight mode position on motor startup

Flight mode set to Agility Mode

Solid green

Rapid green and blue fl ashing

1 second

1 second

1 second

1 second

Sequence

Sequence

1 second

1 second
EN 12

GPS Functionality of the 350 QX

Flight Guidelines and Warnings

To acquire a reliable GPS signal, it is important the 350 QX has a clear view of 

the sky. Obstructions that can affect the aircraft’s ability to acquire an acceptable 

signal include:

• Flying close to or around tall/big buildings

• Flying under dense vegetation

• Flying indoors or under a structure

If you lose or cannot acquire a GPS lock and home position, the aircraft will not 

have Stick Relativity, SAFE Circle, Position Hold or Return Home functions available.

It is not possible to use Smart Mode without having GPS enabled. If the 350 QX 

is initialized without GPS enabled, it will default to Stability Mode. The aircraft 

will still be capable of altitude hold. 

If you do not have a GPS signal, try maneuvering the 350 QX by steering with 

forward elevator and rudder only.

CAUTION: Do not attempt to fl y the 350 QX with GPS enabled while 

indoors or in a location where the GPS signal is known to be poor, as 

loss of signal could result in a crash.

GPS Functions

(see the binding section for turning GPS functions ON and OFF )

With GPS ON

• If the 350 QX took off with GPS lock and a home position set, when Return 

Home mode is activated the quadcopter will fl y back to the start position 

(maintaining altitude along the way), then reduce altitude to land.

• If the 350 QX should lose GPS when Return Home mode is activated, it will 

land quickly using the barometric pressure sensor to maintain the descent 

rate.

• If the 350 QX took off without GPS lock, but acquires a GPS signal in fl ight, it 

will land slowly using GPS to hold its position and barometric pressure sensor to maintain the descent rate when Return Home mode is activated.

• If the 350 QX loses GPS during landing in Return Home mode, it will increase the rate of descent and land quickly to avoid drift.

• If the 350 QX deviates too far from its intended GPS path when in Return 

Home mode, it will descend using the barometric pressure sensor to maintain the descent rate. This could happen if the fl ight control system loses its 

orientation because of aggressive fl ight in 3 axis mode.

• Once the 350 QX has landed in Return Home mode it will disarm the motors 

With GPS OFF

• If Return Home mode is activated, the 350 QX will level off and land quickly 

using the barometric pressure sensor to maintain the descent rate.

• Once the 350 QX has landed in Return Home mode it will disarm the motors.

GPS Failure

Upon GPS failure, the 350 QX will respond according to the following conditions:

Smart Mode: (rapid Green fl ashing LED)

If the 350 QX is in this mode and the GPS fails, the quad will default to 

Stability Mode. The aircraft will still use the pressure sensor to maintain

altitude and control rate of descent. If GPS is re-acquired, after 5-10 

seconds of reliable GPS signal the Smart Mode functions are returned to 

normal 

Stability Mode: (long Blue, two short Green fl ashing LED)

If the 350 QX is in this mode and the GPS fails, it will not switch to Smart 

Mode and will not enter GPS hold, but will otherwise function normally. If 

GPS is reacquired, after 5-10 seconds of reliable GPS signal the Stability 

Mode functions are returned to normal 

Agility Mode: (long Red, two short Green fl ashing LED)

If the 350 QX is in this mode and the GPS fails, it will not affect fl ight performance, but it will not be able to switch into Smart Mode. It will still be able 

to switch into Stability Mode with the limitations described above. 

Loss of Transmitter Signal

If the transmitter signal is lost for any reason, the 350 QX will respond according 

to the following conditions:

• If the motors are not turning, the 350 QX will disarm.

• If the motors are turning but the 350 QX is not fl ying, it will turn off the motors and disarm. 

• If the 350 QX is fl ying and has a good GPS lock with a home position set, 

it will activate the Return Home function upon the loss of the transmitter 

signal. 

• If the compass is not connected or faulty, or if there is no GPS lock, the 350 

QX will descend slowly upon the loss of the transmitter signal.

• If the pressure sensor is not working, the 350 QX will reduce power to initiate a controlled descent upon the loss of the transmitter signal. 

• Always keep aircraft in sight and under control.

• Always keep people and pets at least 35 feet (10 meters) away when the 

battery is connected.

• Keep children out of the vicinity of this product at all times.

• Always use fully charged batteries.

• Always keep transmitter powered on while aircraft is powered. 

• Always remove batteries before disassembly.

• Always keep moving parts clean.

• Always keep parts dry.

• Always let parts cool after use before touching.

• Always remove batteries after use.

• Always have a fi rst aid kit with you.

• Always have an appropriate fi re extinguisher with you.

• Never operate aircraft with damaged wiring.

• Never touch moving parts.

The Blade 350 QX has many more features than other Blade quadcopters. 

Please take the time to read this manual and understand the functions this 

aircraft contains before fl ying.
13 EN

Preparing the 350 QX For Flight

CAUTION: When the home location is set (step 6), the 350 QX must be approximately 16 feet (5 meters) from where the pilot will stand during fl ight, pointing 

away from the pilot. If the aircraft is pointed in any other direction, the SAFE Circle feature will not function as expected and may result in personal injury or 

damage to property. Once the aircraft’s motors are started, do not change your position.

1. Power on the transmitter with the fl ight mode set to 

Smart Mode, the throttle stick down and the throttle 

trim at neutral. 

2. Install a charged battery, plug it in and close the 

hatch.

3. With the quad on a level surface, turn on the power 

switch and allow the 350 QX to initialize.

If the GPS is enabled, wait for the GPS signal to be 

acquired, which is indicated by a solid green LED. 

It may take from 30–90 seconds to acquire a GPS 

signal.

IMPORTANT: While in Smart Mode the motors will 

not start if a GPS signal has not been acquired.

4. Move the aircraft to the desired home location and 

orient the aircraft pointed away from the pilot.

5. Step back approximately 16 feet (5 meters) from the 

home location.

6. When you are prepared to fl y, quickly move the rudder stick all the way left and then all the way right. 

The props will begin to spin. The home position for 

GPS functions is set and your aircraft is ready to fl y. 

IMPORTANT: The motors will not start if the transmitter is set to low rate. The dual rate switch must be set 

to high rate.

Lower the throttle stick and the throttle trim to power 

off the props after fl ight.

16 feet (5 meters)

350 QX home location

Pilot location

SAFE Circle

Flying the 350 QX

Takeoff

Increase the throttle slightly above low stick (10–15%). 

The 350 QX altitude in Smart Mode corresponds to the 

throttle position. Low throttle is on the ground, slightly 

raising the throttle will produce a low hover, and the 

higher the throttle position, the higher the 350 QX will 

ascend until it reaches its maximum altitude (approximately 45 meters).

Explore the fl ight envelope of the 350 QX in Smart 

Mode without fear of losing orientation. See the 

diagrams in the Flight Modes Explained section for 

more details on the aircraft’s function in Smart Mode.

In Smart Mode, the direction the aircraft is pointing 

does not affect the control, and the aircraft’s response 

relative to you (the pilot location) does not change with 

orientation. Stability Mode and Agility Mode operate 

more like a conventional RC helicopter or multicopter.

IMPORTANT: Aggressive fl ight in Agility Mode will

signifi cantly reduce fl ight time. 

Maximum altitude

(approximately 45 meters)

Intermediate altitude

On the ground

Full throttle

Half throttle

Low throttle

Mode 2 shown

Smart Mode Flying

Smart Mode Altitude Control
EN 14

Return Home

• When this feature is activated, the 350 QX will 

fl y back to its assigned home location and 

land. After landing, the motors may take up to 

5 seconds to disarm. If the motors take more 

than 20+ seconds to disarm, perform the 

Pressure Sensor Calibration.

• To restart the props after landing in Return Home, 

fully lower the throttle and ensure the throttle trim is 

neutral, then quickly move the rudder stick fully left 

and then fully right.

CAUTION: The 350 QX will not recognize the 

SAFE Circle feature when Return Home is 

used. Activating Return Home may cause the 350 QX 

to fl y directly over the pilot if the aircraft was fl own to 

a position behind where the pilot was standing when 

the home position was established.

TRAINER

Activating Return Home

Press and hold.

Releasing the switch

will stop the Return Home

program.

Landing

To land the 350 QX there are two options: 

• Guide the aircraft to where you wish to land and 

reduce the throttle. Reduce the throttle trim after 

landing to disarm the motors.

• Activate the Return Home function to return the 

350 QX to the assigned home location and land 

automatically.

CAUTION: Do not activate the Return Home

function if the 350 QX is showing the low

battery indication. Manually land the aircraft

immediately.

After Your Flight

1. Turn off the power switch on the 350 QX.

2. Turn off the power to your transmitter.

3. Unplug and remove the battery from the 350 QX.

CAUTION: Always disconnect the Li-Po battery from the aircraft when not fl ying to avoid 

over-discharging the battery. Batteries discharged to a 

voltage below the lowest approved voltage may become 

damaged, resulting in loss of performance and potential 

fi re when batteries are charged.

Location alert

The motors will Beep under the following conditions:

• At any time the props stop spinning after they have 

been initialized. 

• After 30 seconds of no throttle input (waiting armed 

on the ground).

This will alert the pilot to the location of the aircraft if it 

lands in a location with low visibility. 

Beeping will continue until the battery can no longer 

supply enough power to the motors.

If the quadcopter crash lands and one or more motors 

are stopped by an impact, the quadcopter enters 

emergency mode. The LED will fl ash white and the 

motors will beep loudly.
15 EN

Airframe Maintenance

Replacing the body

Disassembly of the old airframe

1. Ensure the battery is disconnected from the

quadcopter. 

2. Remove the 2 machine screws from each propeller 

and remove the propellers. 

3. Remove the 32 1.5mm hex screws from the bottom 

of the frame to separate the upper and lower body 

pieces.

4. Unplug the compass sensor from the fl ight control 

board. Remove the landing gear with compass sensor and place it in a safe area away from magnets. 

NOTICE: Do not allow the compass sensor to

get near a magnet. Any magnet, including those in 

the 350 QX motors, can damage the compass and 

cause it to work incorrectly. If the 350 QX is fl own 

with a faulty compass, all GPS functions will be 

compromised. 

5. Unplug the GPS receiver from the fl ight control 

board and remove the battery tray assembly.

6. If you are replacing the GPS components, remove 

the foil from the GPS receiver and unplug the GPS 

antenna from the GPS receiver. 

7. Remove the fl ight control board from the airframe.

8. Remove the motors and ESCs from the airframe.

Before installing the components into the new airframe, 

inspect all the components for any obvious damage or 

burnt smells. Check the motors for smooth bearings 

and inspect all the propellers for chips, burrs or cracks. 

Replace any parts in question. 

Installing components in the new airframe

1. Install the motors and ESCs, making sure to match 

the wire colors on the connectors.

2. Install the fl ight control board.

3. Install the tray assembly.

4. Install the GPS receiver and GPS antenna and plug 

the cables into their corresponding sockets.

5. Assign the motors and ESCs according to the

ESC and Motor Assignment Procedure.

6. Install the landing gear and connect the compass 

to the fl ight control board. If you replaced the 

compass or believe that it may have been impaired 

by a magnetic fi eld, you will need to perform the 

compass calibration procedure. 

7. Mount the top of the airframe.

8. Install the propellers, paying attention to the

direction of rotation as indicated by the arrows 

molded in the frame and on the propellers for each 

motor.

Body Screw

Locations

Propeller Direction of Rotation Indicators

Internal Components

Motors

ESCs

GPS receiver

GPS antenna

Battery tray assembly

Flight control board

Rotation 

direction

Motor number
EN 16

Compass Calibration Steps

Compass Calibration

Pressure Sensor Calibration

Accelerometer Calibration

The Flight Controller on the 350 QX has automatic magnetic declination calibration, so you will not have to worry about looking up the magnetic declination at 

your location and changing settings on your 350 QX to get accurate compass 

measurements. It is possible, however, that your compass may need to be calibrated if it is exposed to strong magnetic fi elds. 

Compass calibration procedure:

1. Go to an open space outdoors away from metal. Take a conventional compass with you to ensure you know the direction of north.

2. Ensure your transmitter is off and then connect a fl ight battery to the 350 

QX. Power the aircraft on. Wait fi ve seconds and then the blue LED will 

begin fl ashing rapidly, signaling the aircraft is initialized and ready to bind.

3. Once the blue light begins fl ashing, bind with yaw stick left. The 350 QX LED 

will slowly fl ash between red and green for 5 seconds. 

4. Put the 350 QX fl at in your hands and face north. After 5 seconds of slow 

fl ashing the quad will start fl ashing rapidly. The quad is now collecting data 

to be used for the calibration.

5. Slowly rotate the quad 360 degrees about the east-west axis (“fl ip” the 

aircraft either forward or backward) until it is fl at in your hands again. 

6. Continue facing north and yaw the quad 45 degrees left so the quad is now 

facing north-west.

7. Slowly rotate the quad 360 degrees about the east-west axis, (“fl ip” the 

aircraft diagonally either direction) until it is fl at in your hands again.

8. Continue facing north and yaw the quad 45 degrees left so the quad is now 

facing west. 

9. Slowly rotate the quad 360 degrees about the east-west axis (“fl ip” the 

quad sideways either direction) until it is fl at in your hands again.

10. Continue facing north and yaw the quad 45 degrees left so the quad is now 

facing south-west. 

11. Slowly rotate the quad 360 degrees about the east-west axis (“fl ip” the 

aircraft diagonally either direction) until it is fl at in your hands again.

You have 30 seconds to complete the procedure. The 350 QX should still be 

blinking rapidly when you fi nish. Hold the aircraft still until it stops blinking rapidly. If successful, the 350 QX will beep a positive confi rmation and then restart 

itself. If unsuccessful, the 350 QX displays the failed calibration code, a solid 

white LED. If the 350 QX displays this error code, power off the aircraft and then 

begin the calibration procedure again. 

The pressure sensor is calibrated at the factory on the 350 QX. Recalibration 

should only be necessary if you replace the sensor. 

1. Place the 350 QX in a cold area. Allow it to remain in the cold for 30 minutes 

or more. 

2. Bring the 350 QX out of the cold and into a warm area. The greater the difference in temperature between the cold and warm areas, the more accurate the 

calibration will be.

3. Ensure your transmitter is off and then connect a fl ight battery to the 350 QX 

and power the aircraft on. Wait fi ve seconds and then the blue LED will begin 

fl ashing rapidly, signaling the aircraft is initialized and ready to bind.

4. Once the blue light begins fl ashing, bind with yaw stick right. The 350 QX will 

blink red and blue rapidly. Leave the aircraft and transmitter powered on and 

allow the aircraft to warm up for 10 minutes. Do not move the aircraft during 

this time.

5. After 10 minutes the motors on the aircraft will beep to indicate the calibration 

is complete. Power off the aircraft and then your transmitter. 

If the 350 QX displays the failed calibration code, power off the aircraft and then 

begin the pressure calibration procedure again. 

To calibrate the accelerometer, the quadcopter needs to fl y for 20 seconds while 

being level. This allows the accelerometer readings to be averaged and stored in 

memory.

Use the following procedure to calibrate the accelerometer:

1. Power on the quadcopter with the transmitter off to enter bind mode.

2. Turn on the transmitter while holding the elevator stick back and pressing 

the bind switch.

3. Set the fl ight mode switch to Stability Mode or Smart Mode. The quadcopter 

will fl y in Stability Mode no matter which position is selected.

4. Start the motors. Fly the quadcopter off the ground. The quadcopter LED will 

fl ash slowly (red, green, blue).

5. Use trims to adjust roll/pitch so the quadcopter does not drift left/right and 

forward/back.

6. Activate the accelerometer calibration mode by changing the fl ight mode 

switch into Agility Mode. The vehicle will still fl y in Stability Mode. The LED 

will start fl ashing quickly (red, green, blue).

7. Fly steadily for 10–30 seconds. The LED will fl ash slowly when data

collection is done.

8. Land the quadcopter and stop the propellers by lowering the throttle and

throttle trim.

IMPORTANT: The calibrated values are not yet permanently stored. Do not turn 

off the quadcopter.

9. Center the trims on the transmitter. Start the motors and verify the

quadcopter fl ies without drifting.

10. Land the quadcopter and stop the motors by lowering the throttle and

throttle trim.

11. Save the calibration by moving the rudder stick quickly left, right, left, right. 

Values are saved when you hear a rapid triple tone twice.

12. Turn off the quadcopter.

13. Confi rm the calibration by powering up the quadcopter and performing a test 

fl ight. If the calibration is not correct, start the calibration procedure again.

North

Step 5 Step 7 Step 9 Step 11
17 EN

Troubleshooting

Problem Possible Cause Solution

350 QX will not initialize The quadcopter was moved during initialization Re-arm the aircraft, being cautious to avoid any movement during 

initialization

Throttle trim is not in the correct position The trim may need to be adjusted a click above or below center

GPS will not lock

Heavy overcast Wait for lighter cloud cover and re-lock or disable GPS

Solar fl ares Wait for disturbance to subside or disable GPS

Aircraft is indoors Disable GPS

Objects blocking clear access to the sky

(under a metal cover, inside a car, tall buildings, etc...) Move aircraft to a clear area

Video transmitter nearby Re-position or remove video transmitter

GPS has reduced resolution

Raised threat level by the U.S. government Wait for threat level to be reduced or disable GPS

The GPS antenna coaxial cable is nicked, cut,

or otherwise damaged Replace the GPS antenna

GPS functions not operating 

properly

The compass has been exposed to a magnet Move the aircraft away from the magnetic source. In worst case scenario, the compass may need to be replaced

The GPS antenna coaxial cable is nicked, cut, or otherwise damaged Replace the GPS antenna

The aircraft is behaving erratically Rebind the aircraft with the GPS function off

Aggressive fl ight Fly level for a few seconds before fl ipping into other modes

Motors will not start in

Smart Mode

Rate mode switch set to low Set transmitter dual rate switch to hi

GPS signal is not aquired Ensure a GPS signal is aquired

Rudder trim not centered Center the rudder trim

Motors will not start in

Stability/Agility Mode

Rate mode switch set to low Set transmitter dual rate switch to hi

Rudder trim not centered Center the rudder trim

Blades take a long period of

time to shut off after completing 

return to home

Pressure calibration is needed Refer to the Pressure Sensor Calibration section of this manual

The quadcopter has trouble 

fi nding the home position and 

the props will not shut off after 

returning home

Accelerometer calibration is needed Refer to the Accelerometer Calibration section of this manual

ESC and Motor Assignment Procedure

Motor Numbers 1. Begin with the transmitter off and connect a fl ight

battery to the 350 QX.

2. Power on the quadcopter on a level surface and wait for 

the rapid blue fl ashing LED to indicate the aircraft has 

entered bind mode.

3. With the throttle stick in the full throttle position, press/

pull the bind button/switch and power on your transmitter. 

The quadcopter will acknowledge the assignment mode 

with a loud high, then low tone. If your transmitter is 

equipped with a high throttle warning at startup, it is necessary to disable this alarm prior to completing this step. 

After the replacement procedure is complete, re-activate 

the high throttle warning in your transmitter.

4. The motor number and prop direction are molded in the 

top of the body. The motors will give an audible “beep” to 

indicate which motor to calibrate. When the motors beep 

1 time, spin motor 1 by hand. The motor will respond with 

the same number of tones upon successful assignment. 

5. When the motors beep 2 times, spin motor 2 by hand.

6. When the motors beep 3 times, spin motor 3 by hand.

7. When the motors beep 4 times, spin motor 4 by hand.

When the assignment is successful, the quadcopter enters 

emergency mode. Restart the quadcopter.

Motor number 1

Motor number 4

Motor number 2

Motor number 3
EN 18

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/

4105 Fieldstone Rd 

Champaign, Illinois, 61822 USA

Horizon Product Support

(Product Technical Assistance)

www.quickbase.com/db/

bghj7ey8c?a=GenNewRecord

888-959-2304

Sales sales@horizonhobby.com

888-959-2304

United Kingdom Service/Parts/Sales:

Horizon Hobby Limited

sales@horizonhobby.co.uk Units 1–4 , Ployters Rd, Staple Tye

+44 (0) 1279 641 097 Harlow, Essex, CM18 7NS, United Kingdom

Germany Horizon Technischer Service service@horizonhobby.de Christian-Junge-Straße 1

Sales: Horizon Hobby GmbH +49 (0) 4121 2655 100 25337 Elmshorn, Germany

France Service/Parts/Sales:

Horizon Hobby SAS

infofrance@horizonhobby.com 11 Rue Georges Charpak

+33 (0) 1 60 18 34 90 77127 Lieusaint, France

China Service/Parts/Sales: 

Horizon Hobby – China

info@horizonhobby.com.cn Room 506, No. 97 Changshou Rd.

+86 (021) 5180 9868 Shanghai, China 200060

Limited Warranty

What this Warranty Covers

Horizon Hobby, Inc., (Horizon) warrants to the original purchaser that the product purchased (the 

“Product”) will be free from defects in materials and workmanship at 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) modifi cation 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, or (vi) Product not compliant with applicable 

technical 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 WARRANTIES 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 REQUIREMENTS 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 UNDER 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, fi nal assembly, modifi cation 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 

immediately in new and unused condition to the place of purchase.

Law

These terms are governed by Illinois law (without regard to confl ict of law principals). This 

warranty gives you specifi c 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 Horizon 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, please 

visit our website at www.horizonhobby.com, submit a Product Support Inquiry, 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 protection. 

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 accepted at our facility. An Online Service 

Request is available at http://www.horizonhobby.com/content/_service-center_render-servicecenter. 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 Li-Po batteries to Horizon. If you have any issue with a Li-Po battery, 

please contact the appropriate Horizon Product Support offi ce.

Warranty Requirements 

For Warranty consideration, you must include your original sales receipt verifying 

the proof-of-purchase date. Provided warranty conditions 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 notifi cation 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 notifi cation. Service estimates are available 

upon request. You must include this request with your item submitted for service. Non-warranty 

service estimates will be billed a minimum of 1⁄2 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 arranging 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 notifi cation, 

after which it will be discarded.
19 EN

Compliance Information for the European Union

Declaration of Conformity

(in accordance with ISO/IEC 17050-1)

No. HH2013080502

Product(s): BLH 350 QX RTF

Item Number(s): BLH7800, BLH7800M1

Equipment class: 2

The object of declaration described above is in conformity with the requirements 

of the specifi cations listed below, following the provisions of the European 

R&TTE directive 1999/5/EC, EMC Directive 2004/108/EC and LVD Directive 

2006/95/EC:

EN 300-328 V1.7.1: 2006

EN 301 489-1 V1.9.2: 2012

EN 301 489-17 V2.1.1: 2009

EN60950-1:2006+A11:2009+A1:2010+A12: 2011

EN61000-3-2:2006+A1:2009+A2:2009

EN61000-3-3:2008

EN55022:2010 + AC:2011

EN55024:2010

Signed for and on behalf of:

Horizon Hobby, Inc.

Champaign, IL USA

Aug 05, 2013

Declaration of Conformity

(in accordance with ISO/IEC 17050-1)

No. HH2013080503

Product(s): BLH 350 QX BNF

Item Number(s): BLH7880

Equipment class: 1

The object of declaration described above is in conformity with the requirements 

of the specifi cations listed below, following the provisions of the European 

R&TTE directive 1999/5/EC, EMC Directive 2004/108/EC and LVD Directive 

2006/95/EC:

EN 301 489-1 V1.9.2: 2012

EN 301 489-17 V2.1.1: 2009

EN61000-3-2:2006+A1:2009+A2:2009

EN61000-3-3:2008

EN60950-1:2006+A11:2009+A1:2010+A12: 2011

EN55022:2010 + AC:2011

EN55024:2010

Signed for and on behalf of:

Horizon Hobby, Inc.

Champaign, IL USA

Aug 05, 2013

Instructions for disposal of WEEE by users in the European Union

This product must not be disposed of with other waste. Instead, it is the user’s responsibility to dispose of their waste equipment by handing it over to 

a designated collections point for the recycling of waste electrical and electronic equipment. The separate collection and recycling of your waste equipment at the time of disposal will help to conserve natural resources and ensure that it is recycled in a manner that protects human health and the environment. For more information about where you can drop off your waste equipment for recycling, please contact your local city offi ce, your household 

waste disposal service or where you purchased the product.

AT BE BG CZ CY DE DK

EE ES FI FR GR HR HU

IE IT LT LU LV MT NL

PL PT RO SE SI SK UK

IS LI NO CH

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 modifi cations 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.

Antenna Separation Distance

When operating your Spektrum transmitter, please be sure to maintain a separation distance of at least 

5 cm between your body (excluding fi ngers, hands, wrists, ankles and feet) and the antenna to meet RF 

exposure safety requirements as determined by FCC regulations.

The following illustrations show the approximate 5 cm RF exposure area and typical hand placement 

when operating your Spektrum transmitter.

FCC Information

IC Information

This device complies with Industry Canada license-exempt RSS standard(s). 

Operation is subject to the following two conditions:

(1) this device may not cause interference, and (2) this device must accept any 

interference, including interference that may cause undesired operation of the 

device.

Robert Peak

Chief Financial Offi cer

Horizon Hobby, Inc.

Robert Peak

Chief Financial Offi cer

Horizon Hobby, Inc.
©2013 Horizon Hobby, Inc.

Blade, SAFE, SAFE Circle, the SAFE logo, Bind-N-Fly, the BNF logo, E-fl ite, Celectra, DSM, DSM2, DSMX,

and the Horizon Hobby logo are trademarks or registered trademarks of Horizon Hobby, Inc.

The Spektrum trademark is used with permission of Bachmann Industries, Inc.

US 7,391,320. Other patents pending. 

Created 9/13 42408