Ready to Drone, LLC

Brenden Duffy

117 Rutland Ave

Rockville Centre, NY 11570

Phone: 646-456-0644

Email: brenden.duffy@readytodrone.com

November 28, 2015

U.S. Department of Transportation

Docket Management System

1200 New Jersey Ave., SE

Washington, DC 20590

Dear Sir or Madam:

I, Brenden Duffy, am writing in my capacity as owner of Ready to Drone LLC, to amend the 

petition for exemption I submitted on July 27, 2015, which has been assigned FEDERAL 

DOCKET ID – FAA-2015-4666-0001 to add the following six additional small unmanned 

aircraft systems (sUAS):

1) 3D Robotics Aero-M

2) 3D Robotics X8-M

3) 3D Robotics Iris-Plus 

4) DJI Inspire 1 

5) DJI Phantom 3 Professional

6) DJI Spreading Wings S900

7) Ready to Drone X5

Additionally, I would like to amend my original request for exemption by striking out the 

Operator Requirement language on page nine, specifically, “The Pilot-In-Command of the E384 

will hold, at a minimum, a ground school Certificate and a third class medical certificate” and 

insert “The PIC will hold either an airline transport, commercial, private, recreational, or sport 

pilot certificate. The PIC will also hold a current FAA airman medical certificate or a valid U.S. 

driver’s license issued by a state, the District of Columbia, Puerto Rico, a territory, a possession, 

or the Federal government. The PIC will also meet the flight review requirements specified in 14 

CFR § 61.56 in an aircraft in which the PIC is rated on his or her pilot certificate.”

Accordingly, the revised language reflects the FAA’s current regulatory position with respect to 

the minimum PIC requirements. 

Sincerely, 

Brenden Duffy 
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Table of Contents

INTRODUCTION......................................................................................................................... 4

SMALL UNMANNED AIRCRAFT SYSTEMS........................................................................ 5

3D Robotics Aero - M ....................................................................................................... 5

Design and Operational Characteristics............................................................. 5

Performance and Limitations.............................................................................. 6

Operating Procedures........................................................................................... 6

Radio Frequency ................................................................................................... 7

Lost Link / Fail Safe.............................................................................................. 7

3D Robotics X8-M............................................................................................................. 8

Design and Operational Characteristics............................................................. 8

Performance and Limitations.............................................................................. 8

Operating Procedures........................................................................................... 9

Radio Frequency ................................................................................................... 9

Lost Link / Fail Safe............................................................................................ 10

3D Robotics Iris-Plus...................................................................................................... 11

Design and Operational Characteristics........................................................... 11

Performance and Limitations............................................................................ 11

Operating Procedures......................................................................................... 12

Radio Frequency ................................................................................................. 13

Lost Link / Fail Safe............................................................................................ 13

DJI Inspire 1.................................................................................................................... 14

Design and Operational Characteristics........................................................... 14

Performance and Limitations............................................................................ 15

Operating Procedures......................................................................................... 15

Radio Frequency ................................................................................................. 16

Lost Link / Fail Safe............................................................................................ 16
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DJI Phantom 3 Professional........................................................................................... 17

Design and Operational Characteristics........................................................... 17

Performance and Limitations............................................................................ 18

Operating Procedures......................................................................................... 18

Radio Frequency ................................................................................................. 19

Lost Link / Fail Safe............................................................................................ 19

DJI S900........................................................................................................................... 19

Design and Operational Characteristics........................................................... 19

Performance and Limitations............................................................................ 22

Operating Procedures......................................................................................... 22

Radio Frequency ................................................................................................. 22

Lost Link / Fail Safe............................................................................................ 23

RTD X5 Fixed Wing ....................................................................................................... 23

Design and Operational Characteristics........................................................... 23

Performance and Limitations............................................................................ 24

Operating Procedures......................................................................................... 24

Radio Frequency ................................................................................................. 25

Lost Link / Fail Safe............................................................................................ 25

Appendices

Appendix A 3D Robotics Aero-M Operation Manual

Appendix B 3D Robotics X8M Operation Manual

Appendix C 3D Robotics IRIS Plus Operation Manual

Appendix D DJI Inspire 1 User Manual

Appendix E DJI Phantom 3 Professional User Manual

Appendix F DJI Spreading Wings S900 User Manual

Appendix G DJI A2 Flight Control System Manual

Appendix H RTD X5 UAV Op Maint Manual 120215
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INTRODUCTION 

Below, one will find the following sections described in detail for each of the seven

sUAS Ready to Drone LLC seeks to add, pursuant to the FAA published document, “Pubic 

Guidance for Petitioners for Exemption Filed under Section 333,” specifically the instructions 

found on page five:

 Design and Operational Characteristics 

 Performance and Limitations

 Operating Procedures

 Radio Frequency

 Lost Link / Fail Safe

The below listed sUAS offer substantial safety benefits for aerial data collection, defined 

by the FAA as, “Aerial data collection includes any remote sensing and measuring by an 

instrument(s) aboard the UA. Examples include imagery (photography, video, infrared, etc.), 

electronic measurement (precision surveying, RF analysis, etc.), chemical measurement 

(particulate measurement, etc.), or any other gathering of data by instruments aboard the UA,” 

over the conventional operations using fixed wing or helicopters.

1) 3D Robotics Aero-M

2) 3D Robotics X8-M

3) 3D Robotics Iris-Plus 

4) DJI Inspire 1 

5) DJI Phantom 3 Professional

6) DJI Spreading Wings S900

7) Ready to Drone X5

 

Please note the first six aforementioned sUAS have precedence as they have already been 

granted for use in multiple Section 333 exemptions. Similarly, now that our Ready to Drone X5 

fixed wing has entered the market, we also request it be granted approval due to its size, weight, 

speed and the fact it meets the requirements prescribed by the FAA described in detail below. 

Therefore, this request to amend our petition for exemption submitted on July 27, 2015 is in the 

public interest and complies with the current FAA sUAS regulatory framework. 
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SMALL UNMANNED AIRCRAFT SYSTEMS

3D Robotics Aero - M

Design and Operational Characteristics

According to 3D Robotics, the Aero-M is an all-in-one solution for creating highresolution visual-spectrum aerial maps. The fixed-wing platform offers incredible 

endurance and scope of coverage, with 40 minutes of flight time and up to 250 acres of 

coverage area. It’s the perfect platform for regularly acquiring highly detailed and 

actionable data for large-scale operations such as farming, construction and conservation, 

as well as search and rescue and emergency response. The Aero-M has a lightweight and 

robust foam frame, which translates to less risk and cost per flight and multiplies the costeffectiveness of our platform.

The 3D Robotics Aero-M is used with the Pixhawk Flight Control Station. 

Pixhawk is an advanced autopilot system designed by the PX4 open-hardware project and 

manufactured by 3D Robotics. It features advanced processor and sensor technology 

from ST Microelectronics® and a NuttX real-time operating system, delivering incredible 

performance, flexibility, and reliability for controlling any autonomous vehicle.

The Pixhawk system includes integrated multithreading, a Unix/Linux-like 

programming environment, completely new autopilot functions such as Lua scripting of 

missions and flight behavior, and a custom PX4 driver layer ensuring tight timing across 

all processes. Pixhawk allows existing APM and PX4 operators to seamlessly transition 

to this system and lowers the barriers to entry for new users to participate in the exciting 

world of autonomous vehicles.

Specifications: 

Aircraft dimensions: 74 in (188 cm) wingspan, 51 in (129 cm) length

Motor: Tiger Motor AT2820-7 830 kV

Frame: Fixed wing

Propeller: Gemfan 11x7

Battery: 4S 6000 mAh 35C lithium polymer

Autopilot: 3DR Pixhawk V2.4.5

Firmware: ArduPlane 3.1.1

GPS: 3DR u-blox GPS with Compass (LEA-6H module, 5 Hz update)

Telemetry radio: 3DR Radio v2 (915 mHz or 433 mHz)

Aircraft weight (with battery): 6.8 lbs (3 kg)
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Performance and Limitations

Aircraft weight with battery: 6.8 lbs (3 kg)

Payload capacity: 1.1 lbs (500 g)

Radio range: 1 km

Flight time: 40 min (estimated) 

Maximum operational wind conditions: 25 mph

Minimum speed: 22 mph (9.8 m/s)

Operating Procedures

In terms of operating procedures, the below preflight inspection steps are 

strongly suggested to ensure safe flight operations of the 3D Robotics Aero-M

sUAS as described in Appendix A:

Before each flight, perform a physical component check, center of gravity 

check, and control checks in both manual and stabilize modes. If any of the 

components or assemblies in these checks are not secure, tighten the screws or use 

CA glue (super glue) to secure the components to the foam.

1) Examine the Aero to ensure that all components are secured in flight 

configuration.

a. Check that the wings, tail, and tail boom are fully assembled and 

securely attached.

b. Check that the propeller is secured tightly to the motor.

c. Check that the servo rods are secured to the servo horns with the blue 

clasps.

2) Check that the airspeed sensor is secured to the side of the Aero and the tube 

is free from obstructions.

3) With the battery connected and the lid secured, check that the Aero is 

correctly balanced for flight. Hold the Aero with one finger on each of the 

clear, plastic balancing points shown below. These points indicate the Aero’s 

center of gravity.

4) If the plane balances on your fingers, then the center of gravity is correct. If it 

won’t balance, adjust the position of the battery until you can balance the 

plane on two fingers. Flying the plane without the camera will affect the 

center of gravity. If you choose to fly without the camera, make sure to rebalance the center of gravity. 
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Radio Frequency

The 3D Robotics Aero-M will be operated on a 2.4 ghz frequency. 

NOTE: FCC license is not required to utilize the above frequency. 

Lost Link / Fail Safe 

The Aero-M is programmed with a set of failsafe behaviors to prevent a 

crash in the event of a loss of one of the data or communication channels required 

for autonomous flight. In the event of a loss of GPS or lost-link, the assigned precoordinated behavior will activate. To override the failsafe behavior, sometimes 

referred to as return to launch (RTL); use the controller to regain manual control. 

The below failsafe modes are described in Appendix A: 

Regaining Manual Control

To regain manual control during the mission, switch to fly-by-wire 

mode using the controller. If you’re a confident operator, switch to 

stabilize mode. If you observe instability in the Aero’s flight behavior or it 

the aircraft moves outside your designated safe flying area, switch to RTL. 

Turning off the controller will automatically trigger an RTL and can be 

used in an emergency situation as a hard recall command.

RC Controller Signal Failsafe

Physical obstructions and interference from nearby wireless signals 

can affect the Aero’s connection with the RC controller.

If the Aero loses contact with the controller, it will return to the 

launch point automatically and enter into a circle pattern above the launch 

point, indicated by a blinking yellow status LED.

If the controller failsafe is triggered, wait for the Aero to return to 

the launch point, then regain manual control and either land or restart the 

mission.

Low Battery Failsafe

Environmental conditions can affect power consumption. Use the 

Mission Planner Flight Data display to monitor the voltage of the battery 

during flight.

If the battery reaches 13.8 V, the Aero will return automatically to 

circle above the launch point, indicated by a blinking yellow status LED 

and a quick repeating tone
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3D Robotics X8-M

Design and Operational Characteristics

According to 3D Robotics, the X8-M is easy to fly and simple to operate. The X8-

M can take off and land even in the tightest areas, which makes the vehicle compatible 

with just about any type of terrain. And because the X8-M can fly at low altitudes and at 

slow speeds, it can capture images with a level of detail and precision that’s impossible to 

acquire with manned flights or satellite imagery.

The X8-M package includes a Canon S100 high-resolution 12 MP camera and the 

powerful image processing tool, Pix4Dmapper Mosaic 3DR Edition, to create highly 

accurate, georeferenced and orthorectified mosaics. Pix4Dmapper Mosaic 3DR Edition 

works specifically with the X8-M imaging system only. The X8-M ships in a customdesigned hard-top travel case to keep all the components of the mapping system protected 

and easily accessible, ensuring that you're always ready to map. X8-M stitches images 

only from the camera included with your 3DR mapping aircraft, including the Canon 

SX260 and S100. It is not compatible with GoPro cameras or other camera types not 

included with the 3DR Aero-M and X8-M.

Specifications:

Aircraft dimensions: 13.7 in x 20.1 in x 11.8 in (35 cm x 51 cm x 30 cm)

Motors: SunnySky V2216-12 800 kV II

Frame: Multi-Rotor (8 rotors) 

Propellers: APC 11X4.7 SFP (4), APC 11X4.7 SF (4)

Battery: 4S 10000 mAh 10C lithium polymer

Autopilot: 3DR Pixhawk V2.4.5

Firmware: ArduCopter 3.2

GPS: 3DR u-blox GPS with Compass (LEA-6H module, 5 Hz update)

Telemetry radio: 3DR Radio v2 (915 mHz or 433 mHz)

Aircraft weight (with battery): 7.7 lbs (3.5 kg)

Performance and Limitations

Aircraft weight with battery: 7.7 lbs (3.5 kg)

Payload capacity: .4 lbs (200 g)
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Radio range: .6 miles (1 km)

Flight time: 14 min (estimated)

Operating Speed: 1-17 m/s

Default Speed: 5 m/s

Maximum operational wind conditions: 25 mph

Operating Procedures

In terms of operating procedures, the below preflight checks are strongly 

suggested to ensure safe flight operations of the 3D Robotics X8-M sUAS as 

described in Appendix B:

Visual Check

Before flying, examine the X8 to verify the following:

1) All propellers are tightly attached in the correct order with the writing 

on each propeller facing the sky.

2) All propellers can spin without obstruction.

3) The antenna is oriented vertically.

Test Flight

Before flying the mission, fly a brief test flight to verify that the X8:

1) Responds to controls correctly in stabilize mode.

2) Holds position in loiter mode.

3) Correctly executes a return-to-launch command

Radio Frequency

The 3D Robotics X8-M will be operated on a 2.4 ghz frequency.

NOTE: FCC license is not required to utilize the above frequency.
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Lost Link / Fail Safe

The X8 is programmed with a set of failsafe behaviors to prevent a crash 

in the event of a loss of one of the data or communication channels required for 

autonomous flight. Although certain failsafes have assigned LED indicators and 

tones, it is unlikely that you will be able to see these at a distance. Monitor the 

Flight Data screen for failsafe indications. If a failsafe is triggered, the assigned 

behavior will activate. To override the failsafe behavior (RTL in most cases), use 

the controller to regain manual control.

Regaining Manual Control

To regain manual control during the mission, switch to fly-by-wire 

mode using the controller. If you’re a confident operator, switch to 

stabilize mode. If you observe instability in the Aero’s flight behavior or it 

the aircraft moves outside your designated safe flying area, switch to RTL. 

Turning off the controller will automatically trigger an RTL and can be 

used in an emergency situation as a hard recall command.

Ground Station Signal Failsafe 

Physical obstructions and interference from nearby wireless signals 

can affect the X8’s connection with the ground station. Use the Mission 

Planner Flight Data display to monitor the ground station connection 

strength during flight. If the X8 loses contact with the ground station for 

over five seconds, it will automatically return to the launch point and land.

RC Controller Signal Failsafe

Physical obstructions and interference from nearby wireless signals 

can affect the X8’s connection with the RC controller. If the X8 loses 

contact with the RC controller, it will return to the launch point 

automatically and land, indicated by a blinking yellow status LED.

Low Battery Failsafe

Environmental conditions can affect power consumption. Use the 

Mission Planner Flight Data display to monitor the voltage of the battery 

during flight. If the battery reaches 14 V, the X8 will land automatically 

at the current position, indicated by a blinking yellow status LED and a 

quick repeating tone.

GPS Failsafe

Enclosed areas, physical obstructions, and lack of available 

satellites can affect GPS strength. Use the Mission Planner Flight Data 
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display to monitor the GPS during flight. If the X8 loses GPS lock for 

over five seconds, it will land automatically at the current position.

Altitude Failsafe

The X8 has a 120 m altitude geofence enabled by default. If the 

geofence is breached, the X8 will automatically RTL.

3D Robotics Iris-Plus 

Design and Operational Characteristics 

According to 3D Robotics, 3DR IRIS+ is your aerial passport: all you need to get

started shooting photos and video from incredible new perspectives. Powered by 3DR’s 

world famous autopilot, IRIS+ is a robot that will automatically fly itself where you tell it 

to go, while keeping a camera dead steady with two-axis gimbal stabilization.

It’s so smart that it’s simple. You can fly manually using the controller or use the 

advanced 3PV Follow Me mode that turns IRIS+ into your own hands-free camera crew. 

And our tablet-based software makes flight planning exactly this easy: If you can draw it, 

you can fly it. The IRIS+ power system gets you 16 minutes of flight time fully loaded, 

and you’ll want to fill every second. IRIS+ includes the advanced Pixhawk autopilot 

system, a high-capacity flight battery, battery charger, ground station radio, and remote 

controller: everything you need to make IRIS+ your personal aerial photographer.

Specifications:

Aircraft dimensions: Motor to motor dimension: 550mm, Height 100mm

Motors: 920 kV

Frame: V shape multirotor (4 rotors) 

Propellers: 9.5 x 4.5 T-Motor multirotor self-tightening counterclockwise (2)

 9.5 x 4.5 T-Motor multirotor self-tightening clockwise (2)

Battery: 3S 5.1 Ah 8C lithium polymer

Autopilot: Pixhawk v2.4.5

Firmware: ArduCopter 3.2

GPS: 3DR u-blox GPS with Compass (LEA-6H module, 5 Hz update)

Telemetry radio: 3DR Radio v2 (915 mHz or 433 mHz)

Aircraft weight (with battery): 1282 g

Performance and Limitations

Aircraft weight with battery: 1282 g
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Payload capacity: 400 g (.8 lbs)

Radio range: 1 km (.6 miles)

Flight time: 16-22 minutes (estimated) 

Operating Speed: 1-17 m/s

Default Speed: 5 m/s 

Operating Procedures

In terms of operating procedures, the below preflight checks are strongly 

suggested to ensure safe flight operations of the 3D Robotics Iris Plus sUAS as 

described in Appendix C:

Select an open area for flying, away from people and buildings, and

remember to bring the Flight Checklist and a fully charged battery. Determine the 

boundaries of your flying area before takeoff, and select a level, unobstructed 

space as a launch point. Follow these preflight and postflight steps in the order 

shown here and on the Flight Checklist every time you fly.

1) Check Iris 

 Point the controller antenna up and the IRIS antenna down for the 

strongest signal.

 Set the mode switch to standard (STD). 

If you’re new to flying, try starting your first flight in loiter (LTR) 

instead of standard.

 Ensure that the RTL switch is set to OFF.

2) Power on Controller

 Ensure that the controller is always turned on while IRIS is powered. 

If IRIS loses communication with the controller in flight, IRIS will 

initiate an automatic return to launch.

 Press and hold the DN button on the controller to view flight data from 

IRIS. See the Flight Checklist for more information about controller 

flight data.

3) Connect Battery 

 Press the sides of the battery compartment together and rotate the door 

down.
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 Insert battery, and attach the yellow connectors. To close, squeeze the 

door, and rotate up until it clicks into place, ensuring that the battery 

cables do not interfere with the LED cables.

 Place IRIS at the launch point with the black arms facing towards you 

and the blue arms facing away from you.

 Connect the radio to your ground station, and select Connect. 

4) Press Safety Button 

 Press the safety button until it is solid red. IRIS is now live.

Stand back!

5) Check LED

 Check the LED to view the status of IRIS. Wait to proceed until you 

see the blinking green light indicating that IRIS has acquired GPS 

lock.

Radio Frequency

The 3D Robotics Iris Plus will be operated on a 2.4 ghz frequency. 

NOTE: FCC license is not required to utilize the above frequency. 

Lost Link / Fail Safe

Environmental factors, such as wind and GPS irregularities, can cause 

instability in flight. IRIS will attempt to compensate for these factors by 

triggering a failsafe if it detects an unsafe flying condition due to loss of controller 

signal, loss of GPS signal, or low battery (see below for details). To avoid 

potential hazards due to environmental factors, identify the boundaries of your 

flying area before takeoff, and recover IRIS manually by switching into standard 

(STD) if it moves outside your designated flying area.

Loss of RC signal

Always use the controller as a primary or backup control system when 

flying. Ensure that the controller is turned on any time IRIS is powered. If contact 

with the controller is lost during flight, IRIS will land and display a blinking 

yellow LED. If IRIS is more than 2 meters (6.5 feet) from the launch point, it will 

return to launch (RTL) before landing. (See page 13 for more information about 

RTL.)

Loss of GPS signal

IRIS requires an active GPS signal before takeoff. If IRIS loses GPS 

signal in flight, it will trigger a GPS failsafe, indicated by a blinking blue and 
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yellow LED with a high-high-high-low tone, and automatically switch to manual 

control (standard - altitude hold mode). Always be prepared to regain manual 

control of IRIS at any time while flying and choose an unobstructed flying area to 

improve GPS signal strength. When flying a mission, we recommended changing 

the GPS failsafe behavior to land. (Visit 3dr.com/iris/info for more information 

about configuring the GPS failsafe.)

Low battery

When the battery reaches 25% of its remaining charge, IRIS will land and 

display a blinking yellow LED with a quick repeating tone. If IRIS reaches the 

low battery limit during a mission, it will return to the launch point before 

landing.

DJI Inspire 1 

 Design and Operational Characteristics 

According to DJI’s Inspire 1 User Manual, attached as Appendix D, the Inspire 1 

is brand new quadcopter capable of capturing 4K video and transmitting an HD video 

signal (up to 2km) to multiple devices straight out of the box. Equipped with retractable 

landing gear, it can capture an unobstructed 360 degree view from its camera. The built 

in camera has an integrated gimbal to maximize stability and weight efficiency while 

minimizing space. When no GPS signal is available, Vision Positioning technology 

provides hovering precision. 

Specifications:

Weight: (Battery Included) 2935 g

Hovering Accuracy (GPS mode) Vertical: 0.5 m

Horizontal: 2.5 m

Motor Model DJI 3510H

Propeller Model DJI 1345T

Indoor Hovering Enabled by default

Operating Temperature Range -10° to 40° C

Diagonal Distance 559 to 581 mm

Dimensions 438x451x301 mm
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Power Spectral Density 9.06mW/MHz

BATTERY (STANDARD)

Name: Intelligent Flight Battery

Model: TB47

Capacity: 4500 mAh

Voltage: 22.2 V

Battery Type: LiPo 6S High voltage battery

Operating Temp Range: -10° to 40° C

Charging Temp Range: 0° to 40° C

Max Charging Power: 180 W

Performance and Limitations

Max Angular Velocity Pitch: 300°/s

Max Tilt Angle 35°

Max Ascent Speed 5 m/s

Max Descent Speed 4 m/s

Max Speed 22 m/s (ATTI mode, no wind)

Max Wind Speed Resistance 10 m/s

Max Flight Time Approximately 18 minutes

Max Radio Range: 3.1 miles (unobstructed, free of interference)

Operating Procedures

In terms of operating procedures, the below preflight checks are strongly 

suggested to ensure safe flight operations of the DJI Inspire 1 sUAS as described 

in Appendix D:
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Preflight Checklist

1) Check that all parts are in good condition. Do not fly with aging or damaged 

parts.

2) Remote controller, Intelligent Flight Battery and mobile device are all fully 

charged.

3) Propellers are mounted correctly and securely.

4) Lens is clear.

5) Micro-SD card has been inserted, if necessary.

6) Gimbal is functioning as normal.

7) Gimbal is correctly attached to the aircraft.

8) Motors can start and are functioning as normal.

9) The DJI Pilot app can connect to the camera and all firmware has been 

updated to the latest version.

Radio Frequency

The DJI Inspire 1 will be operated on a 2.4 ghz frequency. NOTE: FCC 

license is not required to utilize the above frequency.

Lost Link / Fail Safe

For a comprehensive list and detailed description of the failsafe and lost 

link protocols for the DJI Inspire 1, refer to the Aircraft Section, specifically, page 

12 through page 16 in Appendix D. 

Low Battery RTH

The low battery level failsafe is triggered when the DJI Intelligent Battery 

is depleted to a point that may affect the safe return of the aircraft. Users are 

advised to return home or land the aircraft immediately when these warnings are 

shown. DJI pilot app will advise user to return the aircraft to the home point 

when low battery warning is triggered. Aircraft will automatically return to home 

point. 
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Failsafe RTH

Failsafe RTH is activated automatically if remote controller signal 

(including video relay signal) is lost for more than 3 seconds provided that Home 

Point has been successfully recorded and compass is working normally. Return 

home process may be interrupted and the operator can regain control over the 

aircraft if a remote controller signal is resumed. 

 

DJI Phantom 3 Professional 

Design and Operational Characteristics 

EASY TO FLY

The Phantom 3 fits into your life and makes flying remarkably intuitive 

and easy. From takeoff to landing, it's completely under your control, responding 

to your commands while automatically handling the most complex aspects of 

safe, stable flight.

GPS-ASSISTED HOVER

Never lose track of your Phantom 3. GPS and GLONASS combine to 

make the Phantom 3 completely aware of its location and relation to you. It 

hovers more precisely, moves more accurately, and locks onto satellites faster. 

With the new availability of GLONASS, a minimum of 36 satellites are available 

to you around the world at any time. 

VISION POSITIONING SYSTEM

The Phantom 3 literally helps you fly. It processes information from every 

sensor and completes complex calculations in real time, giving you a worry-free 

flight experience that: Through the DJI GO app, you can track its location on a 

live map, and record your takeoff point so you can bring it back to you with the 

tap of a finger.

Specifications:

Weight (including battery and propellers) 1280 g

Diagonal size (including propellers) 590 mm

Hover Accuracy Vertical: +/- 0.1 m 

Horizontal: +/- 1.5 m

Operating Temperature 0°C to 40°C
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GPS Mode GPS/GLONASS

Operating Frequency 2.400 GHz-2.483 GHz

Battery (Intelligent) 

Capacity: 4480 mAh

Voltage: 15.2 V

Battery Type: LiPo 4S

Net Weight: 365 g

Max Flight Time: Approximately 23 minutes

Operating Temperature: -10°C to 40°C

Max Charging Power: 100 W

Performance and Limitations

Max Ascent Speed 5 m/s

Max Descent Speed 3 m/s

Max Speed 16 m/s (ATTI mode, no wind)

Max Flight Time Approximately 23 minutes

Max Radio Range 3.1 miles 

Operating Procedures

In terms of operating procedures, the below preflight checks are strongly 

suggested to ensure safe flight operations of the DJI Phantom 3 Professional as 

described in Appendix E:

Preflight Checklist

1) Check that all parts are in good condition. Do not fly with aging or damaged 

parts.

2) Remote controller, Intelligent Flight Battery and mobile device are all fully 

charged.

3) Propellers are mounted correctly and securely.

4) Lens is clear.
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5) Micro-SD card has been inserted, if necessary.

6) Gimbal is functioning as normal.

7) Gimbal is correctly attached to the aircraft.

8) Motors can start and are functioning as normal.

9) The DJI Pilot app can connect to the camera and all firmware has been 

updated to the latest version.

Radio Frequency

The DJI Phantom 3 Professional will be operated on a 2.4 ghz frequency. 

NOTE: FCC license is not required to utilize the above frequency.

Lost Link / Fail Safe

For a comprehensive list and detailed description of the failsafe and lost 

link protocols for the DJI Phantom 3 Professional, refer to the Aircraft Section, 

specifically, page 10 through page 15 in Appendix E. 

Low Battery RTH

The low battery level failsafe is triggered when the DJI Intelligent Battery 

is depleted to a point that may affect the safe return of the aircraft. Users are 

advised to return home or land the aircraft immediately when these warnings are 

shown. DJI pilot app will advise user to return the aircraft to the home point 

when low battery warning is triggered. Aircraft will automatically return to home 

point. 

Failsafe RTH

Failsafe RTH is activated automatically if remote controller signal 

(including video relay signal) is lost for more than 3 seconds provided that Home 

Point has been successfully recorded and compass is working normally. Return 

home process may be interrupted and the operator can regain control over the 

aircraft if a remote controller signal is resumed. 

DJI S900

Design and Operational Characteristics

According to DJI’s Spreading Wings S900 User Manual Version 1.2, attached as 

Appendix F, the DJI S900 is designed for professional aerial photography and 

cinematography. It is user friendly, safe, stabilized and easy to fly while its integrated 

design makes assembly and configuration simple and fast. Retractable landing gear, 
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vibration dampers, slightly angled arms and a minimalized gimbal mount allow for a 

clear 360 degree view from the camera. A patented power distribution board, built in 

high-speed ESC’s and motors with high efficiency propellers ensure dynamic stability 

and maximized power efficiency. Used with the DJI A2 Flight Control System User 

Manual Version 1.2, attached as Appendix G, the S900 can hover and fly reliably making 

it ideal for photography and cinematography. 

Please refer to the attached appendices for additional detailed information 

pertaining to these sections which is consistent with the instructions found on page five of 

the FAA document titled, “Pubic Guidance for Petitioners for Exemption Filed under 

Section 333.” 

1. Safe and stable

(1) The S900’s V-type mixer design provides large amounts of propulsion while 

improving power efficiency. Combined with DJI flight controllers like the A2, it 

is guaranteed to remain stable even with the loss of a rotor.

(2) A more reliable, safe, and simplified power wiring system is easy to setup, and 

eliminates the need for soldering. The main power cord uses an AS150 sparkproof plug and an XT150 plug, preventing creators from mixing up polarity when 

plugging in the battery, and also helping prevent short circuits.

(3) All frame arms and the retractable landing gear are made from carbon fiber, 

ensuring lightweight and high structural stability.

2. Professional hexacopter

(1) Weighing approximately 3.3kg with a maximum takeoff weight of about 

8.2kg, the S900 can easily carry equipment such as the Zenmuse gimbal systems 

and a set of shooting equipment. Used with a 6S 16000mAh battery it can fly for 

up to 18 minutes.

(2) The gimbal is mounted low on the frame on a specifically designed bracket. 

When combined with our retractable landing gear, we have a very wide range of 

possible shooting angles.

(3) The gimbal and battery are mounted to the same bracket, with dampers placed 

between the bracket and the frame. This significantly reduces high-frequency 

vibrations and makes shots clearer and sharper. The battery tray's position also 

makes it more stable and convenient for mounting and dismounting.

3. Portable and easy to use

(1) All six arms can be folded down, and the 1552 folding propellers can be 

tucked away, minimizing the S900’s size during transport.
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(2) To fly, simply lift the frame arms up, lock them in place with the red clips, and 

power up the system. This greatly saves on pre-flight prep time and you can be 

ready to fly in less than 5 minutes.

(3) The upper center plate can be removed quickly, making it convenient and 

efficient to arrange or change the power system, control system, and other 

accessories.

4. Easy to control and fly

(1) Each frame arm is designed with an 8° inversion and a 3° inclination, making 

the aircraft more stable when rolling and pitching, and more flexible when 

rotating.

(2) Each frame arm has a built-in 40A electronic speed controller (ESC). When 

combined with the 4114 pro motor and high performance 1552 folding propellers, 

the S900 is capable of a maximum thrust of 2.5Kg.

Specifications: 

Frame

Diagonal Wheelbase - 900mm

Frame Arm Length - 358mm

Frame Arm Weight (with Motor, ESC, Propeller) - 316g

Center Frame Diameter - 272mm

Center Frame Weight (with Landing Gear Mounting Base, Servos) -

1185g

Landing Gear Size - 460mm (Length)×450mm(Width)×360mm(Height)

Motor

Stator Size - 41×14mm

kV - 400rpm/V

Max Power - 500W

Weight (with Cooling Fan) - 158g

ESC

Working Current: 40A

Working Voltage: 6S LiPo
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Signal Frequency: 30Hz ~ 450Hz

Drive PWM Frequency: 8KHz

Weight (with Radiators): 35g

Foldable Propeller (1552/1552R)

Material: High strength performance engineered plastics

Size: 15×5.2 inch

Weight: 13g

Performance and Limitations 

Takeoff Weight: 4.7Kg ~ 8.2Kg

Total Weight: 3.3Kg

Power Battery: LiPo (6S, 10000mAh ~ 15000mAh, 15C (Min))

Max Power Consumption: 3000W

Hovering Power Consumption: 1000W (@6.8Kg Takeoff Weight)

Hovering Time: 8min (@12000mAh & 6.8Kg Takeoff Weight)

Working Environment Temperature: -10°C ~ 40°C

Operating Procedures

In terms of operating procedures, the below preflight inspection steps are 

strongly suggested to ensure safe flight operations of the DJI S900 sUAS as 

described in Appendix G:

1) Check that all parts are in good condition, no aging or damaged 

components

2) Motor rotating direction

3) Propeller Mounting Direction

4) Mixer Type set in assistant software

5) IMU and GPS-COMPASS PRO mounting direction

6) Transmitter channel mapping and sticks movement direction correct

7) Compass Calibration 

8) ESC Connection

9) IMU and GPS-COMPASS PRO firmly mounted 

Radio Frequency

The DJI S900 will be operated on a 2.4 ghz frequency. NOTE: FCC 

license is not required to utilize the above frequency. 
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Lost Link / Fail Safe 

The DJI S900 A2 failsafe works when the transmitter signal is lost, the 

flight control system will automatically control the aircraft to reduce injuries or 

damage. 

Home point is recorded prior to flight. If the S900 loses signal with the 

transmitter, it will reference home point to return to take off position. If the S900 

is below a predetermined altitude which is based on specific environment 

conditions, the S900 will climb to that predetermined altitude and hover. After 

hovering at that altitude for ten seconds, it will then fly to the pre-set home point 

and hover for 10 seconds. After the S900 hovers for ten seconds over the pre-set 

home point, it will descend and land at the home point. After it lands, the S900 

will shut off. 

Please refer to Appendix G, page three, steps one through six for a more 

detailed description of the failsafe modes and procedures when signal is lost.

RTD X5 Fixed Wing

Design and Operational Characteristics 

The RTD X5 is an all-in-one solution for creating high-resolution visualspectrum and/or Near Infrared (NIR) spectrum aerial maps. The swept fixed-wing 

platform offers incredible endurance given its small form factor and light weight. 

With an average flight duration of 50 minutes and up to 300 acres of coverage 

area, it’s the perfect platform for regularly acquiring highly detailed and 

actionable spatial data. Some disciplines that can benefit from the RTD X5 

capabilities include large-scale operations such as farming, construction and 

conservation, as well as search and rescue and emergency response. The RTD X5 

has a lightweight (2.46 lbs including battery and mapping camera) and robust 

foam frame, which translates to low risk and cost per flight and multiplies the 

cost-effectiveness of our platform.

The RTD X5 is controlled by the APM or Pixhawk Flight Control System 

running Arduplane firmware. APM and PixHawk are advanced autopilot system 

designed by 3D Robotics and the PX4 open-hardware project and manufactured 

by 3D Robotics. Both flight controllers offer incredible performance, flexibility, 

and reliability for controlling any autonomous vehicle. The PixHawk provides the 

ability to store data on an micro SD card allowing additional mapping capabilities 

such as Raw GPS data capture for advanced Real Time Kinematics (RTK) post 

processing.

Specifications: 
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Aircraft dimensions: 39 in (99 cm) wingspan, 21.6 in (55 cm) length

Motor: Sunny Sky x2212-7 980 kV

Frame: Fixed wing

Propeller: APC 9x6

Battery: 3S 5200 mAh 20C lithium polymer

Autopilot: 3DR Pixhawk / APM 2.5/6

Firmware: ArduPlane 3.3.0

GPS: 3DR u-blox GPS with Compass (LEA-6H module, 5 Hz update)

Telemetry radio: 3DR Radio v2 (915 mHz)

Aircraft weight (with battery and camera): 2.5 lbs (1.13 kg)

Performance and Limitations

Aircraft weight with battery: 2.07 lbs (941 kg) 

Radio range: 1.5 km

Flight time: 50 min (estimated) 

Maximum operational wind conditions: 25 mph

Minimum speed: 20 mph (9.8 m/s)

Operating Procedures

In terms of operating procedures, the below preflight inspection steps are 

strongly suggested to ensure safe flight operations of the RTD X5 sUAS. 

Additionally, refer to Appendix H for detailed information on operating and 

maintenance procedures:

Before each flight, perform a physical component check, center of gravity 

check, and control checks in both manual and stabilize modes. If any of the 

components or assemblies in these checks are not secure, tighten the screws or use 

CA glue (super glue) to secure the components to the foam.

1) Examine the X5 to ensure that all components are secured in flight configuration.

a. Check that the main battery and camera are securely mounted

b. Check that the propeller is secured tightly to the motor.

c. Check that the servo rods are secured to the servo horns with the 

compression fasteners.
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2) With the battery connected and the lid secured, check that the X5 is correctly 

balanced for flight. Hold the X5 with one finger on each of the foam balancing 

points below wings. These points indicate the X5’s center of gravity.

3) If the plane balances on your fingers, then the center of gravity is correct. If it 

won’t balance, adjust the position of the battery so that it is properly seated in the 

forward-most position. Flying the plane without the camera will affect the center 

of gravity. If you choose to fly without the camera, make sure to re-balance the 

center of gravity. 

Radio Frequency

The RTD X5 will be operated on a 2.4 ghz frequency. NOTE: FCC 

license is not required to utilize the above frequency. 

Lost Link / Fail Safe 

The RTD X5 is programmed with a set of failsafe behaviors to prevent a 

crash in the event of a loss of one of the data or communication channels required 

for autonomous flight. In the event of a loss of telemetry or or R link, the 

assigned pre-coordinated behavior will activate. To override the failsafe behavior, 

sometimes referred to as return to launch (RTL); use the controller to regain 

manual control. The below failsafe modes are described in Appendix H: 

Regaining Manual Control

To regain manual control during the mission, switch to fly-by-wire 

mode using the controller. If you’re a confident operator, switch to 

stabilize mode. If you observe instability in the X5’s flight behavior or if 

the aircraft moves outside your designated safe flying area, switch to RTL. 

Turning off the controller will automatically trigger an RTL and can be 

used in an emergency situation as a hard recall command.

RC Controller Signal Failsafe

Physical obstructions and interference from nearby wireless signals 

can affect the X5’s connection with the RC controller.

If the X5 loses contact with the controller, it will return to the 

launch point automatically and enter into a circle pattern above the launch 

point.
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If the controller failsafe is triggered, wait for the X5 to return to the 

launch point, then regain manual control and either land or restart the 

mission.

Low Battery Failsafe

Environmental conditions can affect power consumption. Use the 

Mission Planner Flight Data display to monitor the voltage of the battery 

during flight.

If the battery reaches 10.3 V, the X5 will return automatically to 

circle above the launch point or a programmed “rally point”. If RC control 

cannot be regained and/or telemetry connectivity is lost, the X5 will reach 

a low Voltage cutoff of the integrated Battery Eliminator Circuit (BEC), at 

which point the motor power will be cut. The X5 will retain full flight 

control and continue to glide in a circular pattern around the rally or 

launch location until it lands.