dji MAVIC PRO User guide

BRIGHTSKY DRONES
SYSTEMS MANUAL
BrightSky Drones
Volume 2: Systems
Aircraft Type: DJI Mavic Pro
Version 1.0: Dated 18 July 2018

BRIGHTSKY DRONES
VOLUME 2 (MP)
Copyright © BrightSky Drones 2018
Amendment Record
Change
Number
Change
Date
Incorporated by
Date
Incorporated
Initial Issue V1.0
Josh Jackson
18/07/2018

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Acronyms & Abbreviations
General
It should be noted that the terminology related to RPAS operations continues to evolve and
therefore this Glossary is not exhaustive. The terms listed below are a combination of the
emerging ICAO definitions, other 'common use' terms which are considered to be acceptable
alternatives, and a number of ‘legacy’ terms. Whilst these legacy terms will continue to be
recognised, in the interests of commonality the use of the following terminology is advised.
The abbreviation ANO refers to the Air Navigation Order. CAP 393 Air Navigation: The Order
and the Regulations includes the ANO and the Rules of the Air Regulations.
NOTE
The terms ‘pilot’ and 'Remote Pilot' are being increasingly used worldwide (including ICAO) to
describe the person who directly controls an unmanned aircraft and that trend is reflected in
this document. It should be noted, however, that within the United Kingdom there are many
legal requirements in the Air Navigation Order applicable to ‘pilots’. These references,
however, apply only to pilots in the traditional sense i.e. persons on board and flying the
aircraft. There are at present no legal requirements setting out the qualifications needed to
control an unmanned aircraft; this work is still to be completed.
Abbreviations
AAIB
Air Accidents Investigation Branch
ACAS
Airborne Collision Avoidance System
AIAA
Area of Intense Air Activity
AIP
Aeronautical Information Publication
ALARP
As Low as Reasonably Practicable
ANO
Air Navigation Order
ASD
Air Safety Directive
ASMS
Air Safety Management System
ATA
Aerial Tactics Area
ATC
Air Traffic Control

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ATCU
Air Traffic Control Unit
ATM
Air Traffic Management
ATS
Air Traffic Service
ATSU
Air Traffic Service Unit
ATZ
Aerodrome Traffic Zone
BMFA
British Model Flying Association
BNUC
Basic National UAS Certificate
BNUC-S
Basic National UAS Certificate-Small
BVLOS
Beyond Visual Line of Sight
FISO
Flight Information Service Officer
FMC
Flight Management Computer
FRC
Flight Reference Card(s)
FRTOL
Flight Radio Telephony Operators’ License
GCS
Ground Control Station
GPS
Global Positioning System
GUI
Graphical User Interface
HALE
High Altitude Long Endurance
HF
Human Factors
HIRTA
High Intensity Radio Transmission Area
HMI
Human-Machine Interface
ICAO
International Civil Aviation Organization
IFR
Instrument Flight Rules

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MALE
Medium Altitude Long Endurance
MATZ
Military Aerodrome Traffic Area
MEMS
Micro-Electro Mechanical Systems
MOR
Mandatory Occurrence Reporting
MTOM
Maximum Take-off Mass
NAA
National Aviation Authority
NOTAM
Notice to Airman
NPPL
National Private Pilot’s License
NQE (SUA)
National Qualified Entity (Small Unmanned Aircraft)
OEM
Original Equipment Manufacturer
PCM
Post-Crash Management
RA(T)
Restricted Area (Temporary)
RG UAS
Resource Group Unmanned Aviation Services
Drone
Remotely Piloted Aircraft
RPAS
Remotely Piloted Aircraft System / Remotely Piloted Air System
RPAS Cdr
Remotely Piloted Air System Commander
RPQ-S
Remote Pilot Qualification-Small
RPS
Remote Pilot Station
RTF
Radiotelephony
RTS
Release to Service
QTI
Qualified Training Instructor
SRG
Safety Regulation Group

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SUA
Small Unmanned Aircraft
SUSA
Small Unmanned Surveillance Aircraft
TDA
Temporary Danger Area
TQC2
Trained, Qualified, Competent and Current
UA
Unmanned Aircraft
UAS
Unmanned Aircraft System(s)
UAS-c
UAS Commander
UAS-p
UAS Pilot (legacy term)
UAV
Unmanned Aerial Vehicle(s) (legacy term)
UAV-p
UAV Pilot (legacy term)
VFR
Visual Flight Rules
VLOS
Visual Line of Sight

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Table of Contents
Amendment Record
Acronyms & Abbreviations
Contents
Systems Chapter 1
Design & Manufacturing Organisation 1.1
Design Flight Envelope 1.2
Air Vehicle Characteristics 1.3
Design Features 1.4
Construction 1.5
Electrical Power Provision and Distribution 1.6
Propulsion System 1.7
Fuel System 1.8
Flight Management System (FMS) 1.9
Navigation Guidance 1.10
Other Avionics 1.11
Landing Aids 1.12
Payloads 1.13
Emergency Recovery or Safety Systems 1.14
Modifications to the System 1.15
Command & Control C2 1.16
Whole System Points of Failure 1.17
Ground Control Station 1.18
Service Life, Maintenance Schedules & Inspections 1.19
Spares 1.20
Repair 1.21
Known Failure Modes 1.22
Failsafe Features 1.23
Transportation Requirements 1.24

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1 Systems
1.1 Design & Manufacturing Organisation
Item
Detail
Designer & Manufacturer:
DJI Innovations
DJI Headquarters
14th Floor, West Wing,
Skyworth Semiconductor Design Building,
No.18 Gaoxin South 4th Ave,
Nanshan District,
Shenzhen,
China, 518057.
Aircraft Name:
DJI Mavic Pro
Type:
Multi-Rotor (Quadcopter)
Distributor:
DJI

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1.2 Design Flight Envelope
Item
Detail
Ceiling Height:
<400ft As per VLOS rules
Operating Radius*:
<500m VLOS rules
Maximum Operating Altitude:
16,404ft AMSL
Maximum Operating Range
4,000m
Maximum Endurance (with payload):
Approximately 27 Minutes
MTOW
734g
Maximum Surface Wind for Take-off*:
10m/s (19.5Kts)
Maximum Operating Temperature:
40°c
Maximum Operating Speed:
18m/s (35kts)
Minimum Operating Temperature*:
0°c
Can operate in:
Dry weather, within wind tolerances.
*Flight in known icing conditions should be avoided.

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1.3 Air Vehicle Characteristics
Item
Detail
Dimensions: Airframe
Width: 83mm
Length: Width: 198mm
Height: 83mm
Weight with battery & props
734g
Power Source:
Lithium Polymer (Li-Po) Battery - 3830 mAh
Motor Type:
4 x Electric Brushless Motor
Battery Weight:
240g
Internal Components:
DJI Flight Controller including:
Solid State MEMS (Micro - Electro-
Mechanical- Systems) Gyros
Solid State MEMS Accelerometers
Magnetometers (Magneto resistive sensors)
1 x Barometric pressure sensor
1 x GPS unit
1 x Compass module
1 x Vision positioning module
Control Data Link
2.400 – 2.483 GHz @ 10mW
Transmitter Power (EIRP):
FCC:23dBm;CE:17dbm
Video data down link:
2.4GHz ISM
Antennas:
4 x Omni-Directional, Vertically Polarised.
Control Data Link:
7cm (2.7in) Antenna.
Video Data Downlink:
4 x Omni-Directional, Circularly Polarised, 70mm
Antenna.
Video / Control Link notes:
The Mavic Pro is controlled by DJI’s proprietary
quad-antennae design. Each of the four legs of the
Mavic Pro contains a high-powered antenna, all
constantly broadcasting the live video feed and
receiving control commands from any direction.

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1.4 Design Features
Item
Detail
Propulsion Layout:
Quadcopter design with corner positioned puller
rotors.
Modes of Operation
There are three flight modes available.
• P-Mode (Positioning): P-mode works best
when the GPS signal is strong. The aircraft
utilises the GPS and Obstacle Sensing
System to automatically stabilise itself,
navigate between obstacles or track a
moving object.
Advanced features such as Tap fly and
ActiveTrack are enabled in this mode.
• S-Mode(Sport): The handling gain values of
the aircraft are adjusted in order to enhance
the maneuverability of the aircraft in S-mode.
The maximum flight speed of the aircraft is
increased to 18 m/s in this mode. Note that
Obstacle Sensing System is disabled in this
mode.
• A-Mode (Attitude Mode): When neither the
GPS nor Obstacle Sensing System is
available, the aircraft will automatically
switch to this mode and only use its
barometer for positioning to control the
altitude.
1.5 Construction
Detail
Materials Used:
Plastic/Metal
Method of Construction:
Injection moulded frame housing internal components

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1.6 Electrical Power Provision & Distribution
Detail
Battery Weight:
240g
Cell Chemistry:
Lithium Polymer (LiPo)
Battery Power Output:
4 cell 11.4 volts / 3830mAh
Battery Design:
Standard Lithium Polymer
Battery Connectors:
DJI Independent Balance and Power – multi-
pin
1.7 Propulsion System
Detail
Motors:
4 x DJI Motors
Size – 30 x 27mm
Max Power – not known
Props:
76 x 210mm Propellers
1.8 Fuel system
See Section 1.6

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1.9 Flight Management System (FMS) and Flight Control System
Detail
Dimensions: GCS
Hand Held Control Transmitter
Video Data Down Link Receiver and Monitor
Hand-held Transmitter
Width: 145 mm
Length: 77 mm
Depth: 35 mm
Multiple Compatible Devices
Weight:
Hand-held Controller: 316g
Control Data Link:
2.4GhzGhz / 950 mA@3.7V using
Ocusync
Ground Station Antenna:
Control / Video Data Link:
2 Antennae
Omni-Directional, Vertically Polarised,
70mm Antenna using Ocusync
1.10 Navigation and guidance
• DJI Flight Controller including:
• Solid State MEMS (Micro-Electro-Mechanical-Systems) Gyros
• Solid State MEMS Accelerometers
• Magnetometers (Magneto resistive sensors)
• 1 x Barometric pressure sensor
• 1 x GPS unit
• 1 x Compass module
• 1 x Vision positioning module
1.11 Other Avionics
The Mavic Pro is equipped with an Obstacle Sensing System that constantly scans for
obstacles in front of it, allowing it to avoid collisions by going around, over or hovering.

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1.12 Landing aids
The DJI Mavic Pro has an auto land system when the failsafe is triggered, signal is lost or
battery is low. It will also avoid objects in its way when returning to base.
1.13 Payloads
The DJI Mavic Pro has an integral payload consisting of a three-axis gimbal & camera.
1.14 Emergency Recovery & Safety Systems
N/A
1.15 Modifications to the system
N/A
1.16 Command and Control (C2)
Control Data Link:
2.4Ghz to 2.483Ghz @ 10mW
Transmitter Power EIRP:
17dbm
Video data down link:
2.4GHz ISM @10mW

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1.17 Whole System Points of Failure
Note: A single point of failure (SPOF) is a part of a system that, if it fails, will stop the entire
system from working. SPOFs are undesirable in any system with a goal of high availability
or reliability. The following single points of failure have been identified for the BrightSky
Drones DJI Mavic Pro.
• Battery failure
• Motor failure
• Power distribution failure. (ESC, loose soldering, defective wiring).
• Blade failure
• Rotor blade attachment mechanism failure
• Control system failure
• Sensor failures
1.18 Ground Control Station
DJI Go 4, Drone Deploy, Any other compatible applications.
1.19 Service Life, Maintenance Schedules & Inspection
PREVENTATIVE MAINTENANCE
• All maintenance will be carried out in accordance with the manufacturer’s
specifications.

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1.20 Spares
All spares are inspected for damage / imperfections from the manufacturing / delivery
process on arrival to the maintenance facility.
1.21 Repair
BrightSky Drones endeavor to utilise manufacturer’s original parts.
Our philosophy acknowledges that a SUA/SUSA is made up of a large number of parts,
each critical to the operation of the craft.
Strict maintenance comes before any fee generating operation. BrightSky Drones RP’s
must inspect the SUA/SUSA in a controlled environment for damage before deploying on a
mission.
1.22 Known Failure Modes
Failure
Ref
Item
Potential Failure
Severity
Detection
Indicator
Risk Level
1.0
RTH
Failsafe
does not
work with
less than
6 Satellites.
Aircraft will hover in
existing position and
possibly descend into
a building / structure.
Severe
Fast blink of
LED lights
High – Risk of
damaging
property &
SUSA.

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1.23 Fail-safe Features
Return to home function on loss of transmitter signal.
Failsafe works to protect the aircraft if TX signal is lost. In the Fail-Safe mode, the flight
controller will automatically control the aircraft to hover or fly to the home point and land.
Manually switched Failsafe return to home function.
Manual Failsafe works to protect the aircraft in any event the operator is unable to carry on
flying. In the manual Failsafe mode, the flight controller will automatically control the
aircraft to hover or fly to the home point and land.
Low Voltage Protection
In order to prevent the aircraft from crashing or other harmful consequences caused by low
battery voltage, two levels of low voltage protection are available.
First Level Protection - LED Slow Warning - Red
LED Slow Warning & Go Home / Land
Second Level Protection - LED Fast Warning - Red
LED Fast Warning & Descend
1.24 Transportation Requirements
The BrightSky Drones SUA/SUSA are transported between locations within a suitable and
secure vehicle.
The DJI Mavic Pro is stored in a purpose made carry rucksack.
The rucksack holds the Mavic Pro, batteries, remotes, gimbal & camera.
All peripheral equipment is kept in a secure vehicle.