# AIRCRAFT FLIGHT MANUAL

770-00048 | REVISION A | 03.23.2016

# REVISION HISTORY

ALTA 8 AIRCRAFT FLIGHT MANUAL PART NUMBER: 770-00048 

# REVISION DATE DESCRIPTION
A March 2016 Initial Release3 

# CONTENTS

2 Re vision History 3 Contents

6 

### AL TA 8 OVERVIEW 7 Disclaimer and W arning 9 Limit ation of Liability 11 Introduction 12 Symbols, Abbr eviations and Terminology 15 Dimensions 17 Included It ems 18 Specifications 22 Limitations 24 Sys tem Diagrams 28 AL TA Mobile App 28 Additional Requir ed Components (not included)

29 

### SETTING UP ALTA 8 30 Unf olding/Folding ALTA 8 33 Radio Ins tallation 38 Radio Mapping 43 Configuring f or MōVIs 45 Isolat or Cartridges 46 Batt ery Installation 51 Compas s Calibration 54 Propellers 56 Fir st Person View (FPV) 63 T uning ALTA 8 66 AL TA 8 Flight Parameters 69 Resetting ALTA 8 WiFi Password

70 

### OPERA TING ALTA 8 71 Flight Contr oller Modes 74 Home Swit ch4 75 Disarm Saf ety Switch 76 St atus Light 78 Alarms 79 Orient ation Lights 80 AL TA App Monitor 81 Dat a Logging

82 

### NORMAL PROCEDURES 83 Unpacking and Setup 84 Bef ore Starting 86 Bef ore Takeoff 88 Aft er Every Flight 90 Aft er Last Flight

91 

### EMERGENC Y PROCEDURES 92 Emer gency Guidance 93 St atus Light Warning Indicator Illuminates 94 Pil ot Disorientation 95 Une xpected Flight Controller Behavior 96 Batt ery Exhaustion 97 Los s of Radio Control Signal 98 Los s of FPV Signal

99 

### PERF ORMANCE 100 W eight / Endurance Performance Data 101 All owable Gross Weight Gross Weight

102 

### MAINT AINING ALTA 8 103 Gener al Information and Techniques 104 Maint enance Items 108 Firmwar e Update Process 109 Mot or Alignment 112 Guidelines F ollowing an Accident5 113 

### TROUBLESHOO TING

116 

### APPENDIX 117 Appendix A. Def ault Tuning Values 118 Appendix B. Dat a Logging Fields6 

# AL TA 8 OVERVIEW7 

# DISCLAIMER AND WARNING
IMPORTANT - Please read this disclaimer and warning carefully and review the ALTA 8 Aircraft Flight Manual (AFM) prior to flight. If you have any questions, please contact support@freeflysystems.com prior to using the ALTA 8. You can review the most current version of this AFM at www.freeflysystems.com/software-manuals/. By using ALTA 8, you acknowledge that you have read, understand and agree to this disclaimer. You agree that you are solely responsible for your conduct while using ALTA 8, and for any direct or indirect consequences that may result from its use. You agree to only use ALTA 8 for proper purposes that are in accordance with local and airspace rules and regulations.

» AL TA 8 is not a toy and should be operated with extreme care, as improper operation can cause damage to property, serious personal injury or death.

» As with any multi-r otor aircraft, ALTA 8 is a complex and technical machine. Novice pilots should invest sufficient time on a flight simulator and seek training from an experienced pilot prior to operation. The ALTA 8 Aircraft Flight Manual and a flight simulator are no substitute for training with an experienced pilot, particularly when it comes to learning how to safely operate ALTA 8. Novice pilots should never fly without the supervision of an experienced pilot.

» Al ways check ALTA 8 and its components prior to operation.

» Al ways maintain a safe distance from ALTA 8 when in use.

» Ne ver attempt to touch ALTA 8 when the propellers are moving.

» Ne ver fly ALTA 8 over or around people, power lines or other aircraft.

» Ne ver fly with any propellers that have visible imperfections or damage.

» Al ways keep children and animals a safe distance away from ALTA 8 when in use and when changing configurations.

» Onl y use propellers supplied by Freefly Systems that are designed for use on ALTA 8.

» Al ways remove the propellers or power ALTA 8 using a low power source when making a change to the configuration of ALTA 8 to prevent propeller strikes in the event of unintentional motor starts.

» Al ways remove the configuration jumper when making changes to the configuration of ALTA 8.

» Al ways test ALTA 8 with the propellers removed to make sure that the motors are spinning in the correct direction and that the motor assignment is correct with respect to the Synapse flight controller. If you have either of these wrong, the ALTA 8 will be uncontrollable and dangerous.8 » It is y our responsibility to perform a full system check of ALTA 8 prior to every flight.

» It is y our responsibility to learn how to safely operate ALTA 8 and to adhere to all applicable rules and regulations.

» Fl y at your own risk.

» AL TA 8 is a tuned system with custom components selected for each application. Modification to, removal, or substitution of ALTA 8 components will void the warranty and can lead to unsafe operating conditions.9 

# LIMITATION OF LIABILITY IN NO EVENT SHALL FREEFLY BE LIABLE TO BUYER FOR ANY INDIRECT, CONSEQUENTIAL, PUNITIVE, INCIDENTAL, OR SPECIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF ALTA OR FROM LOSS OF USE, DATA OR PROFITS (HOWEVER CAUSED AND UNDER ANY THEORY OF LIABILITY), EVEN IF FREEFLY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. IN NO EVENT SHALL FREEFLY’S LIABILITY FOR A PRODUCT (WHETHER ASSERTED AS A TORT CLAIM, A CONTRACT CLAIM OR OTHERWISE) EXCEED THE AMOUNTS PAID TO FREEFLY FOR SUCH PRODUCT. NOTWITHSTANDING ANYTHING HEREIN, IN NO EVENT SHALL FREEFLY’S LIABILITY FOR ALL CLAIMS ARISING OUT OF OR RELATING TO THIS AGREEMENT EXCEED THE AMOUNTS PAID BY BUYER TO FREEFLY FOR PRODUCT IN THE LAST TWELVE (12) MONTHS. IN NO EVENT WILL FREEFLY BE LIABLE FOR COSTS OF PROCUREMENT OR SUBSTITUTE GOODS BY BUYER. THE LIMITATIONS SET FORTH HEREIN SHALL APPLY TO ALL LIABILITIES THAT MAY ARISE OUT OF THIRD-PARTY CLAIMS AGAINST BUYER. THESE LIMITATIONS SHALL APPLY NOTWITHSTANDING ANY FAILURE OF ESSENTIAL PURPOSE OF ANY LIMITED REMEDY. Freefly shall not be liable for damages or injuries incurred directly or indirectly from the use of ALTA 8 including, but not limited to, the following situations:

» F ailure of operator to follow proper instructions and safety warnings found at www.freeflysystems.com.

» F ailure of the operator to understand and operate the aircraft within the operating limitations described in this manual.

» F ailure of the operator to follow onboard safety warnings while using ALTA 8.

» F ailure of the operator to follow and comply with local rules and regulations.

» F ailure of the operator to inspect ALTA 8 and its components prior to operation.

» F ailure of the operator to properly maintain and/or service ALTA 8 through an authorized Freefly Service Center with genuine ALTA 8 parts.

» Use of thir d-party products on ALTA 8.

» Use of AL TA 8 in a physically or mentally impaired capacity.

» Use of AL TA 8 without sufficient training.

» Use of AL TA 8 in unsafe conditions, including but not limited to, bad or severe weather, such as rain, wind, snow, lightning, dust storms, etc., or in areas of magnetic or radio interference, such as power stations, broadcasting and cell phone towers, government prohibited airspace, etc.

» Impr oper operation, misjudgment or risky behavior while using ALTA 8.10 » Infringement of thir d party data, audio or video rights recorded when using ALTA 8.11 

# INTRODUCTION
ALTA 8 is a professional multi-rotor aircraft designed for demanding cinematic, television, and photographic applications. Within five minutes, ALTA 8 can unfold from its carrying case to flying some of the most capable cinema cameras on either the top or bottom of the aircraft. The SYNAPSE flight controller is purpose-built for cinema use, yielding precise yet smooth control. This Aircraft Flight Manual has been prepared to describe the complete operation of airframe and flight control systems, and the normal maintenance of those items. Do not operate ALTA 8 without reading and understanding this manual. This manual is not a substitute for adequate flight training. Training requirements can vary when operating in different countries or under different flight conditions. Always consult local regulations before flying ALTA 8. In areas where there are no flight training requirements, it is the sole determination of the pilot-in-command as to whether he or she has the appropriate level of training or experience for a given flight. Always set and adhere to personal minimums and fly within your own capabilities.12 

# SYMBOLS, ABBREVIATIONS AND TERMINOLOGY
WARNINGS, CAUTIONS AND NOTES Throughout the manual, warnings, cautions and notes are used to highlight various important procedures. These are defined as follows:



### WARNINGWarnings are used to highlight procedures which, if not strictly observed, may result in personal injury or loss of life. 

### CAUTIONCautions are used to highlight procedures which, if not strictly observed, may cause damage to equipment. 

### NOTE Notes are used to highlight specific operating conditions or steps of a procedure.



# METEOROLOGICAL TERMINOLOGY

ISA International Standard Atmosphere in which: The air is a dry, perfect gas; The temperature at sea level is 15° Celsius (59° Fahrenheit); The pressure at sea level is 1013.2 mbar (29.92 inches Hg); The temperature gradient from sea level to the altitude at which the temperature is -56.5°C (-69.7°F) is -0.00198°C (-0.003564°F) per foot and zero above that altitude MSL Mean Sea Level is the average height above the surface of the sea for all stages of tide AGL Above Ground Level is the height of the aircraft above the ground OAT Outside Air Temperature is the free air static temperature surrounding the aircraft13 Pressure Altitude Altitude measured from standard sea level pressure (1013.2 mbar, 29.92 in. Hg) by a pressure or barometric altimeter It is the indicated pressure altitude corrected for position and instrument error. In this Manual, altimeter instrument errors are assumed to be zero 

# POWER TERMINOLOGY

Maximum Continuous Power Output The maximum typical power output of a motor averaged over the entire flight Maximum Instantaneous Peak Power Output The maximum power output of a motor during any phase of flight, such as when maneuvering 

# FLIGHT AND POWERPLANT CONTROL Throttle Stick The radio controller stick responsible for throttle control. For Mode 2 controllers, this is the vertical movement of the left control stick. For Mode 1 controllers, this is the vertical movement of the right control stick Yaw Stick The radio controller stick responsible for yaw (also called pan) control For Mode 2 and Mode 1 controllers, this is the lateral movement of the left control stick Pitch Stick The radio controller stick responsible for pitch control. For Mode 2 controllers, this is the vertical movement of the right stick For Mode 1 controllers, this is the vertical movement of the left stick Roll Stick The radio controller stick responsible for roll control. For Mode 2 and Mode 1 controllers, this is the lateral movement of the right control stick Pitch/Roll Stick or Cyclic Stick The radio control stick responsible for both pitch and roll control For Mode 2 controllers, this is the right stick14 

# WEIGHT AND BALANCE

Maximum Takeoff Weight (MTOW) Maximum allowable weight at liftoff Standard Empty Weight Weight of a standard aircraft Basic Empty Weight Standard empty weight plus optional equipment Useful Load Difference between take off weight and basic empty weight Payload Useful load less battery weight 

# GENERAL TERMINOLOGY sUAS Small Unmanned Aircraft System includes all components of the system required for the flight of an unmanned aircraft, including the radio controller, data link and other related support equipment15 

# DIMENSIONS

457 (18.0)

220 (8.6)
1325 (52.1)

220 (8.6) 360 (14.1) 1

2

3

4 5 6 7 8 1325 (52.1) 1720 (67.7)

UNFOLDED PLAN VIEW WITH BOOM NUMBERING SCHEME MM (INCH) 457 (18.0)

220 (8.6)
1325 (52.1)

220 (8.6) 360 (14.1) 1

2

3

4 5 6 7 8 1325 (52.1) 1720 (67.7)

UNFOLDED SIDE VIEW WITH LANDING GEAR MM (INCH) 457 (18.0)

220 (8.6)
1325 (52.1)

220 (8.6) 360 (14.1) 1

2

3

4 5 6 7 8 1325 (52.1) 1720 (67.7)

UNFOLDED FRONT VIEW WITHOUT LANDING GEAR MM (INCH)16 660 (25.9)

615 (24.2)

250 (9.8)

260 (10.2) FOLDED SIDE VIEW MM (INCH)

660 (25.9)

615 (24.2)

250 (9.8)

260 (10.2) FOLDED PLAN VIEW MM (INCH) 660 (25.9)

615 (24.2)

250 (9.8)

260 (10.2)

FOLDED FRONT VIEW MM (INCH)17 

# INCLUDED ITEMS

1. Case 2. ALTA 8 3. Case Lid Foam 4. Isolator Cartridges
a. (6) Teal (Installed) b. (6) Black
c. (6) Red 5. Documentation 6. E lectronic Luggage Scale 7. USB-Futaba Power Cable 8. Inverted Landing Gear 9. Antenna Tubes 10. FPV Cables
a. Skyzone/BOSCAM b. BOSCAM, small connector
c. ImmersionRC/Fat Shark d. Ready Made RC 11. (2) M3 × 6 Flat Head for Accessory Mount 12. Quick Release Battery Tray 13. 5.5mm Wrench 14. Hex Drivers (1.5mm, 2.0mm, 2.5mm) 15. Accessory Mount 16. Double-Sided Tape **16**18 

# SPECIFICATIONS

DIMENSIONS Unfolded Diameter (does not include Props) 1325 mm
Folded Diameter (does not include Props) 660 mm Height to base of Toad In The Hole (TITH) 263 mm 

# POWERPLANT

Number of Motors 8 Motor Type Direct Drive 3-Phase PMAC Outrunner Motor Make and Model Freefly F45 Motor Max Continuous Power Output 350 W Motor Max Instantaneous Peak Power Output 950 W Maximum RPM (flat rated) 6300 RPM Equivalent Kv 384 Electronic Speed Controller Freefly Silent-Drive Sine Wave ESC 

# PROPELLERS

Make and Model Freefly ALTA Propeller Material Carbon fiber with balsa core Propeller Orientation (4) CW and (4) CCW Props Propeller Type 18 × 6 Folding 

# BATTERY

Nominal Battery Voltage 6S / 22.2V Maximum Battery Size 240 × 180 × 80 mm Maximum Battery Quantity 2 Battery Packs (Parallel) Minimum Battery Quantity 2 Battery Packs (Parallel) Battery Connectors 2 × EC5 (Parallel) Required Minimum Battery Discharge Rating (Per Pack) 250A / 500A Peak19 

# WEIGHTS

Maximum Gross for Takeoff 1 18.1 kg (40.0 lbs) Maximum Useful Load 2 12.0 kg (26.4 lbs) Maximum Payload 3 9.1 kg (20.0 lbs) Typical Standard Empty Weight: 6.2 kg (13.6 lbs)


### WARNING Always refer to the following aircraft limitations section for complete information on allowable maximum gross weights at different altitudes and temperatures before any flight.



# SPECIFIC LOADINGS Typical Specific Power 4 145 W/kg Thrust Ratio at MTOW 1 1.85 : 1

1 At sea level, ISA. Refer to the Weight Limitations section for complete loading information.

2 Top and bottom mount. Includes batteries.

3 Payload weight top or bottom mount. Battery weight not included and mounted on opposite side from payload.

4 At MTOW, sea level, ISA.20 

# FLIGHT CONTROLLER

Model Name Freefly SYNAPSE flight controller Flight Modes Manual, Height Mode, Position Mode, Return-To-Home, Autoland Supported Inputs: DSMX, DSM2, S.Bus, S.Bus2, PPM, FPV SD Supported Radios Futaba S.Bus & S.Bus2, DSMX, DSM2 (Spektrum/JR), PPM, PPM Invert, PPM Graupner Supported Radio Controller Telemetry Systems Futaba w/ built-in voltage sense port
Minimum Radio Controller Channels Required ›5 Supported GNSS GPS, GLONASS, Galileo Supported SBAS QZSS, WAAS, EGNOS, MSAS First-Person View System Video Formats NTSC, PAL Supported First-Person View Transmitters Skyzone, BOSCAM, ImmersionRC, Fat Shark Supported First-Person View Cameras Ready Made RC First-Person View OSD Telemetry User Configurable Installed Transceivers Wi-Fi Data Logging Rate 25 Hz 

# LIGHTING AND INDICATION Status Light 1 Watt Red, 1 Watt White LED Orientation Lights 3-Watt RGB LED Orientation Light Color Options Red, Yellow, Blue, Green, White 

# ISOLATION SYSTEM Vibration Isolation System Silicone O-Rings Option 1: Soft / Light Payloads Red O-Rings Option 2: Medium / Medium Payloads Teal O-Rings Option 3: Stiff / Heavy Payloads Black O-Rings21 

# PAYLOAD MOUNTING

Mounting Locations Bottom and Top Mount Mounting System Freefly Toad In The Hole (TITH) Quick Release FPV Camera Mount Between Booms 8 & 1 FPV Transmitter Mount Boom 222 

# LIMITATIONS

NOTE These limitations are advisory in nature and do not extend or restrict limitations provided by Governing Aviation Authorities.


# POWERPLANT LIMITATIONS

Maximum RPM 6300 RPM Maximum Battery Voltage 25.2 Volts Minimum Average Battery Voltage 19.2 Volts 

# ENVIRONMENTAL LIMITATIONS

Do not fly ALTA 8 in temperatures exceeding 45oC (113oF) or below -20oC(-4oF). 5 

# FLIGHT CONTROLLER LIMITS

Maximum Pitch/Roll Angle 45° Maximum Yaw Rate 150° / second

5 Must additionally observe battery temperature ratings.23 

# WEIGHT LIMITS

Maximum Payload 9.1 kg (20.0 lbs) Maximum Takeoff Weight See following tablePress Alt FtMaximumGross Weight(lb)40.040.039.237.836.435.133.832.631.330.229.018.118.117.817.216.515.915.314.814.213.713.240.039.337.836.535.233.932.631.430.229.128.018.117.839.337.917.216.515.915.414.814.213.713.212.736.635.234.032.731.530.329.228.127.017.817.216.616.015.414.814.313.813.212.712.338.036.735.434.132.831.630.529.328.227.226.117.216.616.015.514.914.313.813.312.812.311.936.835.534.233.031.830.629.528.427.326.325.316.716.115.515.014.413.913.412.912.411.911.5MaximumGross Weight(kg)MaximumGross Weight(lb)MaximumGross Weight(kg)MaximumGross Weight(lb)MaximumGross Weight(kg)MaximumGross Weight(lb)MaximumGross Weight(kg)MaximumGross Weight(lb)MaximumGross Weight(kg)S.L.100020003000400050006000700080009000100000oC10oC20oC30oC40oCALTA 8 ALLOWABLE GROSS WEIGHTAs altitude and temperature increase, the density of the air decreases. Consequently, ALTA 8’s thrust will decrease. Thefollowing table describes maximum gross weight limits with respect to altitude and temperature.24 

# SYSTEM DIAGRAMS

s UAS OVERVIEW

ALTA App

FPV Rx, Preview Monitor*

*NOT INCLUDED Radio Controller* GPS Satellite

2.4GHz M ō VI Controller* HD Video Link, Preview Monitor*25 

## FLIGHT CONTROL

C A N P W M

Status Light ESC ESC

ESC

ESC

ESC ESC 8 Position Lights A.

B. B. Futaba Receiver or Generic Receiver S.BUS, S.BUS 2 or PPM A. Spektrum Receiver

DSMX, DSM 2 SYNAPSE

Flight Controller26 

## POWER SYSTEM

EC5 Connector

Flight Battery Flight Battery SYNAPSE

Flight Controller Futaba Tel. Motor Lights Motor Lights

Motor Lights

Motor Lights

Motor Lights Motor Lights Motor Lights Motor Lights

FUSE F P V C A M F P V TxRECIEVER

FUSERECIEVER

REGULATORS 12v 5v 5v27 

## FPV EQUIPMENT

FPV Camera Lead Pre-installed FPV Camera (not included)

FPV Camera Cable

FPV Tx Lead Pre-installed FPV Tx Cable Boscam/Skyzone or Fat Shark/ImmersionRC

FPV Tx (not included)

SYNAPSE

Flight Controller28 

# ALTA MOBILE APP

The ALTA App is used to configure ALTA 8 parameters, update ALTA 8 firmware, and to monitor ALTA 8’s status during flight. To download the ALTA App, search for “Freefly ALTA” in the App Store or on Google PlayTM. Parameters may only be adjusted while ALTA 8 is on the ground and disarmed. In addition, radio mapping parameters can only be adjusted when the Configuration Jumper is removed. For more information on radio mapping, see the Radio Mapping section of this manual. The ALTA App will be actively maintained, and additional functionality may be added over time. For information on individual app updates, refer to the App release notes.


### NOTE When making configuration changes with the ALTA App, wait three seconds for the app to automatically save changes to ALTA 8 before shutting off the app or the mobile device. 

# ADDITIONAL REQUIRED COMPONENTS (NOT INCLUDED)

RADIO CONTROLLER ALTA 8 supports a variety of radio controllers as outlined in the Flight Controller Specifications. A minimum of five (5) channels are required, with four (4) used for flight control, and the remaining one (1) used for mode selection. However, a radio controller with at least 9 channels is highly recommended to make use of Velocity and Climb Rate Clamps, Return-To-Home, and Disarm Safety functions. It is recommended to use a radio controller with a three way switch for the Mode and Home functions, a two way switch for the disarm safety function, and a knob or slider input for both the Velocity and Climb Rate Clamp functions. 

# FLIGHT BATTERY ALTA 8 can accommodate a variety of Lithium Polymer (LiPo) flight battery packs. Battery packs must be 6S, having a nominal voltage of 22.2 V. Only run ALTA 8 using two packs at a time. Each pack must have a continuous discharge rating of 250 amps or greater, and a peak discharge rating of 500 amps or greater. For additional information on expected flight durations, refer to the Performance Section of this manual.29 

# SET TING UP ALTA 830 

# UNFOLDING ALTA 8
ALTA 8 features swan-neck booms that fold into a compact size fortravel. They are secured in an open position for flight using overcenter latches. 

# TO UNFOLD ALTA 8
1. Remo ve ALTA 8 from case 2. F old down all eight boom retention clips

3. Open AL TA 8 booms31 4. Snap shut all eight boom lat ches until they “click”

5. Visuall y confirm all latches are seated properly

6. Remo ve prop protectors32 

# TO FOLD ALTA 8 1. Secur e props with prop protectors

2. Unlat ch all eight booms

3. Cl ose ALTA 8 booms

4. F old up all eight boom retention clips to secure booms33 

# RADIO INSTALLATION

RADIO CONTROLLER RECEIVER ALTA 8 requires the installation of a radio control system. S.Bus, S.Bus2, DSM2, DSMX, and PPM (including inverted PPM and Graupner) receiver types are supported. Additionally, ALTA 8 supports radio receiver diversity using S.Bus, S.Bus2, DSM2 and DSMX receivers. This means two receivers may be installed, and the SYNAPSE flight controller will automatically use the receiver with the best signal quality. Using two receivers requires the radio controller to be bound to both receivers. Refer to the instructions provided with your radio controller to complete the binding process. For Spektrum/JR radios, a receiver is required to bind the satellites to a radio controller.
FOR FUTABA AND PPM RECEIVERS 1. Loc ate the noted closeout panels used for receiver installation (between booms 2 & 3 and 6 & 7). PPM and Graupner receivers can only use the position between booms 2 & 3.

2. Remo ve side closeout panel with radio wires using a 2.0mm hex driver34 3. Plug signal wir e into receiver

4. If using t elemetry, plug in telemetry wire (refer to the Voltage Temeletry section)

5. F eed receiver antenna into lower antenna tube

6. Secur e receiver using the provided double sided tape to inside of receiver housing

7. Reatt ach closeout panel35 8. Rout e antenna wires into the two antenna tubes below ALTA 8 chassis

9. Repeat s teps 1-8 for dual receivers (only applies to Futaba receivers) FOR SPEKTRUM/JR: 1. Loc ate the noted closeout panels used for Spektrum/JR receiver installation (between booms 3 & 4 and 7 & 8)

2. Remo ve side closeout panel using a 2.0mm hex driver

3. F eed signal cable through panel grommet36 4. Reatt ach closeout panel

5. Plug in r eceiver/satellite into signal cable

6. Att ach receiver/satellite to exterior using double sided tape

7. Repeat s teps 1-6 for dual receivers37 

# VOLTAGE TELEMETRY ALTA 8 supports battery voltage telemetry on Futaba radios using a receiver that supports an external voltage sensor, such as the R7008SB. Installing the telemetry wire is easiest when initially installing the receiver. To set up ALTA 8 with voltage telemetry for Futaba radios: 1. Remo ve the closeout panel between booms 2 and 3 with a 2.0mm hex driver and locate the radio receiver wire bundle

2. Identify the v oltage sense wire and connector in the bundle. It is the small, 2-pin connector attached to a black and red wire pair 

### NOTE This wire is already connected to an in-line fuse. Soldering a fuse into this wire is not required.
3. Connect the c able to the external voltage sense port on the Futaba receiver

4. Reatt ach the closeout panel38 

# RADIO MAPPING

ALTA 8 can be used with a variety of radio controllers. Different radio controllers can map functions to different channels, so properly mapping controller channels to ALTA 8 functions is an important step before flying. Radio mapping is performed using the ALTA App. This section describes the steps required to complete radio mapping. If you are uncertain about your channel mapping, obtain assistance from an experienced pilot or from Freefly Customer Support. 

# CONFIGURATION JUMPER A small jumper is used to prevent motor operation while configuring radio mapping parameters. With the jumper in place, the motors may operate, but channel mapping is prevented. With the jumper removed, channel mapping may take place, but motor operation will be prevented. To remove or replace the Configuration Jumper: 1. Loc ate the closeout panel between booms 5 and 6 where the jumper is installed

2. Remo ve the closeout panel using a 2.0mm hex driver39 3. Remo ve or replace the jumper as needed

4. Reatt ach the closeout panel 

# MAPPING RADIO CHANNELS USING ALTA APP Channel mapping is accomplished with the ALTA App. Prior to mapping channels, ensure your radio controller and receivers are properly installed. Refer to the Radio Installation section of this manual and your radio controller’s documentation. 1. Remo ve the Configuration Jumper


### WARNING Always ensure the Configuration Jumper is removed prior to adjusting radio settings to prevent unintentional motor starts.

2. P ower ALTA 8 using a battery pack or by plugging in the included USB-Futaba cable into an available port on a Futaba receiver 3. Open the AL TA App and connect to ALTA 8 4. Open Configur ations > Radio 5. Open each AL TA 8 function and adjust the channel to the desired channel number, and use the toggle to invert the orientation of a control 6. Ensur e proper channel selection by moving the control input on the radio controller and verifying the displayed graph in the ALTA App responds correctly


### WARNING Ensure proper channel mapping prior to flight. Incorrect mapping can lead to immediate loss of control.40 ONCE CHANNELS ARE MAPPED 7. Remo ve the battery or USB-Futaba cable from ALTA 8 8. Replac e the Configuration Jumper 

# FUNCTION DESCRIPTIONS The following functions can be mapped to radio controller channels. These are found in the Radio section of the Configurations menu in the ALTA App. Each function is also represented by a chart that responds to control input allowing for quick verification of mapping settings.
CONTROLLER Use this to select the appropriate receiver. The following guide is compiled for convenience. For complete specifications and which mode will work with your receiver, refer to your radio controller or receiver manuals.

» DSM2/DSMX ar e typically used by Spektrum and some JR controllers.

» SBUS is typic ally used by Futaba controllers.

» PPM is a generic s tandard used by many controllers and receivers.

» PPM Inv ert is the same as PPM except channel inputs are reversed.

» PPM Gr aupner interprets Graupner radio PPM inputs. PITCH/ROLL/YAW/THROTTLE The Pitch, Roll, Yaw and Throttle controls are the basic flight controls and are mapped to the two radio controller sticks.
MODE The required Mode Switch selects between the three different flight modes: Manual, Height and Position. A three-position switch is recommended to select the three different modes. However, a two-position switch may be used, but will only allow for selecting between Manual Mode and (depending on radio controller mixes) either Position Mode or Height Mode
HOME SWITCH The optional Home Switch selects between the different Return-To-Home (RTH) functions. A three-position switch is required for the Home Switch functions to select between the Set New Home Position, RTH Off, and initiate RTH functions.
VELOCITY AND CLIMB RATE CLAMP Velocity and Climb Rate Clamps set the maximum ground speed or vertical speed available in Height Mode and Position Mode. The clamps can be adjusted mid-flight. An analog dial or slider is recommended for the Velocity and Climb Rate Clamp Functions.41 DISARM SAFETY The Disarm Safety Switch aids in preventing accidental motor disarming while the ALTA is in flight and in manual mode. It may be mapped to either a two-position or three-position switch. To set up the Lockout Switch, refer to the Mapping Channels section or the ALTA Aircraft Flight Manual.
ALL FUNCTIONS The meaning of the direction or position of the indicator is described in the following table for all mappable parameters. The top and right positions on the radio mapping indicators represent 2000μs, and the bottom and left positions represent 1000μs, and the middle position represents 1500μs.

FUNCTION IN-APP INDICATOR POSITION INDICATES

Pitch Top Nose Up Bottom Nose Down
Roll Left Roll Left Right Roll Right
Yaw Left Nose Left Right Nose Right
Throttle Top High Throttle Bottom Low Throttle

Mode Top Position Middle Height Bottom Manual

Home Top Set New Home Position Middle RTH Off Bottom Initiate RTH Velocity Clamp Top Fast Bottom Slow Climb Rate Clamp Top Fast Bottom Slow Disarm Safety Top On - Disarming Not Possible Middle & Bottom Off - Disarming Possible



# TYPICAL CHANNEL MAPPINGS42 The following are channel mapping configurations as set in the ALTA App. These are recommendations only. Depending on exact radio models, these may help as an initial configuration. However, it is up to the pilot setting up ALTA 8 for flight to determine if these settings are appropriate. FUTABA 14SG/8FG FUNCTION CHANNEL NUMBER DIRECTION Pitch 2 Normal Roll 1 Normal Yaw 4 Normal Throttle 3 Reverse Mode 5 Normal Home Switch 6 Reverse Disarm Safety 9 Reverse Velocity Clamp 8 Reverse Climb Rate Clamp 7 Reverse
SPEKTRUM DX18

FUNCTION CHANNEL NUMBER DIRECTION Pitch 3 Reverse Roll 2 Reverse Yaw 4 Reverse Throttle 1 Normal Mode 6 Reverse Home Switch 7 Reverse Disarm Safety 8 Normal Velocity Clamp 10 Normal Climb Rate Clamp 11 Normal43 

# CONFIGURING FOR M ō VI
A MōVI can be attached to either the top or bottom of ALTA 8 via the Freefly Toad In The Hole (TITH) quick release. ALTA 8 comes pre-configured for GroundView mounting a MōVI. 

# GROUNDVIEW
1. Pr epare your MōVI for both GroundView and SKyView flight (see MōVI manual)

a. Att ach landing gear b. Ins tall TITH receiver on MōVI 2. Connect MōVI t o bottom Toad



# SKYVIEW

CAUTION Top mounting is not supported by the MōVI M10.

1. Pr epare your MōVI for SkyView flight
a. Remo ve landing gear (see MōVI manual) b. Ins tall TITH receiver on MōVI (see MōVI manual)44 2. Connect and secur e the supplied inverted landing gear to the bottom Toad

3. Remo ve Battery Mount Quick Release

4. Connect MōVI t o top Toad45 

# ISOLATOR CARTRIDGES
Different Isolator Cartridges can be used to fine tune vibration damping performance for different payload weights. Three isolation cartridge styles are provided with ALTA 8. The cartridges have o-rings colored red for light payloads, teal for medium payloads, and black for heavy payloads. Flight testing may be required to determine the optimal isolator for a given setup.

To install, place the cartridges between the top chassis plate and the battery plate. Ensure they are engaged in the track features and are parallel with the chassis and battery plate. Push inwards fully until they click, indicating the cartridges are locked in place. Pull outwards on the cartridge to ensure it is locked in place.


### CAUTION Always ensure isolator cartridges are locked in place before flying ALTA 8. Isolator cartridges that are not locked can cause the payload to loosen and change ALTA 8’s fundamental flying characteristics.

To remove, pinch the cartridge latch to unlock it from the battery and chassis plate. Simultaneously pull the battery and chassis plate apart while pulling the cartridge outward.46 

# BATTERY INSTALLATION

Batteries may be installed on either the top or bottom of an ALTA 8 and are always mounted opposite of the payload location. In both locations, battery packs are secured with silicone straps tensioned across the packs. The straps are secured using studs located on either side of the packs.



### WARNING Always secure battery packs with both battery retention straps.



### CAUTION Ensure both battery packs are at a similar state of charge (a full pack voltage difference less than 0.5V) prior to connecting them to ALTA 8. Plugging in two dissimilarly charged packs could cause one pack to rapidly discharge into the other and damage the batteries or cause a battery fire.



### CAUTION Only use packs that are identical in their capacity and at a similar condition. Using a pack with another that is larger, or has many more cycles, can damage the battery packs.



### CAUTION Always refer to and follow the battery manufacturer’s instructions, recommendations and guidelines for battery handling.



### CAUTION When plugging in battery packs, ensure the polarity is correct. Positive is indicated by a red power lead, and negative/ground is indicated by a black power lead. Reversing polarity will damage ALTA 8’s electronics.47 

# GROUNDVIEW
1. Plac e battery retention strap studs at the appropriate height for battery packs

2. Adjus t battery stops to fit battery packs

3. Att ach the single-hole end of the battery retention straps to the studs48 4. Plac e battery packs on battery tray



### CAUTION Do not install batteries on a tray with the Toad In The Hole adapter installed. If installing batteries without the Battery Mount Quick Release for GroundView, remove the Toad adapter first.

5. T ension and secure battery retention straps49 

# SKYVIEW

CAUTION Always completely secure the inverted landing gear by closing the TITH quick release lever. Inverted landing gear that are not completely attached can rotate and unplug battery leads.

1. Pinch the batt ery tray handles and slide to remove it from landing gear

2. Att ach the single-hole ends of the battery retention straps to the studs on the battery tray

3. Plac e battery packs onto battery tray50 4. T ension and secure battery retention straps

5. Slide tr ay with battery packs back into landing gear

6. Ensur e tray and battery packs are secure51 

# COMPASS CALIBRATION

For best results, it is recommended to perform manual compass calibrations away from ferrous objects, buildings and vehicles. In addition, concrete can contain steel rebar which may influence compass calibrations.



### WARNING Verify ALTA 8 is disarmed prior to performing a compass calibration. To ensure ALTA 8 does not arm, remove the Configuration Jumper, set the mode switch to Height or Position, or set the home switch to Set New Home Position.



### NOTE It is recommended to use two people to perform the compass calibration as it requires handling and rotating ALTA 8. Perform calibration without a payload attached.



### NOTE Ensure a microSD card is installed in the GPS/compass module prior to performing compass calibration.52 TO PERFORM A COMPASS CALIBRATION: 1. Secur e a battery onto ALTA 8 2. Plug in the batt ery 3. Open the AL TA App 4. Sel ect Configurations > More > Compass 5. Under Calibr ation, select Start Manual 6. P erform the following steps:

1. F ace North, Pitch +180o

2. Pit ch -360o

3. Pit ch +180o 4. F ace East (Yaw 90o)

5. Roll +180o

6. Roll -360o PITCH -180o FACE EAST (YAW +90o) ROLL+180o ROLL+360o
PITCH +360o PITCH +180o

PITCH -180o FACE EAST (YAW +90o) ROLL+180o ROLL+360o
PITCH +360o PITCH +180o

PITCH -180o FACE EAST (YAW +90o) ROLL+180o ROLL+360o
PITCH +360o PITCH +180o PITCH -180o FACE EAST (YAW +90o) ROLL+180o ROLL+360o
PITCH +360o PITCH +180o

PITCH -180o FACE EAST (YAW +90o) ROLL+180o ROLL+360o
PITCH +360o PITCH +180o

PITCH -180o FACE EAST (YAW +90o) ROLL+180o ROLL+360o
PITCH +360o PITCH +180o53 

# AUTOMATIC COMPASS CALIBRATION Automatic Compass Calibration will use compass readings over time to resolve an accurate compass calibration. Manual calibration is recommended when moving to a new location and an accurate compass calibration is needed immediately for using Position Mode. In the ALTA App, select Configurations > More > Compass. Change the Auto Calibration setting to On.54 

# PROPELLERS

The folding propellers include two carbon fiber propeller blades attached to prop hubs, which are themselves secured to the motors. The propellers installed on booms 1, 3, 5, and 7 spin clockwise when viewed from above ALTA 8, and the propellers installed on booms 2, 4, 6, and 8 spin counterclockwise when viewed from above. For information on propeller installation and maintenance, refer to the Maintenance section of this manual.


### CAUTION Only use propellers supplied by Freefly on ALTA 8. Use of third-party propellers can cause motor instability, overheating and failure.55 

# CHECKING PROP BOLT TIGHTNESS

Over time, the bolts that hold the propeller blades to the prop hub can loosen due to vibration. To check prop bolt tightness, twist the prop about its length. If there is free play, the prop bolt is too loose. Use the provided 2.5mm hex driver and wrench to tighten the bolt and nut that secure the prop blade just enough to remove the play.


### CAUTION Do not overtighten, or the prop may fail to unfold completely during motor start up, leading to excessive vibration.56 

# FIRST PERSON VIEW (FPV)

ALTA 8 and SYNAPSE can power a variety of first person view (FPV) cameras and transmitters, as well as add informational on-screen display (OSD) elements to aid in FPV flying. Each supplied cable has the one side with a connector that mates with a cable located in the closeout panel between booms 1 & 2. Three FPV transmitter cables are included. The cable with two connectors on one of the ends will run ImmersionRC and Fat Shark transmitters, the cable with a single large connector on the end will run Boscam and transmitters, and the cable with a single small connector will run compact Boscam transmitters. A single camera cable is provided, and is configured to run a Ready Made RC camera. Camera and transmitter cables follow this wiring scheme:

CABLE COLOR FUNCTION Red +12 VDC Black Ground Yellow Video signal



### WARNING It is the responsibility of the pilot to see and avoid other aircraft, people or obstacles. Always maintain direct line of sight with ALTA 8 during flight, use visual observers as operations require, and follow local regulations regarding see-and-avoid requirements.



### CAUTION Do not short the pins of the FPV transmitter connector located on the FPV transmitter lead in the ALTA 8. Doing so could damage the on-screen display circuit. If using a multimeter to check the pins, first connect one of the provided transmitter cables, then take voltage readings from the transmitter cable.57 

# FPV SYSTEM INSTALLATION

CAMERA 1. Remo ve the front closeout panel with a 2.0mm hex driver

2. Loc ate the FPV camera cable included in the ALTA 8 package 3. P ass the FPV cable through the closeout panel grommet and connect to the mating FPV camera lead inside ALTA 8. Connect the other end directly to the camera

4. Replac e front closeout panel.58 5. Mount FPV c amera on the FPV mount on the front ALTA 8 using the provided hardware

TRANSMITTER 1. Mount FPV tr ansmitter on the provided carbon fiber accessory mount plate

2. Att ach accessory mount to boom 2 with M3x6 flathead bolts

3. Loc ate the appropriate FPV transmitter cable. The following cables are included:
a. Immer sionRC/Fat Shark (cable with two connectors) b. Bosc am/SkyZone (cable with one large connector)

c. Compact Bosc am (cable with one small connector) a. b.

c.59 4. Remo ve the side closeout panel with the FPV transmitter lead using the 2.0mm hex driver

5. P ass transmitter cable through the underside of the hinge, and connect to the FPV transmitter lead

6. Replac e side closeout panel

7. Zip tie the FPV tr ansmitter lead to the boom cable bundle for strain relief60 

# FPV ON SCREEN DISPLAY SETUP A number of properties and components can be adjusted or added to the FPV On Screen Display (OSD) using the ALTA App.
PROPERTIES
NAME OPTIONS DESCRIPTION Video Mode PAL / NTSC Indicates to the SYNAPSE the FPV video camera format Units Metric / Imperial Changes the displayed units Horizontal Offset 0, 15, 30, 45, 60 Centers the OSD components horizontally Vertical Offset 0, 8, 16, 24, 30 Centers the OSD components vertically
Borders 0, 1, 2, 3 Adds gaps between OSD components and the edges of the display, measured in character widths and heights

TEXT COMPONENTS The following components are displayed as text items, and can be configured to display as big or small letters, or no letters effectively turning off the display.

NAME DESCRIPTION Height Displays the height of ALTA 8 from its starting point in meters or feet Vario Displays the vertical speed of ALTA 8 in meters per second or feet per minute Heading Displays the magnetic heading of ALTA 8 and is measured in degrees Distance Displays the distance ALTA 8 is from the home position in meters or feet Ground Speed Displays the ground speed of ALTA 8 in meters per second or knots Battery Displays the voltage of the flight battery pack Time Displays the time of the flight in minutes and seconds GPS Displays the number of GPS satellites in view GPS Accuracy Displays the horizontal accuracy of the GPS signal in meters or feet Lat/Long Displays the GPS derived latitude and longitude coordinates of ALTA 861 ARTIFICIAL HORIZON COMPONENTS The artificial horizon displays pitch and roll information in the center of the FPV display in the form of a horizon line and accompanying elements.

NAME OPTIONS DESCRIPTION

Artificial Horizon No Turns off all artificial horizon components Basic Adds a horizon line that moves up and down as ALTA 8 changes pitch, and rolls as ALTA 8 rolls Ladder Adds pitch marks at intervals defined by the Pitch Interval setting

Roll Marker Basic Adds small dash marks on the left and right side of the artificial horizon that indicate changes in roll Horizon Adds marks to include a full horizon line
Ladder Adds small marks on either side of the artificial horizon ladder that roll with ALTA 8 roll movements Pitch and Roll Scaling 10, 20, 30, 40 Allows for scaling of the artificial horizon markings to compensate for FPV cameras of different field views Pitch and Intervals 10, 20, 30, 40 Sets the number of degrees between pitch markings when the artificial horizon ladder is used
OTHER COMPONENTS The following components can be turned on or off. There are no other options associated with these components.

NAME DESCRIPTION Compass Arrow Displays an arrow that points in the direction of north Home Arrow Displays an arrow that points in the direction of the home point
Vario Bar Displays a bar on the right of the screen that scales with vertical speed. The bar will increase in length up to indicate a climb, or down to indicate a descent

Forward Velocity Displays a bar on the left of the screen that scales with the forward/rearward velocity component The bar will extend up to indicate forward velocity, or down to indicate a rearward velocity62 Sideslip Displays a bar on the bottom of the screen that scales with the side-to-side velocity component The bar will extend left to indicate leftward velocity, or right to indicate rightward velocity63 

# TUNING ALTA 8

ALTA 8 comes pre-tuned for a wide variety of payloads and flying conditions. Generally, additional tuning is not required to fly ALTA 8, and additional tuning will only need to take place if more customization of control feel is desired. Default tuning values are included in Appendix A, Default Tuning Values. Parameters fall into three categories - Attitude, Height and Position. Typically, tuning should take place in that order, ensuring Attitude parameters are set first, then moving to Height parameters, and finally Position parameters. Tuning should take place as an iterative process by making only small changes, test flying the changes, observing the new flight behaviors, and repeating. Only tune a single parameter at a time during this process for best results. To tune ALTA 8, open the ALTA App and select Configurations > Aircraft Dynamics.



### WARNING Tuning can change the fundamental flying characteristics of ALTA 8. It is possible for ALTA 8 to become unstable or even uncontrollable if values are set too high or too low. Only change tuning parameters in small increments and with caution. Always test new tuning configurations in open areas away from people or obstacles.



### NOTE The ALTA App only allows tuning while ALTA 8 is on the ground.



### NOTE When making configuration changes with the ALTA App, wait three seconds before closing the app for changes to be saved automatically.


# ATTITUDE TUNING Attitude tuning adjusts how ALTA 8 responds to control inputs and disturbances. Attitude directly controls responsiveness and changes ALTA 8’s fundamental flying behaviors. Attitude must be tuned acceptably before tuning height or position parameters. When tuning attitude, the primary parameter to change is Stiffness followed by Strength.64 STIFFNESS Stiffness is adjusted for pitch and roll simultaneously, and yaw independently. It changes how stable ALTA 8 is in these axes and is the primary variable to adjust when tuning. When tuning Stiffness first, or making large stiffness changes, Hold Strength should be set to a low, non-zero value. Higher Stiffness values give more responsive control. Values that are too high can cause instability or oscillation.


### WARNING Excessively high stiffness values can cause ALTA 8 to become unstable and difficult or even impossible to control. Lower Stiffness values give less responsive control. Values that are too low can cause a vague or disconnected control response.

HOLD STRENGTH Hold Strength controls how much ALTA 8 will try to maintain a pitch/roll angle command, or a yaw heading command. It is adjusted for pitch and roll simultaneously, and yaw independently. A higher Hold Strength setting will give a faster control response and a more responsive feel. However, values that are too high can cause ALTA 8 to overshoot pitch or roll commands, or even cause instability.


### WARNING Excessively high strength values case cause ALTA 8 to become unstable and difficult or even impossible to control. Typically, this setting will not need to be changed from the default value, and only then in small increments.



# HEIGHT TUNING Tuning height parameters will adjust the control feel of ALTA 8’s height control while in Height and Position modes (for additional information on flight modes, see the Flight Controller Modes section of this manual). Tune height parameters only after satisfactorily tuning attitude parameters. Similar to attitude tuning, stiffness is the primary tuning parameter. If switching to Height Mode causes ALTA 8 to fly in an unstable manner, switch back to Manual Mode, land and try reducing the values of height tuning gains if they are very high, or increasing them if they are very low.65 VERTICAL STIFFNESS Vertical Stiffness Gain modifies the vertical stability of the ALTA 8 in Height mode. Decrease this value if ALTA 8 experiences vertical oscillation or vibration. Increase this value if ALTA 8 is sluggish while accelerating to a desired climb or descent rate in Height mode.
HOLD STRENGTH Hold Strength Gain tunes how much ALTA 8 will attempt to stay on a desired altitude in Height Hold mode only. A higher value will result in height being held more precisely. Too high of a value can cause ALTA 8 to overreact to winds, gusts or turbulent air.
CLIMB RATE STRENGTH Climb Rate Strength adjusts how much ALTA 8 will attempt to maintain a desired climb rate. Higher values will result in a more direct feel between pilot climb or descent commands and ALTA 8 flying behavior. However, values that are too high may cause instability. 

# POSITION TUNING Tuning position parameters will adjust how well ALTA 8 maintains a desired ground speed or a position over the ground. Similar to attitude and height tuning, the primary value to adjust is stiffness.
HORIZONTAL STIFFNESS This changes the horizontal stability of ALTA 8. Higher values increase ALTA 8’s resistance to wind gusts or turbulence from moving ALTA 8 off its target position. Values that are too high can cause instability of ALTA 8.
HOLD STRENGTH This adjusts how much ALTA 8 will attempt to maintain its place over a target position. A higher value will result in position being held more precisely. If too high, positional instability can result, causing ALTA 8 to fly past a target position.66 

# ALTA 8 FLIGHT PARAMETERS

Flight Parameters are different from tuning parameters in that the flight characteristics of ALTA 8 will not change with their modification. However, they can be used to select neutral points using trim, or to set maximum or minimum values. 

# ATTITUDE

PITCH AND ROLL TRIM Use Pitch and Roll trim settings to correct for tendencies of the ALTA 8 to pitch or roll with a neutral control input. Use the in-app pitch and roll trim settings instead of radio controller trim features as large radio controller trims could prevent position hold from engaging at neutral stick positions. MAXIMUM PITCH/ROLL ANGLE This sets the maximum angle ALTA 8 will be allowed to fly in all modes and in all flight conditions.
MAXIMUM YAW RATE This is the maximum rate ALTA 8 will yaw (pan) when at full stick deflection. 

# HEIGHT

HOVER THROTTLE Hover Throttle is a parameter that adjusts ALTA 8’s thrust at center throttle stick, and ensures ALTA 8 does not climb or descend at the center stick position while flying in Manual Mode. A Hover Throttle setting that is too high or too low can cause ALTA 8 to climb or descend when switching between Manual and Height Modes.


### NOTE Hover Throttle will need to be adjusted when changing the overall weight of the system, or when moving between very different elevations.

Adjust the Hover Throttle setting such that during a stable hover the required throttle position is at middle stick, or about 1500 μs in the App radio chart. Increase Hover Throttle if hover occurs above center stick, and decrease if hover occurs67 below center stick. Alternatively, if ALTA 8 climbs when switching from Manual to Height mode, increase hover throttle, since a climb indicates a stick position that is higher than neutral in Manual mode. If ALTA 8 descends, decrease hover throttle, since a descent indicates a stick position that is lower than neutral in Manual mode.


### NOTE The ALTA App does not allow hover throttle adjustments while ALTA 8 is flying.

MAXIMUM CEILING This adjusts the highest altitude the ALTA 8 is allowed to climb from its starting point while in Height or Position modes. If the maximum ceiling is exceeded in Manual mode, the Status Light will illuminate white.
MAXIMUM CLIMB RATE This sets the maximum speed ALTA 8 will climb at full throttle stick deflection in Height Mode or Position Mode If Climb Rate Clamp is mapped to a radio controller channel, the parameter will adjust the fastest climb speed available to the Climb Rate Clamp feature.



# POSITION
MAXIMUM G This sets the total maximum acceleration, in G’s, that the controller will place on the airframe. It is recommended to use lower G settings with heavier payloads. This setting has no effect in Manual Mode.
MAXIMUM GPS ANGLE This sets the maximum pitch and roll angle the ALTA 8 may fly under Position mode. This will not override the Attitude Maximum Pitch/Roll Angle. Instead, ALTA 8 will follow the lower of these two limits.
MAXIMUM GPS SPEED Max GPS Speed sets the maximum speed ALTA 8 will fly across the ground at full stick deflection in Position Mode. If Velocity Clamp is mapped to an RC transmitter channel, the parameter will adjust the fastest ground speed available to the Velocity Clamp feature.68 RANGE Range sets the maximum distance ALTA 8 may fly away from the home point while in Position mode. If the range is exceeded in Manual mode, the status light will illuminate white.69 

# RESETTING ALTA 8 WIFI PASSWORD
TO RESET THE WIFI PASSWORD:
1. Simultaneously:
a. Pr ess and hold the square reset button on the GPS unit b. P ower on ALTA 8 2. Hold the r eset button for 10 seconds 3. P ower cycle ALTA 8 Once complete, the WiFi password will be removed. A new one can then be set in the ALTA App.70 

# OPERATING ALTA 871 

# FLIGHT CONTROLLER MODES

ALTA 8 has three primary flight control modes: Manual Mode, Height Mode, and Position Mode. They are selected with the Mode Switch. ALTA 8 also has two emergency control modes, Return-To-Home and Autoland, which are available only during certain situations. For additional information, refer to the sub-section associated with each emergency control mode.


### CAUTION Always neutralize control inputs when switching between control modes.



# MANUAL MODE In Manual Mode, ALTA 8 will only stabilize its attitude. At neutral control input (middle pitch and roll stick position), ALTA 8 will attempt to remain level. Throttle control is direct. 

# HEIGHT MODE Height Mode changes the throttle stick behavior to command climb and descent rates. The higher the throttle stick position, the faster ALTA 8 will climb. Conversely, the lower the throttle stick position, the faster ALTA 8 will descend. When the throttle stick is centered, ALTA 8 will enter Height Hold. In Height Hold, ALTA 8 will maintain a target altitude and try to correct for drift. If a disturbance moves ALTA 8 away from this target altitude, ALTA 8 will climb or descend to return to the target altitude. 

# POSITION MODE Position Mode changes the pitch/roll stick behavior to command ground speeds. Pitch and roll stick deflection will command fore/ aft and left/right ground speeds respectively. Controlling altitude in Position Mode is the same as in Height Mode. With pitch and roll controls centered, ALTA 8 will enter Position Hold. In Position Hold, ALTA 8 will maintain its position over a given point on the ground and correct for disturbances. Position Mode requires a strong GPS signal. If a weak signal is present, ALTA 8 will72 not enter Position Mode, and if the GPS signal degrades while in Position Mode, ALTA 8 will automatically revert to Manual Mode.



### CAUTION Flight using Position Mode in areas of degraded GPS signal, such as near buildings or under dense tree cover, is not recommended. The automatic reversion to Manual Mode can cause unexpected, abrupt changes in flight behavior.



# RETURN-TO-HOME Return-To-Home Mode will command ALTA 8 to fly back to the starting point of the flight or the last defined Home Point. When ALTA 8 first acquires a GPS position, it sets this as the Home Point of the flight. The Home Switch on your radio controller can also be used to set a new Home Point. See the Radio Mapping section in this manual for more information on setting up the Home Switch. RTH can be initiated manually by the Home Switch or be initiated with an LOS event.


### NOTE LOS features are only available on an S.Bus/S.Bus2 or DSM2/DSMX receiver.

When initiated with the Home Switch, ALTA 8 will fly back to the Home Point, and the pilot will maintain control of ALTA 8’s altitude the entire time. ALTA 8 will not Autoland if an adequate signal is detected. The pilot can cancel the RTH procedure by commanding a pitch or roll command or by retuning the Home Switch to the middle position. The Mode Switch must be in Position Mode to activate RTH manually. During an LOS event, ALTA 8 will first check its current altitude against Safe Height. If it is lower, it will climb to Safe Height, and if ALTA 8 is above Safe Height, it will remain at its current altitude. Next, ALTA 8 will fly back to the home position at the RTH Speed set in the ALTA 8 App. Finally, upon reaching the home position, ALTA 8 will begin Autoland.73 

# Return To Home

SAFE HEIGHT IS USER DEFINED

ALTA APP > CONFIGURATIONS > SAFETY > SAFE HEIGHT



# AUTOLAND
The Autoland function will command ALTA 8 to hover for 10 seconds and will then land in place. If ALTA 8 is above the app-configurable Safe Height setting, ALTA 8 will first descend to it at the Maximum Descent Rate. After reaching this height, ALTA 8’s descent will slow to the Autoland Descent Rate. Autoland will only initiate if one of the following conditions is met:

» During Los s of Signal (LOS) if Autoland is selected as the LOS event in the ALTA app

» At the end of a L OS Return-to-Home event

» Batt ery exhaustion while flying in Height or Position modes only74 

# HOME SWITCH

The home switch has three settings, Set Home, RTH Off and RTH On.
SET HOME Set Home sets a new home point at ALTA 8’s current position. This could be useful for setting a point away from the initialization point, such as if the ALTA 8 was started underneath an overhang or a tree. A new home point can only be set within 20 meters of ALTA 8’s starting point. Momentarily moving the Home Switch to the Set Home position sets a new home point. When a new home point is set, the Status Light will turn white to indicate the new home point was successfully set.
RTH OFF This is the normal switch position and does not initiate an RTH command.
RTH ON This manually initiates the RTH function. In a manual RTH, the pilot maintains control of height while the SYNAPSE will command ALTA 8’s position over the ground to the home point.75 

# DISARM SAFETY SWITCH

The Disarm Safety Switch aids in preventing accidental motor disarming while the ALTA 8 is in flight and in manual mode. It may be mapped to a two or three-position switch. To set up the Disarm Safety Switch, refer to the Radio Mapping section of this manual.

3 POSITION SWITCH FUNCTION 1 On - Disarming is not possible. 2 Off - Disarming is possible. 3 Off - Disarming is possible.

2 POSITION SWITCH FUNCTION 1 On - Disarming is not possible. 2 Off - Disarming is possible.76 

# STATUS LIGHT

The rear-facing Status Light shows the status of ALTA 8 as it boots, arms and flies. The following table shows the different meanings of the light in the various flight phases.

FLIGHT PHASE LIGHT COLOR MEANING Booting Flashing Red + White Flight controller is booting

Standby Flashing White Flight controller is running and dis-armed Flashing Red Flight controller is running and not ready to arm Solid Red Flight controller boot unsuccessful Armed Off Ready for Flight Flight - all modes Solid Red Flight critical alarm - Land immediately! Flight - Manual Mode Off Nominal flight status No errors Solid White Outside user-defined range, height or speed limits77 Flight - Height Hold Off Nominal flight status Height hold inactive Slow Flashing White Height hold active Solid or Flashing Red Flight critical alarm - Land immediately!

Flight - Position Hold Off Nominal flight status Height hold inactive Position hold inactive Slow Flashing White Height Hold or Position Hold Active Fast Flashing White Height Hold and Position Hold Active Solid or Flashing Red Flight critical alarm - Land immediately!78 

# ALARMS

ALTA 8 will notify the pilot of critical alarms using the Status Light. These alarms indicate a serious issue has been observed in the behavior of the ALTA 8 that, if not acted upon immediately, can cause loss of control. Never continue a flight when ALTA 8 indicates an alarm.
During an alarm, the Status Light will turn red.



### WARNING If ALTA 8 displays an alarm, land immediately.79 

# ORIENTATION LIGHTS

BOTTOM VIEW
The boom-end mounted Orientation Lights indicate both the orientation of ALTA 8 in flight and the status of the individual motor Electronic Speed Controllers (ESCs) during other operational phases. The following table shows the different meanings of the light colors in the various operational phases.

FLIGHT PHASE LIGHT COLOR MEANING Booting Blue ESC booting Standby Flashing Green ESC booted normally Armed User-defined Nominal Status Flight User-defined Nominal Status Firmware Update Blue then Yellow ESC firmware is updating80 

# ALTA APP MONITOR

The ALTA App includes a flight status monitor that displays information about the health of the ALTA 8 and the various controls that can be selected. Boot indicates if the SYNAPSE booting process has completed successfully. Any issues that prevented a normal boot are indicated here. Battery displays the voltage of the battery pack. Status displays the state of the SYNAPSE flight controller. Radio displays if the SYNAPSE detects a radio controller signal. A LOS (Loss Of Signal) warning is displayed if no signal is present. GPS displays if SYNAPSE has resolved a GPS fix or not. Sats displays the number of GPS satellites in view and being received. Lock displays whether a position lock is ready, indicating a valid GPS fix and good heading. This is required before the SYNAPSE will allow switching into Position Mode. Height displays the current height control mode: Manual, Vario if in Height or Position mode and climbing or descending, and Hold. Attitude displays the current attitude control mode. Position displays the current position control mode: Manual, Velocity if in Position mode and moving across the ground, and Hold Compass displays the status of the compass and if the SYNAPSE believes the compass readings are good or bad. If Bad, the compass may require recalibration (see the Compass Calibration section in this manual). Station displays if ALTA 8 is currently over its commanded position over the ground, or if it attempting to fly to it. Temp displays the temperature of the SYNAPSE flight controller board.81 

# DATA LOGGING

ALTA 8 automatically logs flight and control data when ALTA 8 is armed for flight. Data is recorded as a .csv file at a rate of 25 Hz on a microSD card installed on the top of the GPS/Compass module. A table of recorded data is included in Appendix B.

# NORMAL PROCEDURES83 

# UNPACKING AND SETUP

1. Air craft REMO VE from case 2. Pr op protectors REMO VE 3. Boom r etention clips ST OW 4. Booms UNF OLD 5. Boom lat ches L OCK 6. Rec eivers and wiring CHECK 7. Isolat or cartridges SELEC T and INSTALL as necessary 8. P ayload mounting location CONFIGURE as nec essary 

# AMPLIFICATION To set up ALTA 8 for flight, remove it from the case and remove the prop protectors. Stow the six boom retention clips by folding them down. The clips only fold in one direction and are spring-loaded to stay in open and closed detented positions. Unfolding the booms is most easily accomplished by unfolding opposite pairs partially. Then unfold the opposite boom pairs completely. ALTA 8 can become unbalanced while unfolding booms individually, so unfolding opposite pairs reduces this possibility. Once unfolded, push on the boom latches until they audibly click, indicating the booms are secure. There should be little to no slop in the hinge. Check that the receivers and the electrical connectors that attach to the receivers are secure. For information on installing isolator cartridges and setting up payload mounting locations, refer to the Isolator Cartridges and Configuring Top or Bottom Mount sections of this manual.84 

# BEFORE STARTING

1. Payload SECURED 2. Isolat or Cartridges VERIFY SECURE 3. micr oSD Card INST ALLED 4. Pr ops CHECK CONDITION, VERIFY TIGHT 5. Pr op Hubs VERIFY SECURE 6. Mot ors CHECK CONDITION 7. Radio Contr oller ON, VERIFY TX BA TT 8. Radio Contr oller Model SELEC T 9. Air craft Placement A WAY from people and obstacles 10. Batt ery Pack Voltage VERIFY ABO VE 24V 11. Batt ery Packs SECURE 12. Batt ery Leads CHECK CONDITION and CONNEC T 13. Air craft KEEP ST ATIONARY 14. Flight Contr oller INITIALIZED 15. St atus Light VERIFY SL OW FLASHING WHITE 16. Orient ation Lights VERIFY FLASHING GREEN 17. Rec eivers VERIFY BOUND 18. AL TA App CONNEC T 19. AL TA App Monitor VERIFY NO W ARNINGS 20. Compas s Calibration AS REQUIRED 21. Radio Contr ol Range Check AS REQUIRED 

# AMPLIFICATION Check that the payload is secure by checking that the Toad In The Hole quick release lever is pushed in, and that the payload does not slip. Check that all isolator cartridges are locked in place, especially if they have been recently replaced. A microSD card is required to be installed in the GPS/Compass module for reliable compass sensing and data logging. The blades should be checked for damage, including nicks and scrapes. If a prop has been nicked enough such that it catches a fingernail, it should be replaced. Bolt tightness should be checked by rotating the blade about its length (blade pitch up and down). There should be no slop, and if there is, the bolt and nut should be tightened until the slop is removed. There should be no slop between the prop hub and the motor.85 Motors should spin freely, and there should be no grinding or scraping sound from the motor. The inside of the motor should be free of debris. Always turn on the radio controller before plugging in ALTA 8. Follow the battery installation guidance in the Battery Installation section of this manual for battery installation instructions. While the SYNAPSE flight controller initializes, keep the ALTA 8 as stable as possible. Wedging a foam prop protector between the stationary gimbal or landing gear and the ALTA 8 frame can be used to stabilize ALTA 8 from spinning during this process. 

### NOTE If ALTA 8 moves during initialization, it may not boot properly and will fail to start or not maintain heading.
When it is impossible to initialize ALTA 8 without movement (such as booting on a boat), Motion Booting can be used. It is not recommended to use Motion Booting regularly since it bypasses error checking processes. During initialization, the Status Light will quickly flash a sequence of red and white lights. At the end of this process, it will begin slow flashing white, indicating SYNAPSE is ready for arming. The Orientation Lights will also begin flashing green. Verify that all six motors are flashing green, indicating all ESCs initialized successfully. Verify that there are no flight warnings by connecting to ALTA 8 via the ALTA App and checking on its status from the App. For more information, see the ALTA App section of this manual.86 

# BEFORE TAKEOFF

1. Pr op Area CLEAR 2. Mode Swit ch MANUAL 3. Home Swit ch CENTER POSITION 4. Radio Contr oller VERIFY CORREC T MODEL 5. T elemetry (if equipped) CHECK OPERA TION 6. AL TA 8 ARM 7. St atus Light VERIFY OFF 8. Orient ation Lights VERIFY USER-DEFINED COL OR 9. Mot ors ST ART and VERIFY OPERATION 10. Flight Contr ols VERIFY CORREC T 11. Throttle AD VANCE 12. Disarm Saf ety ON 

# AMPLIFICATION Prior to start, check the surrounding area to ensure people and objects are clear of ALTA 8 and its props. Also ensure that there are no people or objects between the ALTA 8’s takeoff location and its intended flight path.


### WARNING ALTA 8’s props spin at a high RPM, and the ends of the blades move at high speeds. ALTA 8’s props can cause severe injury or death or cause damage to objects while they are rotating. Always ensure the area surrounding the props and ALTA 8 is clear of people or objects prior to starting the ALTA 8’s motors.

ALTA 8 can only be armed for flight when it is in the Manual Mode, and the Home Switch is in the middle position. To arm, hold full low throttle and full left yaw.


### WARNING Do not approach ALTA 8 while it is armed.

To start the motors, hold full low throttle and full right yaw. Ensure that all the motors are spinning. Keep the throttle in the lowest position and move the pitch, roll87 and yaw controls slightly. ALTA 8 should pitch, roll and yaw slightly due to isolator cartridge flex. Ensure that the ALTA 8 behaves as expected. If it does not, shutdown ALTA 8 and ensure the props are installed in the correct orientation.


### CAUTION Do not make large yaw commands while on the ground with the inverted landing gear installed. Large yaw commands can cause instability.

After checking flight control directions, advance the throttle to enter a hover. Turn on the Disarm Safety to prevent accidental motor stops while flying.


### CAUTION Only take off in Manual Mode. Attempting to take off in Height or Position Modes may cause ALTA 8 to tip over.88 

# AFTER EVERY FLIGHT

1. Mode Swit ch MANUAL 2. Home Swit ch CENTER POSITION 3. Disarm Saf ety Switch OFF 4. ESCs and Mot ors DISARM and ST OP 5. Orient ation Lights VERIFY FLASHING GREEN 6. St atus LED VERIFY SL OW FLASHING WHITE 7. AL TA App CHECK f or warnings 8. Batt eries DISCONNEC T and REMOVE 9. Radio Contr oller Power AS REQUIRED 10. Air craft Condition INSPEC T 11. Mot or and Prop Condition INSPEC T 12. Batt ery Condition INSPEC T 

# AMPLIFICATION Prior to landing, switch to Manual Mode.



### CAUTION Only land in Manual Mode. Attempting to land in Height or Position Modes may cause ALTA 8 to tip over.

Upon landing, disarm the motors by holding full low throttle and full left yaw. This is typically done on the left radio control stick by moving it to the bottom left corner with mode 2 controllers. Disarming can only be done while in Manual Mode. Switch the Disarm Safety to off to allow the motors to stop. Once the motors are stopped and disarmed, the Orientations Lights will flash green and the Status Light will slowly flash white, indicating it is safe to approach ALTA 8.


### WARNING Only approach ALTA 8 after confirming that it is disarmed by verifying the Status Light and Orientation Light colors.

The downwash from the props can disturb debris. This debris can be ingested by89 the props or motors and cause damage. After the flight, ensure there is no damage to the props and that the motors still spin freely and quietly. Take extra care when operating in areas with large amounts of debris, such as in sand, dirt, or gravel. After flight is also a good time to check a battery pack’s condition. Always refer to the battery manufacturer’s recommendations for inspection and replacement intervals or requirements.90 

# AFTER LAST FLIGHT

1. Pr ops F OLD and PLACE inline with booms 2. Pr op Protectors INST ALL 3. Boom Lat ches UNL OCK 4. Booms F OLD 5. Boom Ret ention Clips EXTEND 6. Payload REMO VE 7. AL TA 8 INSERT int o case 

# AMPLIFICATION Packing ALTA 8 is similar to the unpacking process. Keeping ALTA 8 on the payload or landing gear facilitates the process as ALTA 8 may be turned on the Toad In The Hole adapter while folding the props and booms. Make sure that the handle is aligned front-to-back when putting ALTA 8 in the included case, and that the battery leads are facing to the right.

# EMERGENC Y PROCEDURES92 

# EMERGENCY GUIDANCE

The emergency procedures listed in this section are the recommended practices for handling the aircraft in the event of an aircraft emergency. This guidance should be considered and applied as necessary. The risk of an emergency occurring can be reduced substantially through proper aircraft maintenance, by performing thorough inspections before and after all flights, and with careful pre-flight planning. Emergency situations are dynamic events, and not all conditions or procedures can be anticipated or applied during the event. These procedures are not a substitute for a thorough understanding of aircraft systems and sound pilot judgment. In general, if an emergency occurs, three basic actions can be applied to most situations: Maintain aircraft control - Small emergencies can quickly escalate if the pilot is distracted attempting to determine or troubleshoot the problem. Always maintain visual contact with the aircraft during an emergency to reduce the likelihood of disorientation. Analyze the situation - Once the aircraft is stabilized, begin to assess the cause of the emergency if practical. Take appropriate action - In many cases, the appropriate action will be to land the aircraft as soon as possible. Always consider the safety of yourself and others before attempting to save the aircraft in an emergency.93 

# STATUS LIGHT WARNING INDICATOR ILLUMINATES

1. Mode Swit ch MANUAL 2. AL TA 8 LAND as soon as pos sible 3. AL TA App OPEN MONIT OR 

# AMPLIFICATION Warnings are displayed if the flight controller determines there is a condition present that can adversely affect the safety of the flight. They are indicated by the Status Light turning red. It is always recommended to land as soon as possible when the Status Light indicates a warning and investigate the problem while ALTA 8 is on the ground.94 

# PILOT DISORIENTATION

1. Contr ol Inputs NEUTRALIZE 2. Mode Swit ch POSITION 3. Y aw NOSE A WAY 4. Roll VERIFY DIREC TION 

# AMPLIFICATION Regaining spatial orientation as quickly as possible is most important. In disorientation situations, control inputs will not give the expected result, so neutralize them. If a good GPS signal is available, enable Position Mode so ALTA 8 will stay in one place. Use yaw only to reorient ALTA 8 so the nose is pointed away, then use the roll control to verify the orientation of ALTA 8.95 

# UNEXPECTED FLIGHT CONTROLLER BEHAVIOR

1. Contr ol Inputs NEUTRALIZE 2. Mode Swit ch MANUAL If the pr oblem persists 3. AL TA 8 LAND as soon as pos sible 

# AMPLIFICATION If the ALTA 8 behaves unexpectedly, neutralize control inputs and observe ALTA 8. If it is still flying in an uncommanded manner, switch to Manual mode if it is in Height or Position modes. In most cases, unexpected behavior is due to erroneous sensor readings, or degraded GPS signal reception. If the behavior occurred while in Manual mode, land as soon as possible and check the ALTA App for any warnings.96 

# BATTERY EXHAUSTION

If battery cell voltage is below Land Voltage, and in Height or Position Mode.

1. St atus Light Illuminat es red (solid or blinking) 2. AL TA 8 LAND as soon as pos sible

If battery cell voltage is below Land Voltage and in Height or Position Mode

1. AL TA 8 Begins Aut oland 2. Pit ch and Roll MANEUVER away fr om people or objects 

# AMPLIFICATION If the battery cell voltage drops below the Alarm Voltage, the Status Light will turn solid red in Manual Mode, or turn blinking red if holding position or altitude. Terminate the flight and land as soon as possible. In the event the cell voltage drops below the Land Voltage, and is in Height or Position Mode, ALTA 8 will begin to auto land. However, pitch and roll commands are still active. During the time ALTA 8 is descending, use pitch and roll to avoid people or objects during the descent and landing. ALTA 8 will not Autoland if it is in Manual Mode. Full throttle authority is available to the pilot in a battery exhaustion event.97 

# LOSS OF RADIO CONTROL SIGNAL

1. Contr oller Battery CHECK 2. Contr oller Antenna REPOSITION 3. Mode Swit ch POSITION 4. Home Swit ch RETURN-T O-HOME 

# AMPLIFICATION Loss of Signal (LOS) can occur if the radio controller stops transmitting a signal, or if ALTA 8 is too far away to receive it. In the event ALTA 8 detects a LOS, it will automatically execute a Return-to-Home or Autoland as configured in the App. However, it is always recommended to attempt to regain signal link with ALTA 8 to keep the pilot in control of the aircraft. Move the antenna orientation for best signal strength. Ensure the transmitter antenna matches the direction of the receiver antennae. Move the transmitter away from objects to get a clear line-of-sight to ALTA 8. Setup the Mode and Home switches to enable Return-To-Home so ALTA 8 will continue to approach the starting point and have a higher likelihood of regaining signal reception.


### NOTE If efforts to regain control signal are unsuccessful, ALTA 8 will begin the Return-To-Home and Autoland sequence.98 

# LOSS OF FPV SIGNAL

1. Contr ol Inputs AS REQUIRED 2. Visual Cont act EST ABLISH 3. AL TA 8 POSITION f or optimal signal reception

If visual contact or FPV signal is not reestablished

1. Mode Swit ch POSITION 2. Home Swit ch RETURN T O HOME 3. Thr ottle AS REQUIRED 

# AMPLIFICATION An FPV Loss of Signal (LOS) can occur if the aircraft flies out of range, or if it flies behind an object that interrupts the signal line of sight. Regaining visual contact is the preferred method to reestablish control of the aircraft, either with the pilot seeing the aircraft, or by the use of a second visual observer. Yawing the aircraft can help signal reception if the body of the aircraft is blocking the line of sight between the transmitter and receiver antennas. If FPV signal or visual contact cannot be reestablished, enabling Return To Home can be used to bring the aircraft back to signal reception range.



### WARNING It is the responsibility of the pilot to see and avoid other aircraft, people or obstacles. Always maintain direct line of sight with ALTA 8 during flight, use visual observers as operations require, and follow local regulations regarding see-and-avoid requirements.

# PERF ORMANCE100 

# PERFORMANCE

WEIGHT / ENDURANCE PERFORMANCE DATA
Conditions: Altitude Sea Le vel, ISA Winds Zero101 

# ALLOWABLE GROSS WEIGHTPress Alt FtMaximumGross Weight(lb)40.040.039.237.836.435.133.832.631.330.229.018.118.117.817.216.515.915.314.814.213.713.240.039.337.836.535.233.932.631.430.229.128.018.117.839.337.917.216.515.915.414.814.213.713.212.736.635.234.032.731.530.329.228.127.017.817.216.616.015.414.814.313.813.212.712.338.036.735.434.132.831.630.529.328.227.226.117.216.616.015.514.914.313.813.312.812.311.936.835.534.233.031.830.629.528.427.326.325.316.716.115.515.014.413.913.412.912.411.911.5MaximumGross Weight(kg)MaximumGross Weight(lb)MaximumGross Weight(kg)MaximumGross Weight(lb)MaximumGross Weight(kg)MaximumGross Weight(lb)MaximumGross Weight(kg)MaximumGross Weight(lb)MaximumGross Weight(kg)S.L.100020003000400050006000700080009000100000oC10oC20oC30oC40oCALTA 8 ALLOWABLE GROSS WEIGHTAs altitude and temperature increase, the density of the air decreases. Consequently, ALTA 8’s thrust will decrease. Thefollowing table describes maximum gross weight limits with respect to altitude and temperature.102 

# MAINTAINING ALTA 8103 

# GENERAL INFORMATION AND TECHNIQUES
CHASSIS ALTA 8 ships from the factory with motors precisely aligned to minimize the difference in motor speed between clockwise turning and counterclockwise turning motors while in flight. Opening the chassis by removing the screws that attach either the top or bottom chassis plates affects this alignment and may reduce ALTA 8 performance.


### NOTE Do not open the ALTA 8 chassis. Opening the chassis affects factory alignment.

All maintenance items are outside the chassis and do not require the removal of screws attaching the top or bottom chassis plates. 

# USE OF THREADLOCKER Bolts and screws that are called out in this manual to regularly remove or replace typically do not require use of a threadlock compound. This includes the screws holding on the handle, battery retention strap studs, battery stops, closeout panels, the top male Toad In The Hole adapter. In addition, fasteners that attach to nuts with a nylon locking feature (nylock nuts) do not require threadlocker. All structural fasteners require the use of threadlock. This includes chassis screws, lower male Toad In The Hole adapter and motor attachment fasteners. In addition, the four M3 x 8 socket head bolts that attach the folding propeller to the motor require threadlocker. Typically, a low strength threadlocker (such as Loctite Purple 222) is used on structural fasteners. 

# BOLT INSTALLATION The Freefly hex drivers included with ALTA 8 are designed to help limit the torque that can be applied to each bolt. Thread all fasteners into their respective holes until “snug”. This is when the fastener head bottoms out and lightly clamps the two mating parts together To prevent tightening the bolts excessively and damaging the bolts or parts, it is suggested to hold the wrench in your hand, and twist the wrench from the smaller diameter knurled section of the tool between your thumb and index finger for small fasteners (under size M3) or with your thumb and two forefingers for larger fasteners (size M3 and larger).104 

# MAINTENANCE ITEMS PROPELLERS

Propeller blades should be removed when making a change to the configuration of the ALTA 8 to prevent propeller strikes in the event of unintentional motor starts and should be replaced on an as needed basis if they become damaged. Generally, a nick on the leading edge that is large enough to catch a fingernail indicates that the prop should be replaced. If the blade composite structure becomes delaminated, the propeller blade should be replaced. Freefly makes folding propeller assemblies available that include the blades and prop hub fully assembled. They are available in clockwise and counterclockwise orientations.


### CAUTION Only use propellers supplied by Freefly on ALTA 8. Use of third-party propellers can cause motor instability, overheating and failure.105 The folding props are installed on the motors with four M3 × 8 socket head bolts.


### CAUTION Always use a threadlocking compound on the bolt threads that attach the propeller hub to the motor. Odd numbered booms (1, 3, 5 and 7) use clockwise rotating props when looking from the top down, and even numbered booms (2, 4, 6 and 8) use counterclockwise rotating props.



### WARNING Always check to ensure the correct prop rotation direction and correct propeller prior to flight. Props that spin in the incorrect direction will cause ALTA 8 to be uncontrollable.



# REPLACING PROPELLER BUMPERS Under normal use, propeller bumpers may split and fall out of the folding propeller assembly. Six spare bumpers are provided with the ALTA 8. To replace the bumper, disassembly of the folding propeller is required. Start by removing the M3 x 19 bolt and nylon nut. Pull off the upper prop adapter. The two bumpers are held in place by cylindrical features in the lower prop adapter. Replace the worn or split bumper with a new one.106 To reassemble, follow the part layout in the figure above. Note that there are two different types of washers, one made of nylon and the other made of PTFE. The nylon washer is smaller in width and thicker and is installed between the nut or bolt head and the two prop adapters. The PTFE washer is wider and thinner and is installed between the prop blades and prop adapters. 

# EVERY 15 FLIGHTS ALTA 8 is designed to be as maintenance-free as is possible. It is recommended to check ALTA 8’s fasteners regularly. This check should occur roughly after every 15 flights, dependent upon the level of vibration ALTA 8 experiences in flight or during handling. To check ALTA 8’s fasteners, apply a tightening torque to each fastener on the chassis using the supplied hex drivers. The fasteners should not slip. If a fastener does slip, tighten it using the methods described in the Bolt Installation section. Do not apply additional threadlocking compound unless the bolt has repeatedly come loose. 

# EVERY 15 FLIGHT HOURS The following should be checked after every 15 hours of flight.
BOLT TIGHTNESS Check the bolt tightness on the following fasteners:107 » Mot or mount bolts

» Pr op hub bolts

» Pr op bolts

» T op and bottom chassis bolts

» Cl oseout panel bolts

» FPV c amera mounting plate bolts

» Ac cessory mounting plate bolts

» GPS/Compas s mounting bolts
INSPECTION Inspect the following items. Replace if worn.

» Pr opeller blades

» Pr op bumpers
HINGE LATCH TIGHTNESS Check hinge latching tightness by closing the hinge. There should be a firm closing force and click. Adjust the tension by using a 1.5mm hex wrench on the set screw located under the hinge latch. 

# REPLACEMENT OF PARTS Spare or replacement parts are available for sale separately at www.freeflysystems.com . Please refer to the company store for a current listing of all available spare parts.108 

# FIRMWARE UPDATE PROCESS

NOTE Carefully follow in-app instructions for saving and restoring ALTA 8 configuration settings during the firmware update process.



### WARNING Test radio channels, arming and disarming behavior after firmware updates to ensure radio mapping has been preserved. Incorrect radio mapping can lead to loss of control.

SYNAPSE firmware is updated using the ALTA App. New app updates may include new firmware installations. To update firmware: 1. Pr ovide power to ALTA 8
a. Ins tall and plug in a fully charged flight pack or b. Plug in the USB-F utaba cable to an available receiver port (Futaba and PPM receivers only) 2. Open the AL TA App 3. Open Monit or > Updates 4. The lat est firmware included with the app release is compared with the ALTA 8 firmware. If a new release is available, the app will provide a notification 5. T ap the Install button in the App if an update is available 6. W ait until the firmware is loaded and ALTA 8 has booted— Do not power down ALTA 8 during this time 7. Rel oad saved configuration109 

# MOTOR ALIGNMENT

ALTA 8’s motors are aligned at the factory at an angle of ±2.5°. This slight angle improves aircraft yaw authority and allows clockwise and counterclockwise turning motors to spin at similar speeds. This alignment can be lost when opening the ALTA 8 chassis or if a boom needs to be replaced. If the motors need to be realigned, follow the realignment procedure, then verify realignment was successful using the ALTA Flight Data Viewer, available at freeflysystems.com. To perform a realignment, Freefly recommends using a small digital angle gauge with a flat surface so it can rest on the bottom of the motor mount (for example, the Wixey WR300 angle gauge).
MOTOR REALIGNMENT PROCEDURE 1. Plac e ALTA 8 on a level surface. 2. Plac e a digital angle gauge on the chassis next to the boom facing outwards.

3. Zer o the angle gauge. 4. St arting at motor 1, place the digital angle gauge on the flat surface of the motor mount with the gauge facing outwards.110 5. If the gauge r eads a value outside the range 2.5°±0.1°, loosen the motor mount clamping bolts. While placing slight inward pressure on the motor, rotate the motor until the angle gauge indicates 2.5°±0.1°. When viewed from the end of the boom:
a. Mot ors 1, 3, 5 and 7 should be rotated clockwise.

b. Mot ors 2, 4, 6 and 8 should be rotated counterclockwise.



### NOTE When rotating the motor, do not pull outwards on it.

6. Appl y threadlock as required (Loctite 222 recommended), and tighten the motor mount bolts to 0.8 N-m (7 in. lbs.). Do not overtorque the bolts. 7. Repeat s teps 2 through 6 for the additional motors. 8. Aft er aligning motors, recheck motor mount alignment and clamping bolt tightness.
MOTOR ALIGNMENT VERIFICATION FLIGHT TEST PROCEDURE 1. Compl ete the Unpacking and Setup, Before Starting and Before Takeoff checklists. 2. Ent er a hover for at least 10 seconds. Do not yaw during the hover. 3. P erform the After Every Flight checklist.111 4. Retrie ve the microSD card from the GPS module and open it with a computer. 5. Open the AL TA Flight Data Viewer. 6. Dr ag and drop the latest .csv data log file of the test flight from the microSD card on to the ALTA Flight Data Viewer window. 7. Under the Dat a Seeker section, select Hover from the Seek Event drop down box. 8. In the Flight St atistics section, look at the Yaw CW Bias value. It should be within +/- 5%. It Yaw CW Bias is outside +/- 5%, recheck motor alignment.


### NOTE If the ALTA Flight Data Viewer is unavailable or cannot be used on your operating system, yaw bias can be found at the bottom of the .csv data log for that flight.112 

# GUIDELINES FOLLOWING AN ACCIDENT

Extra precautions should be taken following an accident, including a tip over. The following inspections should be used as a guideline to determine if ALTA 8 is in a safe condition for flight. If any damage is discovered, or if there are any questions about the safety of continuing flight with your ALTA 8, contact Freefly customer support.



### CAUTION ALTA 8 is a precisely tuned flying machine with sensitive electronics and may become damaged or adversely affected by crashes, tip overs, propeller strikes with solid bodies, or other abnormally stressing events. Freefly recommends immediately contacting Customer Support for guidance in case of any of these events. Typical guidelines for inspection after a strenuous event may include, but not be limited to, the following outlined in this section to gauge the flightworthiness of the ALTA 8 prior to subsequent flights. Field inspections are no substitute for consultation and direct inspection and repair of damage by Freefly.

The following should be inspected following an accident:

» Pr opeller blade and hub damage

» Pr opeller tip spacing

» Mot or alignment

» Chas sis plate damage

» The T oad In The Hole spacer in the center of the ALTA 8

» Booms f or damage or cracking

» P osition light covers

» Landing gear

» Cl oseout panels

» Hinge fr ame alignment

» Hinge t ension-compression link and latch

# TROUBLESHOO TING114 

# GENERAL WARNINGS
SYMPTOM POTENTIAL CAUSE POTENTIAL SOLUTION

Compass Warning microSD card is missing Check the microSD card is installed Compass calibration is invalid Recalibrate the compass

GPS Warning GPS/Compass Unit has become disconnected Check the GPS/Compass unit wiring for damage


# FLIGHT CONTROLLER
SYMPTOM POTENTIAL CAUSE POTENTIAL SOLUTION

ALTA 8 will not arm Home Switch not in middle position Move Home Switch to middle position Mode Switch not in Manual Move Mode Switch to manual
Radio not bound Follow radio controller manufacturer’s binding procedure Radio not mapped properly Check ALTA App radio mapping charts for correct behavior Adjust mapping as necessary

SYNAPSE boot not successful Power cycle ALTA 8. Ensure it does not move during boot If ALTA 8 must move during boot (such as on a moving platform), use Motion Booting

Motors will not stop Mode Switch not in Manual Move Mode Switch to manual Disarm Safety On Move Arm Enable Switch to Allow Disarm115 

# FLIGHT BEHAVIOR
SYMPTOM POTENTIAL CAUSE POTENTIAL SOLUTION ALTA 8 does not maintain level pitch or roll Pitch or Roll Trim position not set Use the ALTA app to set the appropriate pitch and roll trim ALTA 8 does not maintain heading Yaw during boot Re-initialize SYNAPSE while keeping ALTA 8 stationary in all directions

ALTA 8 circles a point in Position Mode Compass calibration is invalid Recalibrate the compass
Position Hold tuning values too high Reduce Position Hold tuning values, starting with Position Hold Strength ALTA 8 does not track straight in Position Mode Compass calibration invalid Perform a manual compass calibration

Unexpected flight behavior Tuning too high or too low Revert tuning to the last known working configuration Set tuning back to default values 

# FIRMWARE UPDATE
SYMPTOM POTENTIAL CAUSE POTENTIAL SOLUTION Firmware update only completes halfway WiFi connection between ALTA 8 and mobile device lost during update Remove nearby known wireless networks from mobile device. Restart firmware update.116 

# APPENDIX117 

# APPENDIX A. DEFAULT TUNING VALUES
The following default tuning values only apply to ALTA 8. For ALTA 6 tuning values, refer to the ALTA 6 Aircraft Flight Manual.

PARAMETER GROUP PARAMETER DEFAULT VALUE

Attitude Pitch/Roll Stiffness 65 Pitch/Roll Hold Strength 50 Yaw Stiffness 140 Yaw Hold Strength 60 Roll Trim 0 Pitch Trim 0 Maximum Pitch/Roll Angle 40° Maximum Yaw Rate 100°/sec

Height Vertical Stiffness 9 Hold Strength 80 Hover Throttle 14.0V Ceiling 118 meters Climb Rate 3 meters/sec GPS Height Correction On

Position Horizontal Stiffness 35 Hold Strength 40 Maximum G 0.3 Range 500 meters GPS Angle 30° GPS Speed 5 meters/sec

Safety Alarm Voltage 3.5V Land Voltage 3.2V Safe Height 15 meters Autoland Descent Rate -0.8 meters/sec RTH Speed 3 meters/sec118 

# APPENDIX B. DATA LOGGING FIELDS

FIELD UNITS DESCRIPTION Reading Unitless An indexed identifier assigned to data points IMU Time Seconds The number of seconds from arming ALTA
Date YYYYMMDD The date of the reading in Universal Coordinated Time determined by received GPS signals GPS Time HH:MM:SS The Universal Coordinated Time determined by received GPS signals. GPS Longitude Degrees * 10^7 GPS determined longitude multiplied by 10^7 GPS Latitude Degrees * 10^7 GPS determined latitude multiplied by 10^7 GPS Height meters Height above the WGS84 reference ellipsoid GPS Course degrees The ground track of ALTA in degrees from true north. GPS Position North meters The distance ALTA traveled north from the starting point. A negative number indicates southward travel.
GPS Position East meters The distance ALTA traveled east from the starting point. A negative number indicates westward travel. GPS Position Up meters The distance ALTA traveled above the starting point. A negative number indicates downward travel. GPS Velocity North meters / second The GPS derived northward velocity component of ALTA. GPS Velocity East meters / second The GPS derived eastward velocity component of ALTA. GPS Velocity Up meters / second The GPS derived upward velocity component of ALTA GPS Acceleration North meters / second^2 The GPS derived northward acceleration GPS Acceleration East meters / second^2 The GPS derived eastward acceleration119 GPS Acceleration Up meters / second^2 The GPS derived upward acceleration, without gravitational acceleration IMU Position North meters The IMU derived dead-reckoned distance ALTA has traveled northward IMU Position East meters The IMU derived dead-reckoned distance ALTA has traveled eastward IMU Position Up meters The IMU derived dead-reckoned distance ALTA has traveled upward IMU Velocity North meters / second The IMU derived northward velocity component of ALTA. IMU Velocity East meters / second The IMU derived eastward velocity component of ALTA. IMU Velocity Up meters / second The IMU derived upward velocity component of ALTA. IMU Acceleration North meters / second^2 The IMU derived northward acceleration IMU Acceleration East meters / second^2 The IMU derived eastward acceleration IMU Acceleration Up meters / second^2 The IMU derived upward acceleration, without gravitational acceleration IMU Roll degrees The IMU derived roll angle where positive values indicate roll right IMU Pitch degrees The IMU derived pitch angle where positive values indicate pitch up
IMU Yaw degrees The IMU derived yaw angle where positive values are eastward and negative values westward IMU Roll Rate degrees / second The IMU derived roll rate where positive values are roll rightward IMU Pitch Rate degrees / second The IMU derived pitch rate where positive values are pitch upward IMU Yaw Rate degrees / second The IMU derived yaw rate where positive values are clockwise looking down on the vehicle IMU Acceleration X G The IMU derived body acceleration where positive values are in a forwards direction IMU Acceleration Y G The IMU derived body acceleration where positive values are in a rightwards direction120 IMU Acceleration Z G The IMU derived body acceleration where positive values are in an upwards direction and excludes gravity Compass X Unitless A component of a unit magnetic vector with positive values directed to the front when front is pointing Northward Compass Y Unitless A component of a unit magnetic vector with positive values directed to the right when front is pointing Westward
Compass Z Unitless A component of a unit magnetic vector with positive values directed to down when the underside is pointing Northward Compass Heading degrees The magnetic heading derived from the compass Position Command North m The position control loop set point in a Northerly direction referenced to take-off location Position Command East m The position control loop set point in an Easterly direction referenced to take-off location Position Command Up m The position control loop set point in an Upwards direction referenced to the take-off location Velocity Command North m/s The velocity control loop set point in an Northwards direction Velocity Command East m/s The velocity control loops set point in an Eastwards direction Velocity Command Up m/s The velocity control loop set point in an Upwards direction Acceleration Command East m/s^2 The acceleration control loop set point in a Easterly direction Acceleration Command North m/s^2 The acceleration control loop set point in a Northerly direction Acceleration Command Up m/s^2 The acceleration control loop set point in an Upwards direction Roll Command deg The roll control loop set point where increasing values are roll right right Pitch Command deg The pitch control loop set point where increasing values are pitch up121 Yaw Command deg The yaw control loop set point where positive values are for an Easterly heading and negative for Westerly Roll Rate Command deg/s The roll rate control loop set point where positive values are for rolling rightwards Pitch Rate Command deg/s The pitch rate control loop set point where positive values are for pitching upwards Yaw Rate Command deg/s The yaw rate control loop setpoint where positive values are rotating clockwise looking from the machine top Radio Roll us RC pulse width 1000-2000us where increasing values are for roll right Radio Pitch us RC pulse width 1000-2000us where increasing values are for pitch up
Radio Yaw us RC pulse width 1000-2000us where increasing values are for yaw to the right
Radio Throttle us RC pulse width 1000-2000us where increasing values are for increased throttle

Radio Mode us RC pulse width 1000-2000us where values near: 1000us = manual mode 1500us = height hold 2000us = height and position hold

Radio Home us RC pulse width 1000-2000us where values near: 2000us = Set New Home Position 1500us = RTH Off 1000us = Initiate RTH Radio Velocity Clamp us RC pulse width 1000-2000us where increasing values are for increased allowable velocity Radio Climb Rate Clamp us RC pulse width 1000-2000us where increasing values are for increased allowable climb rate Roll Control a.u. Control loop calculation for roll axis122 Pitch Control a.u. Control loop calculation for pitch axis Yaw Control a.u. Control loop calculation for yaw axis Climb Control a.u. Control loop calculation for lifting thrust Motor Command 1-6 Unitless Scaled 0-1 representing demanded thrust from motor Motor speed 1-6 RPM Propeller speed at last telemetry update Motor Voltage 1-6 Volts Bus voltage measured at ESC from last telemetry update Motor Current 1-6 Amps Motor field current measured at ESC from last telemetry update Motor Power 1-6 Watts Measured ESC power consumption Motor Energy 1-6 Watt-hours Integrated ESC power consumption - can be used to compare motor efficiencies or thrust skew
Motor Accel 1-6 a.u. High pass filtered RMS vibration level measured at ESC - can be used to compare motor / propeller imbalance Motor Temp 1-6 °C ESC temperature measured from last telemetry update Motor Status 1-6 bit-field ESC fault condition monitor GPS Sats Satellites Number of satellites used for position calculation by GPS GPS Hacc meters Horizontal position accuracy reported by GPS GPS Sacc meters / second Horizontal speed accuracy reported by GPS GPS Jamming Indicator Unitless Indicator of GPS signal jamming activity with 0 = no jamming and 255 = strong jamming Voltage Volts Main battery voltage measured by the flight controller Current Amps Total battery current inferred from ESC measurements
Capacity Amp-Hours Integrated battery capacity consumed - to be used in conjunction with battery recharge measurements - ascertaining battery health and expected flight times Power Watts Total battery power123 Energy Watt-hours Integrated battery power - to be used in conjunction with battery recharge measurements - ascertaining battery health and expected flight times 5V Monitor Volts Measured voltage of the 5 volts bus Mircocontroller Tempurature oC Flight controller PCB temperature Barometer Tempurature oC Barometetric sensor temperature Barometric Altitude meters Height above take-off location derived by pressure measurement Status a.u. Flight controller status - indicating things like auto-land Fail bitfield Machine alarm register indicating particular system failures GPS Loss of Signal binary Declared if GPS signal is not adequate for safe position hold Radio Loss of Signal binary Indicates complete radio controller loss of signal Radio A Loss of Signal binary Indicates loss of signal from radio A Radio B Loss of Signal binary Indicates loss of signal from radio B Mag Bad binary Alarm indicating compass magnitude is corrupted Battery Flat binary Indicates if the low voltage alarm is active Motors Hot binary Indicates if the motor temperature alarm is active Radio A Drops number Accumulated signal drops from radio A Radio B Drops number Accumulated signal drops from radio B Magnetometer Bad binary Alarm indicating compass magnitude is corrupted Position Lock binary Status indicating position estimation filter has locked Heading Lock binary Status indicating heading lock is active Attitude Mode register Status indicating angle or rate control mode Position Mode register Status indicating position control mode124 Height Mode register Status indicating height control mode CRC Failures number Internal communication errors I2C Timeouts number Count of the number of internal I2C communication bus drops CAN Fails number Count of the number of failures within the CAN communication bus Global CAN Fails number Count of the number of failures of the entire CAN communication bus Gyro Bias R number Arbitrary number indicating roll gyro bias Gyro Bias P number Arbitrary number indicating pitch gyro bias Gyro Bias Y number Arbitrary number indicating yaw gyro bias Accel Bias X meters / second^2 Accelerometer X axis bias Accel Bias Y meters / second^2 Accelerometer Y axis bias Accel Bias Z meters / second^2 Accelerometer Z axis bias Extended Status bitfield Status of extended internal alarms 5V Alarm binary Indicates a failure of the 5 volt bus