36 SPEKTRE OPERATIONS MAN. – REV. A 3D ROBOTICS, INC

Battery Mounting

1. Remove a charged battery from the storage/ shipping case.

2. Attach the battery to the underside of the fuselage ensuring that the front of 

the battery is firmly against the stop.

3. Secure the battery with the two Velcro straps.

4. Connect battery power to aircraft main power cable when ready to begin the 

preflight process.

Aircraft Inspection

Aircraft Structure

1. Inspect arm and leg mounting points for integrity and secureness. Signs of 

wear and fatigue should be noted in the aircraft logbook and addressed 

before flight.

2. Check that all fasteners are present and secure on the entire airframe.

Figure 20 - Aircraft Structure Inspection

Check fasteners

and entire 

structure
3D ROBOTICS, INC SPEKTRE OPERATIONS MAN. – REV. A 37

Propellers

1. Inspect propellers for cracks or delamination. Do not fly the aircraft with a 

compromised propeller. 

2. Propeller fasteners should be tight and secured with thread locker. 

 

Figure 21 - Propeller Inspection

Motor Pod

1. The aircraft motors should spin freely without noticeable friction. Ensure the 

motors spin smoothly and they are free of FOD. 

2. Check that all fasteners are present and secure. 

Figure 22 - Motor Pod Inspection

Check prop tip 

and leading edge

Check and 

clear motor of 

FOD.

Rotate the 

motor by hand 

to confirm 

smooth 

operation.

Check all 

fasteners. 

Check screws and 

entire structure
38 SPEKTRE OPERATIONS MAN. – REV. A 3D ROBOTICS, INC

Aircraft Battery

1. The battery should be free of punctures, swelling and other signs of visible 

damage. Do not use the batteries if they are exhibiting signs of wear of visible 

damage. 

2. The battery and aircraft main power connections should be clean and free of 

FOD. If the connectors are blackened from connection arching, replace the 

connector(s) before flight. 

Figure 23 - Battery Inspection

Check battery for 

swelling and visible 

damage.

Check connectors for 

FOD and signs of wear.
3D ROBOTICS, INC SPEKTRE OPERATIONS MAN. – REV. A 39

Payload

1. Inspect the payload mounting points and hardware ensuring that all fasteners 

are secure. 

2. Ensure that the isolation dampeners are properly installed and free of cracks 

or signs of aging. 

3. Check the movement of the sensor along all the axes of rotation, ensuring

smooth movement and there is no FOD present. 

4. Wipe the lens with an appropriate cloth to remove dust and debris. 

Figure 24 - Payload Inspection

Check movement and ensure that all 

moveable intersections are clean.

Check all fasteners are present and 

secure.
40 SPEKTRE OPERATIONS MAN. – REV. A 3D ROBOTICS, INC

Ground Control Station Assembly 

This section of the manual describes the steps to properly assemble the ground 

control station (GCS) for the Spektre. The operator should always follow the 

prescribed preflight checklist before every flight.

1. Inspect the GCS shipping case and ensure that all parts are present. If there 

are parts of the GCS missing, do not fly.

2. Setup the GCS computer on a stable and clean surface. 

3. Power on the GCS computer and ensure the battery level is adequate for 

operations. If available, plug the computer into a power source. 

4. Inspect the USB connection on the telemetry radio for FOD then plug the 

telemetry radio into the GCS computer.

5. Place the telemetry radio up and away from obstructions that may block RF 

signals. 

6. Orient the antennas vertically and offset to each side, creating a “V” shape. 

This will help ensure that the GCS antenna polarity matches the aircraft while 

in flight. 

 

Figure 25 - Telemetry Radio

7. Launch the Mission Planner program
3D ROBOTICS, INC SPEKTRE OPERATIONS MAN. – REV. A 41

Remote Video Terminal Setup

As there are many payload options for the Spektre; there are equally abundant 

options for receiving the video on the ground. Generalized procedures for setup 

are listed below. For details about a specific part or component, please see the 

manufacturers information sheets.

1. Inspect and inventory all parts of the Remote Video Terminal (RVT) system.

2. Setup the video display on the mount provided with the system. This could be 

a tripod or table mounted display.

3. A video receiver (Rx) will be mounted to the display or integrated into the 

display. The antennas will be inspected for FOD before being installed onto 

the receiver. Orient the antennas in a manner that will allow for best 

reception/ coverage. 

4. Secure the battery or power source for the display and Rx.

5. Connect the power source to the display and Rx. 

Figure 26 - Remote Video Terminal Example
42 SPEKTRE OPERATIONS MAN. – REV. A 3D ROBOTICS, INC

Radio Control Transmitter (RCTx) Setup

The Spektre aircraft comes with a radio control box that is used by the External 

Pilot (EP) for manual control flight modes, autonomous mode augmentation and 

flight abort procedures. As it is an integral part of the system and many flight 

modes are reliant on it, special care and handling is required. Setup procedures 

are listed below and inspection points highlighted in figure 27.

1. Inspect the radio ensuring that all switches and gimbals (joysticks) are 

functional. Excessive dirt or dust that collects in the gimbal mechanism can 

inhibit movement, which can cause control issues in manual flight mode(s).

2. Power on the radio and confirm that the internal battery is fully charged or 

adequate for the length of operations. 

3. As most modern RC transmitters are capable storing information for multiple 

models, the user must ensure that the correct model is selected. If the 

incorrect model is active, the RC transmitter will not communicate with the 

receiver on the aircraft side. 

4. For safety and to preparation to arm the aircraft, set the throttle stick at the 

lowest setting. 

5. Set all moveable switches to the position furthest away for the user as he/ she 

is holding the transmitter. This ensures that the flight mode and other 

functions are in a preflight state. Figure 28 shows the RCTx switch functions. 

Switches not listed are inhibited. 

Figure 27 Inspection - RCTx Setup and

Verify correct 

model and 

adequate battery.

Check joystick 

functionality.
3D ROBOTICS, INC SPEKTRE OPERATIONS MAN. – REV. A 43

Figure 28 - RCTx Switch Mapping

3-position switch for 

changing flight modes. 

• Away = Stabilize

• Middle = Loiter

• Toward = RTL

Rear left slider used for 

camera pitch control 

2-position switch used for 

camera change, if applicable 

3-position switch used for 

camera zoom, if applicable 

Rear right slider user for 

camera yaw control with a 3-

axis gimbal 
44 SPEKTRE OPERATIONS MAN. – REV. A 3D ROBOTICS, INC

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3D ROBOTICS, INC SPEKTRE OPERATIONS MAN. – REV. A 45

Aircraft Launch Procedures

1. Determination of the wind direction is critical for launch. The aircraft should 

never be launched downwind as it could cause a vortex ring state situation. 

2. The AVO should once again verify that all the aircraft systems are within 

acceptable limits. 

3. For arming and safety, the aircraft should be in the Stabilize flight mode. The 

EP will verify this on the RCTx and the AVO will confirm this in the MP HUD.

4. The EP will power the payload and check that is operational. 

5. The EP will now clear all personnel from the launch area and disable the 

safety switch. The safety switch will glow solid red when it is disabled. 

6. If applicable, begin recording the sensor data on the onboard DVR.

7. The EP will power on the navigation lights at the time.

8. The EP will arm the aircraft by holding the left stick on the RCTx down and to 

the right for >5 seconds. The propellers will spin upon arming. The AVO will 

also see “ARMED” in large red text in the MP HUD indicating that the aircraft 

is armed. 

8.1.During the arming sequence, the Autopilot status LED will flash Red-Blue 

rapidly indicating that the gyros and barometric sensor are being 

calibrated. It is critical that the aircraft is not moving during this phase. 

9. The AVO will now set the aircraft flight mode to AUTO by pressing the AUTO 

button in the Actions Tab. Confirmation of this is depicted in Figure 29.

Warning

Loss of aircraft or injury to personnel or property can occur if these steps are not 

followed carefully.
46 SPEKTRE OPERATIONS MAN. – REV. A 3D ROBOTICS, INC

Figure 29 - Auto Mode Selection in MP

10.The EP will now give a verbal warning that the aircraft is launching and raise 

the throttle on the RCTx to launch the aircraft. 

Auto mode selection

“Auto” displayed after 

flight mode is 

changed.
3D ROBOTICS, INC SPEKTRE OPERATIONS MAN. – REV. A 47

Normal Operational Procedures

Flight Limitations:

• The aircraft should not be flown in the proximity of high voltage power lines, 

certain types of radar any other high power emitting devices. 

• A thorough site survey should be accomplished before any flights occur. 

Airspace and vertical obstructions should be well known and briefed prior to 

flights. 

• See Table 2 – Spektre Aircraft General Specifications for environmental 

limitations. 

• The AVO and/ or EP will not intentionally place the aircraft into a non-normal 

state of operation. 

1. While in flight, the EP and observers should not lose visual line of sight with 

the aircraft. In the event of an airspace incursion, the EP will take manual 

control of the aircraft and manually fly the aircraft to a safe airspace or 

perform a flight abort procedure. 

2. The AVO will monitor the aircraft’s system health and flight tracking during 

normal operations. Large deviations in flight path tracking or altitudes may be 

indicative of a system malfunction. If this is witnessed, the AVO will alert the 

EP to take over manually.

3. The AVO will also ensure that the battery voltage doesn’t reach a state of low 

voltage or a < 20% capacity. If a higher than normal battery depletion rate is 

witnessed, the AVO will notify the EP to take over manually and land the 

aircraft as soon as is reasonable. 

4. As GPS is the primary source for position information and augments other 

sensors in the flight controller, a healthy GPS solution is critical. If the AVO 

witnesses a state where the visible satellite count drops below 5 or the HDOP 

raises above 2.5, he will notify the EP so the aircraft could taken over 

manually. 

5. Proper communication between the AVO, EP and other flight crewmembers is 

crucial for sufficient situational awareness during flight operations. It is also 

important to ensure a “sterile cockpit” so communications are not inhibited in 

any way. 
48 SPEKTRE OPERATIONS MAN. – REV. A 3D ROBOTICS, INC

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3D ROBOTICS, INC SPEKTRE OPERATIONS MAN. – REV. A 49

Aircraft Failsafes and Non-Normal Flight Procedures

In the event of a state of emergency, or non-normal flight, the AVO and EP shall 

perform the following procedures to mitigate risk of damage to personnel, 

property or the aircraft itself. It is imperative that the flight crew first establishes 

that the aircraft is flying and navigating well. If not, communication between the 

flight crewmembers and non-crewmembers must cease.

1. Aircraft Battery Failsafe

The battery failsafe can be setup and changed in the mandatory hardware tab 

under the Initial setup window. The operator has the option of setting a low 

voltage and/ or a capacity reserve (mAh) that will trigger the failsafe when the 

threshold is met. Characterization of the discharge curve will be necessary to 

establish viable threshold numbers.

Table 9 - Aircraft Battery Failsafe Details

Failure Type Low Main Battery Power

Condition Battery voltage exceeds low limit for more than 10 seconds 

or Estimated battery consumed exceeds.

Warning Low voltage audible alert – Battery voltage text in HUD 

colored in red – Aircraft onboard buzzer tone.

Operator Action

Autonomous Flight: Based on failsafe settings aircraft will 

autonomously Return to Launch or Land. Operator will 

monitor aircraft through landing sequence.

Manual Flight: External Pilot will engage Stabilize flight 

mode and navigate the aircraft to a safe landing area.

Flight Termination Procedure: RCTx throttle stick will be 

lowered to minimum position and Stabilize Flight mode 

engaged to stop motors.
50 SPEKTRE OPERATIONS MAN. – REV. A 3D ROBOTICS, INC

2. Loss of GPS Signal

The GPS failsafe is activated by default, but can be disabled by the user if 

necessary. Failsafe actions are adjustable by the user in the Full Parameters 

Window.

Table 10 – Loss of GPS Failsafe Details

Failure Type Loss of GPS Signal

Condition 3 dimensional lock is lost or a glitch is detected that lasts 

longer than 5 seconds.

Warning “BAD POSITION” displayed in red text in HUD.

Operator Action

Autonomous Flight: Aircraft stops navigation and Lands or

Aircraft switched to ALT HOLD flight mode.

Manual Flight: External Pilot will engage Stabilize flight 

mode and navigate the aircraft to a safe landing area.

Flight Termination Procedure: RCTx throttle stick will be 

lowered to minimum position and Stabilize Flight mode 

engaged to stop motors.
3D ROBOTICS, INC SPEKTRE OPERATIONS MAN. – REV. A 51

3. Geo-Fence Excursion

The geo-fence function provides the operator with an invisible ceiling and/ or 

horizontal wall that prevents the aircraft from continuing on excursions outside of 

the specifications of the fence. The dimensions of the fence are user adjustable 

with the ceiling being measured from the ground altitude relative to the aircraft 

when it is armed (0 AGL), to the ceiling or altitude specified. The horizontal walls 

are built in a circular fashion radiating outward from the point of where the aircraft 

is armed and are also adjustable by the operator.

In the event of a fence breach the failsafe function will engage per the operator’s 

settings as noted in the table below. It is possible for the operator to attempt 

manual control of the aircraft after the geo-fence failsafe has been activated and 

in that case a backup fence is erected 20 meters further out and up from the 

original fence. If the aircraft continues on a trajectory away from the HOME 

position and the backup fence is breached, the failsafe will once again become 

engaged. 

The operator is given every opportunity to regain control of the aircraft before an 

uncontrolled landing is commanded; however, in the event of a rouge flight where 

the aircraft cannot be commanded HOME, the aircraft will be forced to land once 

it reaches 100 meters distance out from the original fence wall. 

Table 11 – Geo-Fence Failsafe Details

Failure Type Geo-Fence Breach

Condition Vehicle travels outside of Geo-fence boundary

Warning “Geo-Fence Breach” is displayed on HUD

Operator Action

Autonomous Flight: Based on failsafe settings aircraft will 

autonomously Return to Launch or Land. Operator will 

monitor aircraft through landing sequence.

Manual Flight: External Pilot will engage Stabilize flight 

mode and navigate the aircraft to a safe landing area.

Flight Termination Procedure: RCTx throttle stick will be 

lowered to minimum position and Stabilize Flight mode 

engaged to stop motors.
52 SPEKTRE OPERATIONS MAN. – REV. A 3D ROBOTICS, INC

4. EKF/ Inertial Navigation Health

The GPS failsafe is activated by default, but can be disabled by the user if 

necessary. Failsafe actions are adjustable by the user in the Full Parameters 

Window. A detailed description of the EKF Variance failsafe is described in table 

12.

Table 12 – EKF Variance Failsafe Details

Failure Type EKF Variance

Condition Position and velocity measurements conflict with the EKF 

for more than one second.

Warning Yellow color displayed on the autopilot status light and “EKF 

Variance” displayed in HUD.

Operator Action

Autonomous Flight: Aircraft is switched to a manually 

augmented flight mode. The aircraft will then begin the 

landing sequence. The EP will control aircraft attitude and 

position until landing. 

Manual Flight: External Pilot will ensure Stabilize Flight 

mode and navigate the aircraft to a safe landing area.

Flight Termination Procedure: RCTx throttle stick will be 

lowered to minimum position and Stabilize Flight mode 

engaged to stop motors.

5. Telemetry/ GCS Link Failsafe 

If the link between the GCS and the aircraft is lost the aircraft will activate the 

GCS failsafe based on the operator’s settings. The aircraft will not return to the 

mode it was in before the loss of communication; however, and the operator will 

have to change the flight mode out of the failsafe flight mode to retake control.

Table 13 – Telemetry/ GCS Link Failsafe

Failure Type Telemetry/ GCS Link Failsafe

Condition Loss of Telem/ GCS link for more than 5 seconds. 

Warning No data updates in MP and a red “X” will cover the RSSI 

graphic.

Operator Action

Autonomous Flight: Based on user settings the aircraft will 

continue with the autonomous mission or Return To Launch. 

If the aircraft is within 6.5 feet of the home position and GPS 

is lost, the aircraft will Land autonomously.

Manual Flight: When in line of sight - External Pilot will 

engage Stabilize Flight mode and navigate the aircraft to a 

safe landing area.

Flight Termination Procedure: RCTx throttle stick will be 

lowered to minimum position and Stabilize Flight mode 

engaged to stop motors.
3D ROBOTICS, INC SPEKTRE OPERATIONS MAN. – REV. A 53

6. RCTx Link Failsafe 

The operator has the option to set a failsafe function that is activated when the 

contact between the radio controller (RC) and the RC receiver is lost. There are 

several scenarios where the RC signal can be lost and the function of the failsafe 

will change accordingly:

Table 14 – RCTx Link Failsafe

Failure Type RCTx Link Failsafe

Condition Communication from the RCTx to the autopilot stops

Warning No data updates in MP and a red “X” will cover the RSSI 

graphic.

Operator Action

Autonomous Flight: Based on user settings the aircraft will 

continue with the autonomous mission, Land at the point, 

which the failsafe is engaged, or Return To Launch. 

Manual Flight: Maintain a throttle stick position higher than 

minimum. If possible, manual control will re-establish itself 

when in range. 

Flight Termination Procedure: No flight termination 

procedure available. 
54 SPEKTRE OPERATIONS MAN. – REV. A 3D ROBOTICS, INC

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3D ROBOTICS, INC SPEKTRE OPERATIONS MAN. – REV. A 55

Aircraft Recovery and System Disassembly 

Extra awareness is required during the recovery phase of flight. It is best practice 

to ensure that non-flight crewmembers are clear of the recovery area during 

recovery. 

1. The AVO will command the aircraft to RTL and begin the landing sequence or 

this will happen automatically if a RTL command point is built into the flight 

plan.

2. The EP and observers will ensure visual line of sight throughout the recovery 

phase of flight. 

3. When the aircraft touches down, the EP will lower the throttle stick to it’s 

lowest setting to ensure that the autopilot disarms the motors. 

4. The EP will arm the safety switch on the aircraft. The switch will flash when 

armed (in safe mode).

5. Power down the payload and navigation lights at this time. 

6. Remove power to the aircraft by disconnecting the aircraft battery. 
56 SPEKTRE OPERATIONS MAN. – REV. A 3D ROBOTICS, INC

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3D ROBOTICS, INC SPEKTRE OPERATIONS MAN. – REV. A 57

Appendix

Appendix A - Flight Mode Description

There are multiple flight modes available in ArduCopter 3.2; however, there are 

four primary modes used in normal mission profiles. These flight modes are 

described in table 15.

Table 15 - Flight Mode Descriptions

STABILIZE

Stabilize mode is what can be considered closest to manual flight 

mode and what would be used in an emergency recovery when the 

aircraft is in visual LOS. Stabilize automatically levels the vehicle and 

maintains the current heading, while allowing the pilot full control over 

the throttle and axial control up to the bank angle maximums. 

LOITER

In loiter mode; the vehicle maintains a consistent location, heading, 

and altitude. This can be adjusted by using the sticks on the pilot 

handheld controller: 

• Horizontal location can be adjusted with the Roll and Pitch 

control stick.

• The aircraft heading can be set with the Yaw control stick.

• Altitude can also be adjusted with the Throttle control stick

operating as a variable rate control.

RTL

In return to launch (RTL) 

mode, the copter navigates 

from its current position to 

hover above the home position. 

The behavior of RTL mode can 

be controlled by several 

adjustable parameters.

AUTO

In autonomous (Auto) mode, 

the vehicle will follow a preprogrammed mission script 

stored in the autopilot, including 

autonomously navigated 

waypoints, commands, and 

events.
58 SPEKTRE OPERATIONS MAN. – REV. A 3D ROBOTICS, INC

Appendix B - Maintenance Schedule Matrix

Table 16 - Spektre Maintenance Schedule

Spektre	Inspection	and	Maintenance	Schedule

																												Interval

Service

Before	

Every	

Flight	

As	Needed 150	hours

Propellers																		

Inspect	for	damage X

Electronic	Speed	

Controllers X

Motors																							

Inspect	for	wear	&	FOD X

Inspect	fasteners	and	

structure

X

Propellers																		

Replace X

Motors																							

Replace X
3D ROBOTICS, INC SPEKTRE OPERATIONS MAN. – REV. A 59

Spektre Operations Checklist

Preflight Briefing Guidelines

Airspace Coordination

Contact all applicable air-authorities and notify them of your intentions. This 

should include date and times of flight, altitudes and airspace.

Flight Objectives

• Aircraft and sensor(s)......................Cover aircraft/ sensor specifics, limitations

• Flight Profile .......................... Altitude, Range, Endurance, LOS/ RF concerns

• Risk Mitigation.............. Loss Comms plan, Battery failsafe/ Voltage, crew rest

• Flight Crew ................................................Identify AVO, EP and back up pilots

• Ancillary Personnel.............................................................................................

.......................................... Identify observers, communications and safety officers

Safety Items

• Environmental ........Conditions within operational limits and favorable forecast

• Takeoff and launch area..........Identity vertical obstructions and LOS concerns

• Non-Essential Personnel............................................... Clear from launch area

• Propellers .................... Personnel must stay out of the arch and standoff 20 ft.

• Other hazards.......................Wildlife, sun/ heat, tripping hazards, food – water

• PPE .......................................Personnel will don safety glasses, hardhats, etc.

• Fire extinguisher.................................................................................................

...............................Manned in the event of a downed aircraft or charging hazards 

Non-Normal Flight Procedures

Ensure that all flight crewmembers are familiar with the procedures and rehearse 

possible situations.
60 SPEKTRE OPERATIONS MAN. – REV. A 3D ROBOTICS, INC

Preflight Procedures

Warning

Failure to follow the directions prescribed in this checklist can lead to loss of 

aircraft and/ or injury to personnel and property.

Caution

The Non-Normal flight procedures should be committed to memory to ensure 

proper execution of a procedure in the case of an in-flight emergency.

Ground Station Assembly

Laptop/ Tablet..........................................................................................Power On

Battery life/ Power Source/ Back up Power Source.................................................

............................................................ Adequate for operations with safety margin

Telemetry Radio ...............Connect to ground station and orient antenna vertically

Mission Planner ............................................................................................... Start

Remote Video Terminal (RVT) Assembly

Video Display...............................................................................Setup and secure

Video Receiver ............................................................. Setup and install antennas

Monitor/ Receiver Power Source..................................................... Mount/ Secure

Monitor/ Receiver............................................Connect power source to power ON

Aircraft Assembly

Airframe and structural connections ............................................................ Inspect

Propellers..............................................Inspect for damage and fastener tightness

Motors................................................... Inspect function, fasteners and clear FOD

Payload............................................................. Inspect functionality and mounting

Lens Cap .............................................................................Remove (if applicable)

Aircraft Power Source.................................... Install Batteries/ Ensure secureness

Radio Control Transmitter Setup

Inspect Radio.........................Check that all gimbals and switches are operational

Power On........... Ensure battery life is adequate for operations with safety margin

Model Selection .............................Ensure proper model is selected (if applicable)

Throttle Stick..........................................................................Set to lowest position

Switches .................................................................................................... All away
3D ROBOTICS, INC SPEKTRE OPERATIONS MAN. – REV. A 61

Aircraft Preflight 

Aircraft Propellers .................................................. Clear all objects and personnel

Aircraft ........................................................Connect battery to aircraft main power

Mission Planner ..........................................................................Select Com Port #

Mission Planner ................................................................Select Baud Rate 57600

Mission Planner .................................Press Connect to establish communications

Communications .....................................................................RSSI value is > 90% 

Battery Level.............................................Greater than 25.1 volts / 100% capacity

Flight Mode ................................................................Confirm Stabilize in MP HUD

Aircraft attitude/ heading............. Check pitch, roll movement matches in the HUD

GPS ...............................3D Fix displayed in HUD / > 5 satellites and < 2.5 HDOP

Flight Plan Building

Planner Window.............................................................................................Select

Home Location Link .................................................................................................

......................Select Home Position link to move map to aircraft’s current position

Clear Mission............................................................................Select – Write WPs

Default Alt ...........................................................Set desired altitude for waypoints

Waypoints and Command Points ............................................... Add as necessary

Takeoff and Land WPs ............................................................................................

....... Ensure that the TO and Land WPs are higher than the tallest vertical objects

Waypoints ...............................................................................................Write WPs

Mission Planner ......................................................... Close Flight Planner window

Aircraft Launch

Wind Direction ........................................................ Confirm appropriate for launch

Aircraft ................................................Battery, GPS, RSSI all within specifications

Flight Mode ..............................................................Stabilize / Confirm in MP HUD

Payload......................................................................Power and confirm operation

Navigation Lights .....................................................................................Power On

Arming Safety Switch......................................................Disarm – Clear personnel

Payload............................................................................................ Start recording 

Aircraft ........................ EP - Arm with Transmitter – AVO confirm ARMED in HUD

Mission Planner .................Select Auto – Confirm in HUD - 0>1 - Announce to EP

R/C transmitter...................Increase throttle to Mid-stick position to launch aircraft

Normal Flight Procedures 

External Pilot and Observers .............. Maintain visual line of sight with the aircraft

AVO ........................................................ Monitor WP tracking and aircraft Altitude

Battery Health ........................................................................................ >21.0 volts

GPS ...............................3D Fix displayed in HUD / > 5 satellites and < 2.5 HDOP

Communications .................................AVO and EP will relay pertinent information
62 SPEKTRE OPERATIONS MAN. – REV. A 3D ROBOTICS, INC

Non-Normal Flight Procedures / Aviate - Navigate - Communicate

Battery .............................................................Voltage < 21.0 = RTL immediately

GCS Loss Comm.......................... Monitor aircraft flight path and RSSI in HUD

RCTx Loss Comm. ........................Monitor aircraft RTL + Mid. throttle position

EKF Variance............................. Stabilize flight mode and/or flight termination

Bad GPS.......................................... Stabilize flight mode and land in safe area

Uncontrolled Flight.............................. Stabilize flight mode + flight termination

Aircraft Recovery and Disassembly

Aircraft ............................................................................................ Command RTL

End of flight...................... Monitor aircraft through the autonomous landing phase

Aircraft touchdown ..............Ensure the aircraft disarms by lowering throttle to Min

Arming Safety Switch.....................................................Arm (ensure blinking light)

Payload and Light Switch ........................................................................ Turn OFF

Aircraft Battery .......................................................................................Disconnect
3D ROBOTICS, INC SPEKTRE OPERATIONS MAN. – REV. A 63

Notes
64 SPEKTRE OPERATIONS MAN. – REV. A 3D ROBOTICS, INC