3DR Solo S110A User Manual - 4.8  Altitude Limit

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4.8  Altitude Limit

Always fly at appropriate altitudes for your flying location and local regulations. Solo cannot avoid obstacles on its

own, so always select altitudes that avoid any obstacles, such as trees, buildings, and power lines.

Solo includes a safety fence enabled by default at 150 ft. (46 m). If Solo reaches the altitude limit, it stops ascending 

and limits throttle input to stay below the altitude limit. To adjust the altitude limit, see Section 8.7. FAA

regulations mandate a maximum altitude of 400 ft. to avoid potential conflicts with manned aircraft and represents a

safe line-of-sight altitude. 

4.9  Emergency Procedures

If you experience a problem in flight, use one of the following emergency procedures to stop Solo, end your flight, or 

shut off the motors.

4.9.1 

Pause

The controller’s Pause button allows you to stop Solo in mid-air. Solo hovers at the paused location until given 

another command. Use the Pause button to stop Solo from hitting an obstacle or to reorient Solo for navigation. 

During Return Home or Land, you can pause Solo and stop the landing by pressing Pause. Pause is available only 

with GPS lock.

4.9.2 

Regain Manual Control 

Keep the controller easily accessible at all times during flight, including during Smart Shots, and be prepared to 

regain manual control at any time. To return to standard flight during Smart Shots, Return Home, or Land, press the 

Fly button.

4.9.3 

Return Home

If Solo acquired GPS lock prior to takeoff, you can return it to the launch point and land by pressing Return Home 

on the controller. If you receive a low-battery notification or want to quickly end your flight, press Return Home. Solo 

does not avoid obstacles while returning home; always verify that the return path is clear before activating Return 

Home.

4.9.4 

Land

To land Solo at its current position, press and hold the Fly button. To exit the landing procedure at any time, lift the 

throttle. If Solo does not have GPS lock, automatic positioning is not available as Solo descends, and drifting can 

occur depending on environmental conditions.