The Part 107 test asks what a remote pilot may do in an emergency, what counts as one, and how to prepare for things going wrong.
Brief before you fly
Part 107 requires the remote pilot to brief everyone directly taking part on the operating conditions, emergency and contingency procedures, roles and responsibilities, and potential hazards.
What an emergency is
An in-flight emergency is an unexpected, serious situation needing urgent action. A low-battery landing or a small deviation from the planned path is not, on its own, an emergency.
Authority to deviate
In an emergency that requires immediate action, the remote pilot may deviate from any Part 107 rule as far as needed to meet it. If the FAA asks, the pilot must then send a written report of the deviation. The 10-day deadline belongs to accident reporting, not to this report.
Lost link
A lost link is an interruption or loss of the control link, after which the aircraft performs a predictable or planned maneuver, such as hovering or returning home. Most small drones use the unlicensed 2.4 and 5.8 GHz bands shared with Wi-Fi, so interference can cause loss of control and flyaways.
Lithium battery fires
Lithium batteries are highly flammable. A fire can start from a short circuit, improper charging, extreme heat, crash damage, mishandling or a defect, and a battery fire in flight can cause loss of control.
After an accident
Report to the FAA within 10 calendar days any accident causing serious injury, loss of consciousness, or more than $500 of damage to property other than the drone.