FAA Regulation

Person manipulating the controls.  Visual observer. Remote Pilot in Command (Remote PIC).

No, the other people in the park are not on notice.  Yes, as long as the park is not busy enough that it would be considered an open-air assembly of human beings.

Only when the operator will be paid for commercial services. All civilian small UAs weighing greater than .55 pounds must be registered regardless of its intended use.  When the small UA ...

Compliant with Part 107. Part 107 does not apply to this scenario. Not compliant with Part 107. 

600 feet AGL. 500 feet AGL. 400 feet AGL.

Civil and public aircraft operations. Public and military operations. Civil operations. 

you may fly your drone in the TFR since your company is sponsoring a team at the race. flying your drone is allowed if you notify all non-participating people of the closed course UA operation. the TFR applies to all ...

Flying in a prohibited area. Flying without Remote ID. Flying in class B airspace without ADSB-Out.

The Remote Pilot in Command (RPIC). The owner of the aircraft. The FAA.

must not cause injury equivalent to 25 foot-pounds of kinetic energy upon impact. be operated in accordance with the operating limitations specified in the approved Flight Manual. be 0.55 pounds or ...