FAA Regulation

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

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 ...

Yes, all sUAS aircraft weighing over .55 lbs. are subject to Part 107 No, this sUAS operation is not subject to Part 107.  Yes, this sUAS operation is subject to Part ...

Only when visual observers participate in the operation. Alone, if operating during daylight hours. Under the direct supervision of a Remote PIC.  

Continue the mission, airplanes are not allowed to fly lower than 500 feet AGL unless around an airport. Give way and stay clear from the crop duster.   Continue the mission, ...

1 calendar month. 7 days. 14 days. 

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.

Every 8 months. Every 12 months. Every 24 months. 

Use a “buddy box” system with two controllers. Use a radio system to instruct the non-rated pilot. The Remote PIC cannot supervise a non-rated pilot.

Not to exceed 30 days. Within 10 days. Any time.