FAA Regulation

No more than three as long as the Remote PIC maintains visual line of sight. As many as he/she can handle. No more than one. 

does not contain any exposed rotating parts that would lacerate human skins upon impact. has an airworthiness certificate issued under Part 21.  is labeled as Category 4.

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

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 ...

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

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

14 days. 2 calendar months. 30 days.

No, the carriage of hazardous material is prohibited under Part 107.  Yes, your BVLOS waiver allows you to fly further than 10 miles. No, 10 miles is too far even with ...

100 mph 100 kts 87 mph

55 lbs. or less. 55 kg or less. Less than 55 lbs.