Which FAA exams test 14 CFR 107.51?

This regulation is tested on the following FAA exams: UAG. These include the FAA Remote Pilot (Part 107).

Part 107Small Unmanned Aircraft Systems

14 CFR 107.51 — Operating Limitations for Small Unmanned Aircraft

Maximum altitude 400 feet AGL, maximum speed 100 mph (87 knots), maximum weight 55 pounds, minimum visibility 3 statute miles.

Regulation Text

A remote pilot in command must ensure that the small unmanned aircraft operates: below 400 feet above ground level, unless within 400 feet of a structure; at a groundspeed no greater than 87 knots (100 miles per hour); with weather visibility from the control station of no less than 3 statute miles; below any cloud layer and no less than 500 feet below clouds and 2,000 feet horizontally from clouds; and the aircraft weighs less than 55 pounds including payload.

Note: This is an excerpt. Refer to the full regulation in eCFR for the complete text.

Plain-English Explanation

The key Part 107 operating limits: max 400 feet AGL (unless flying near a structure, then within 400 feet of it), max 100 mph, minimum 3 miles visibility, 500 feet below clouds and 2,000 feet horizontal from clouds, and max takeoff weight 55 pounds. The 400-foot altitude limit keeps drones below most manned aircraft traffic patterns. Flying near a structure allows going up to 400 feet above the structure. These are the most commonly tested numbers on the Part 107 exam.