Under 14 CFR Part 107, what is the maximum groundspeed for a small unmanned aircraft?
A87 knots (100 mph)✓ Correct answer
B100 knots (115 mph)
C75 knots (86 mph)
Why →Under 14 CFR § 107.51(a), the maximum groundspeed for a small UAS is 87 knots (100 mph). This applies at all times during flight operations.
The trap →"100" looks like the clean round number to pick, but 100 knots is 115 mph, well above the limit. The magic number is 87 knots.
Field note →The speed limit is a highway number, 100 mph. The knot figure, 87, is the oddball to memorize.