Under 14 CFR § 107.51(a), what is the maximum groundspeed allowed for a small unmanned aircraft?

Why: 14 CFR § 107.51(a) sets the maximum groundspeed of a small unmanned aircraft at 87 knots (100 miles per hour).

• 100 knots is not the part 107 limit; it is a round but incorrect number that overstates the actual 87-knot limit.
• 65 knots understates the actual limit; it may be confused with other UAS speed figures but is not the § 107.51(a) value.