Final answer:
The maximum indicated airspeed at which a person may operate an aircraft below 10,000 feet and MSL is 250 knots (288 mph), unless otherwise authorized.
Step-by-step explanation:
The maximum indicated airspeed at which a person may operate an aircraft below 10,000 feet and MSL is determined by the aircraft's operating limitations. In general aviation, unless otherwise authorized, the maximum indicated airspeed is limited to 250 knots (288 mph) for aircraft below 10,000 feet and MSL. This limitation is set by the Federal Aviation Administration (FAA) to ensure safe operations and prevent excessive airspeeds in congested airspace.