***Link*** :: [§ 91.117 Aircraft speed.](https://www.ecfr.gov/current/title-14/section-91.117) ***Description*** :: `= this.link` ***Author*** :: [[FAA]] #### Key Quotes * no person may operate an aircraft below 10,000 feet MSL at an indicated airspeed of more than 250 knots * no person may operate an aircraft at or below 2,500 feet above the surface within 4 nautical miles of the primary airport of a Class C or Class D airspace area at an indicated airspeed of more than 200 knots... * No person may operate an aircraft in the airspace underlying a Class B airspace area designated for an airport or in a VFR corridor designated through such a Class B airspace area, at an indicated airspeed of more than 200 knots #source #far