Airspace Speed Limits
| Below 10,000' MSL | 250 Knots (KIAS) | 91.117(a) |
| Within Class C or D airspace | 200 Knots (KIAS) | 91.117(b) |
| Underlying Class B airspace | 200 Knots (KIAS) | 91.117(c) |
With the caveat: If the minimum safe airspeed for any particular operation is greater than the maximum speed prescribed in this section, the aircraft may be operated at that minimum speed.