Can you exceed 250 knots below 10,000 feet when advised by ATC to use best forward speed?

Exceeding 250 knots below 10,000 feet is generally prohibited under standard regulations, regardless of ATC instructions. The regulation is in place mainly for safety reasons, aimed at minimizing the risk of mid-air collisions and ensuring controlled and predictable air traffic flow in busy airspace. Even if ATC advises pilots to use best forward speed, pilots must adhere to established speed limits unless specific exceptions apply, such as in an emergency or certain operational scenarios that are strictly governed by additional regulations.

The other options suggest varying degrees of flexibility or exceptional circumstances regarding compliance with the regulation, but none of these align with the standing rules governing airspeed limitations below 10,000 feet. Thus, maintaining adherence to the regulation is essential for safety and compliance.