What is the maximum holding speed for aircraft above FL140 up to and including FL200?

The correct maximum holding speed for aircraft operating in clouds between FL140 and FL200 is 240 knots. This speed limitation is in place to ensure safe and manageable aircraft operations in holding patterns, especially in busy airspace or adverse weather conditions.

The rationale behind the specified speed limits for holding patterns is to balance the need for efficient traffic management while maintaining safety. At altitudes above FL140 up to FL200, controlling airspeed at 240 knots ensures that aircraft have adequate time to maneuver and make necessary adjustments when entering or exiting the holding pattern.

In the context of other speed limitations at different flight levels, it's essential to note that these maximum speeds are designed to prevent excessive energy build-up in the aircraft and to allow for more controlled handling, particularly when flying in potentially congested airspace.