What altitude transition range is specified for the Foxtrot working High Block?

The specified altitude transition range for the Foxtrot working High Block is 12,000' - 12,999' MSL. This range is critical for aircraft operations as it defines the vertical space that pilots and air traffic controllers use to maintain safe separation of aircraft. Within this altitude range, particular operational restrictions and requirements come into play, ensuring safe navigation and communication among aircraft operating in high-density airspace.

Knowing the correct altitude blocks is essential for pilots and air traffic control personnel to effectively communicate and coordinate their activities, especially in busy airspaces where altitude management is vital for safety. The other altitude ranges listed do not align with the specific operational norms for the Foxtrot working High Block, which emphasizes the need for correctly identifying and adhering to published guidelines for different operations.