In what order should altitudes be assigned according to the regulations?

Assigning altitudes in aviation is primarily based on what the pilot requests. This standard practice ensures that pilots have a crucial role in managing their flight profiles, as they are most familiar with their specific operational needs and those of their aircraft. Allowing pilots to request their desired altitudes helps with flight planning, efficiency, and comfort.

While air traffic control does have the discretion to assign altitudes, their choices are often guided by the requests made by pilots to ensure safety and efficient traffic flow. The experience level of the pilot and the type of aircraft may influence the decision-making process, but the fundamental regulation emphasizes the pilot's input as the most relevant factor. Thus, prioritizing pilot-requested altitudes aligns with regulations and promotes a safe and efficient airspace management system.