What is the procedure for turbojets operating below required individual coordination?

The procedure for turbojets operating below required individual coordination includes the necessity of providing advance notification to other sectors. This requirement exists because when turbojet aircraft operate below standard coordination parameters, there is an increased risk of conflicts and the potential for safety issues. By informing adjacent sectors in advance, controllers can ensure that all relevant parties are aware of the situation and can adjust their operations accordingly to maintain safe separation and manage airspace more effectively. This proactive communication helps to mitigate risks associated with altitude discrepancies and ensures that air traffic flows smoothly, addressing any potential conflicts before they arise.

The other options do not adequately address the complexity of managing air traffic for turbojets operating under these conditions. Standard communication alone may not provide the necessary oversight to ensure safety, while operating without altitude restrictions and prioritizing other aircraft do not focus on the critical need for clear and proactive coordination among controlling sectors.