Transport Minister ACM Prajin Juntong said Friday that air traffic required the management of flight frequency at airports and air traffic control.
The airspace starts to get congested, he said after a meeting with transport officials. If the situation remains this way, it might affect the quality of service and safety, he added.
Relevant departments are assigned to draft a new plan within September and the plan will be submitted to the Cabinet by the end of this year, he said.