Which of the following is NOT supported by the FAA as an incentive?

The correct answer highlights an aspect that the FAA does not support as an incentive. Specifically, incentives that result in less frequency of flights are not aligned with the FAA's goals of encouraging robust air service. The FAA typically supports incentives that enhance air travel accessibility and increased service frequency, which helps to stimulate demand, improve competition, and promote economic growth in aviation markets.

In contrast, the other options listed reflect types of support or incentives that can potentially benefit airports and airlines. Free marketing services can help airlines promote their routes, enhancing visibility and increasing passenger numbers. Consulting fees for strategy analysis can assist airports and airlines in developing effective operations and growth strategies. Direct payments to airlines can be a way to encourage service to underserved markets, thereby increasing frequency and improving connectivity. Each of these aligns with the FAA’s objectives of fostering an efficient air travel environment and does not contradict their mission.