Which statement about NSAs is correct?

• A. NSAs permanently prohibit all flights.
• B. NSAs are training areas only.
• C. NSAs are defined airspace areas where there is a need for increased security and pilots are requested to avoid; NOTAMs may indicate prohibitions.
• D. NSAs are weather observation zones.

Answer: (C)

NSAs designate defined airspace areas where there is a need for heightened security, and pilots are requested to avoid them. Their status is communicated through NOTAMs, which may indicate that entry is prohibited. They are not permanent prohibitions and can be activated or deactivated as security needs change. NSAs are not training areas and they are not weather observation zones. When planning a flight, check NOTAMs and current NSA statuses; if an NSA is active and a prohibition is published, don’t enter it, and otherwise plan to route around it. If you unexpectedly encounter an NSA while flying, comply with ATC and exit the area as directed.