At a site the FAA set up for the event, complete with a GeoCities-era animated reflective logo and a "fly2sb50" url, people can find information about where not to fly. The "Notices to Airmen" specify that flights up to 17,999 feet and within a 32 nautical mile radius (or 37 statute miles) of Levi's Stadium are off-limits for aircraft from 2pm to midnight on February 7th, the day of the game. There's also an inner core with an 11.5-mile radius from the stadium where the FAA has particularly advised against flying. These notices are subject to change as the event gets closer.