Under 14 CFR § 91.145, a standing TFR exists for certain sporting events at stadiums seating 30,000 or more. What is the activation window for these TFRs relative to the event?
Why →
Under § 91.145, the stadium TFR is active from one hour before the scheduled event start time through one hour after the event end time. The radius is typically 3 nautical miles and the floor is the surface up to 3,000 feet AGL. Drone operations in this airspace during the active window are prohibited without specific authorization.The trap →
Choice B under-reports the window; the buffer hours exist specifically to cover pre-event and post-event crowd activity. Choice C over-reports.SOURCE → 14 CFR § 91.145; FAA TFR referenceCHECKED APR 21ACS II.B.K3EASY