2.7 TFRs and NOTAMs
Key Takeaways
- TFRs temporarily restrict flight for VIP travel, disasters, security, and major events.
- Stadium TFRs (14 CFR 91.145): 3 NM radius, surface to 3,000 ft AGL, 1 hour before to 1 hour after.
- Stadium TFRs apply to venues seating 30,000+ during MLB, NFL, NCAA Division I, or major motor-speedway events.
- NOTAMs (Notices to Air Missions) carry temporary changes not yet on charts; check them before every flight.
- TFR violations can bring certificate action, civil fines exceeding $50,000, and criminal prosecution.
Temporary Flight Restrictions and NOTAMs
Temporary Flight Restrictions (TFRs) and Notices to Air Missions (NOTAMs) are mandatory preflight checks for every Remote PIC. A TFR can appear with little notice and turn a legal site into a federal violation, so checking them is part of every flight, every time.
Temporary Flight Restrictions
A TFR closes or restricts a defined volume of airspace for a set period, issued by the FAA and distributed through the NOTAM system. Common triggers:
| Type | Trigger | Typical size | Duration |
|---|---|---|---|
| VIP / Presidential (91.141) | President, VP, dignitary travel | 30 NM inner + 30 NM outer ring | Length of the visit |
| Disaster / hazard (91.137) | Wildfire, flood, chemical spill | ~3-5 NM | Until the hazard clears |
| Sporting event (91.145) | Major-league games at large venues | 3 NM, surface-3,000 ft AGL | 1 hr before to 1 hr after |
| Space operations | Rocket launch or reentry | Large, variable | Launch window |
| Security / special (99.7) | Sensitive sites | Variable | As specified |
The Stadium TFR (14 CFR 91.145)
The stadium TFR is the most exam-relevant for drone pilots because it routinely catches photographers near games:
- Applies to stadiums seating 30,000 or more during Major League Baseball, National Football League, NCAA Division I football, or major motor-speedway events.
- 3 nautical mile radius around the venue.
- Surface up to and including 3,000 ft AGL.
- Active from 1 hour before the scheduled start until 1 hour after the event ends.
- The FAA's Sporting Event Automated Monitoring System (SEAMS) publishes near-real-time active dates, locations, and times so pilots can verify a venue's status.
For the exam: memorize the trio — 3 NM radius, surface to 3,000 ft AGL, one hour before to one hour after a qualifying event at a 30,000+ seat venue.
Notices to Air Missions
A NOTAM is a time-critical notice of temporary changes not yet on charts. Categories relevant to UAS work:
- TFR NOTAMs — the restrictions above.
- FDC (Flight Data Center) NOTAMs — regulatory items and chart amendments.
- D (Distant) NOTAMs — navaid, lighting, or airport facility changes.
- UAS-specific NOTAMs — published drone operations, tests, or restrictions.
Where to Check
| Source | What it provides |
|---|---|
| FAA NOTAM Search (notams.aim.faa.gov) | Official NOTAM and TFR text |
| tfr.faa.gov | TFR list with graphical maps |
| B4UFLY (via Aloft) | Mobile airspace and TFR check for your location |
| LAANC apps | Cross-check TFRs during the authorization step |
| 1800wxbrief.com | Standard briefing including NOTAMs |
Reading a TFR NOTAM
A stadium or VIP TFR NOTAM names the regulatory section (e.g., 91.145), the effective window in UTC/Zulu time, the center point and radius, and the floor and ceiling. Watch the Zulu conversion: 2200Z in summer is 6 p.m. Eastern Daylight Time (UTC minus 4) or 3 p.m. Pacific. A pilot who reads the local clock instead of converting from Zulu can blunder into an active restriction.
Penalties
TFR violations are among the most serious enforcement triggers in the rule set:
- Certificate suspension or revocation of the remote pilot certificate.
- Civil fines exceeding $50,000 per violation.
- Criminal prosecution, especially for security-related TFRs.
- Possible interception by law-enforcement or security aircraft.
Bottom line: TFR information is free and takes minutes to check. There is no acceptable excuse for a violation, so build the NOTAM/TFR check into your mandatory preflight routine for every single flight.
Common Traps
- Assuming a stadium TFR is active all day — it begins only one hour before the event.
- Reading NOTAM times in local clock rather than converting from Zulu.
- Believing a disaster TFR is optional; flying into wildfire airspace grounds firefighting aircraft and is heavily prosecuted.
Disaster and Wildfire TFRs Deserve Special Respect
Of all the TFR types, the disaster and hazard TFR issued under 14 CFR 91.137 is the one most likely to put a drone pilot in the news for the wrong reasons. When wildfires burn, the FAA closes the airspace so aerial tankers and helicopters can drop water and retardant safely; a single rogue drone forces those aircraft to land, which can let a fire spread and endanger lives. The mantra repeated across aviation safety material is blunt: "If you fly, we can't." These TFRs can appear within minutes of an incident and may not be on any chart, which is precisely why a same-day NOTAM check is non-negotiable.
Flying a drone into active firefighting airspace draws aggressive enforcement and significant fines.
Presidential TFRs and Their Nested Rings
The VIP TFR under 14 CFR 91.141 deserves attention because of its size and structure. It is built as nested rings: a tight inner core (often 10 NM) where essentially no operations are allowed, surrounded by a larger outer ring (often out to 30 NM) with more permissive but still restricted rules. The center point moves with the protected official, so a TFR that was inactive yesterday can be active today over your normal job site. Because drones are explicitly named in these restrictions and the security stakes are high, a VIP TFR violation is among the most likely to trigger criminal referral rather than a simple civil penalty.
Worked Scenario
You checked the chart last week and the site was clear Class G. Today you skip the NOTAM check and launch — unaware that a wildfire two miles away triggered a 91.137 TFR overnight. You are now operating illegally inside a hazard TFR, you may interfere with firefighting aircraft, and you face fines and possible certificate action even though your launch point did not change. The scenario underscores why the NOTAM and TFR check is tied to the day and time of flight, not to the last time you reviewed the chart.
A stadium TFR under 14 CFR 91.145 restricts flight within:
Before every Part 107 flight, the Remote PIC must:
A NOTAM lists an effective window ending at 2200Z. During U.S. Eastern Daylight Time, that corresponds to: