What a tail number is and where to find it

A tail number (also called a registration number or N-number in the United States) is a unique identifier painted on the tail fin of an aircraft. It works like a license plate for planes. In the U.S., all tail numbers begin with the letter N followed by up to five characters — numbers, letters, or both. For example, N12345 or N1AB.

If you are looking at a plane, the tail number is usually visible on the vertical stabilizer (the tall fin at the back). On smaller aircraft it may also appear on the fuselage or wings. From the ground or from another aircraft, the tail number is often the easiest way to identify a specific plane.

Different countries use different formats. Canada uses C-prefix numbers, the United Kingdom uses G-prefix, and so on. The first letter tells you the country of registration. If you know the tail number but not the country, that first letter is your starting point.

Key Takeaways

  • U.S. tail numbers start with N and are followed by up to five characters; they are the primary way to identify a specific aircraft in FAA records.
  • The FAA's public aircraft registry at registry.faa.gov lets you search by tail number and returns owner information, aircraft type, and registration status.
  • International aircraft can be searched through ICAO databases or the aviation authority of the country whose prefix the tail number carries.
  • Tail number searches return public registration data only; detailed flight history or real-time location requires different tools and may have access restrictions.

Searching the FAA aircraft registry by tail number

The Federal Aviation Administration (FAA) maintains a public database of all registered aircraft in the United States. You can search it free at registry.faa.gov. Enter the tail number (with or without the N prefix) and the database returns the aircraft type, manufacturer, year built, current owner name and address, and registration status.

The search is straightforward: go to the registry homepage, select "N-Number Inquiry," type the tail number, and submit. Results appear in seconds. The information shown is public record and includes whether the aircraft is currently registered, has been deregistered, or is in a special status (such as reserved or pending).

This registry is the authoritative source for U.S. aircraft. If you are trying to identify a plane you saw or to verify ownership, this is where to start. The data is updated regularly but may lag by a few days if a registration change was very recent.

What information the FAA registry shows and does not show

The FAA registry displays the registered owner's name and address, the aircraft's make and model, serial number, year of manufacture, engine type, and whether it is currently active. It also shows the date the aircraft was registered and any special designations (such as whether it is a commercial or private aircraft).

The registry does not show real-time location, flight history, or who is currently operating the aircraft on any given day. It does not show maintenance records, accident history, or whether the aircraft is currently airborne. For that information, you would need to use flight-tracking services (which pull data from radar and aircraft transponders), contact the owner directly, or file a Freedom of Information Act (FOIA) request with the FAA for specific flight records.

If the tail number is not found in the registry, the aircraft may be foreign-registered, recently deregistered, or the number may have been entered incorrectly. Double-check the spelling and try again, or search using the aircraft's serial number if you have it.

Searching for international aircraft by tail number

Aircraft registered outside the United States use different prefixes and are registered with their own national aviation authorities. A plane with a tail number beginning with G is registered in the United Kingdom and can be searched through the Civil Aviation Authority (CAA) registry. A C-prefix aircraft is Canadian and searchable through Transport Canada. Each country maintains its own public registry.

The International Civil Aviation Organization (ICAO) does not maintain a single searchable database, but it publishes standards for aircraft identification. If you know the country prefix, you can search that country's aviation authority directly. Most European countries, Canada, Australia, and other major aviation nations publish their registries online and allow free public searches.

Some countries restrict access to owner information for privacy or security reasons, even though the tail number itself is public. If you cannot find a result through the national registry, contact the aviation authority of that country directly to ask what information is available to the public.

Using tail numbers to track flight history and real-time location

The FAA registry tells you who owns the aircraft, but not where it is or where it has been. To see real-time location or recent flight history, you need a flight-tracking service. Services like FlightRadar24, FlightAware, and ADS-B Exchange track aircraft using radar data and signals from the aircraft's transponder. You can enter a tail number into these services and see the aircraft's current position (if airborne), recent flights, altitude, and speed.

These services are free for basic searches but may charge for historical data or advanced features. The data comes from public radar feeds and does not include information the aircraft is not broadcasting. Some aircraft, particularly military or government planes, may not appear on these services or may have limited information available.

If you need detailed flight records for a specific aircraft over a long period, you can file a FOIA request with the FAA. This process takes weeks or months and may result in redactions for privacy or security reasons, but it is the official way to obtain complete flight data from government records.

Common reasons to search by tail number

People search by tail number for many reasons. Aircraft enthusiasts and spotters use tail numbers to log planes they have seen and to track specific aircraft they are interested in. Researchers and journalists use tail numbers to investigate aircraft ownership, particularly when trying to determine who operates a plane that may be involved in a story. Insurance companies and aviation professionals use tail numbers to verify aircraft registration and history.

Buyers and sellers of aircraft use tail numbers to pull registration and maintenance records as part of due diligence. Neighbors near an airport may search by tail number to identify planes flying overhead regularly. Aviation accident investigators use tail numbers to locate the aircraft involved in an incident and to pull its history from the registry.

In all these cases, the tail number is the fastest and most reliable way to find the aircraft in official records. It is more specific than a description and works across all databases and jurisdictions.

Frequently Asked Questions

Can I find out who owns an aircraft if I only have the tail number?

Yes. The FAA registry at registry.faa.gov shows the registered owner's name and address for U.S. aircraft. For international aircraft, search the aviation authority of the country indicated by the tail number prefix. This information is public record.

What if the tail number I searched does not appear in the FAA registry?

The aircraft may be foreign-registered, recently deregistered, or the number may be incorrect. Verify the spelling and try again. If it is a foreign aircraft, identify the country by the prefix letter and search that country's aviation authority instead. If the number is still not found, contact the FAA directly.

Can I use a tail number to see where a plane is right now?

The FAA registry does not show real-time location. Use flight-tracking services like FlightRadar24 or FlightAware, which display current position and altitude for aircraft that are airborne and broadcasting their location. Enter the tail number and the service will show the flight if it is currently active.

Do all aircraft have tail numbers?

All aircraft registered for flight have tail numbers. Ultralights, experimental aircraft, and some older planes may have different registration systems depending on the country and the aircraft's classification. In the U.S., any aircraft that flies must be registered with the FAA and assigned an N-number.

Is the tail number the same as the aircraft serial number?

No. The tail number is the registration number assigned by the aviation authority and is unique to that country's registry. The serial number is assigned by the manufacturer and identifies the specific aircraft built. Both appear in the FAA registry, but they are different identifiers.