Frequently Asked Questions

You need to pursue FAA deregistration when your aircraft is no longer eligible, active, or required to remain on the FAA aircraft registry. This applies when your aircraft is sold abroad, destroyed, retired, or ownership changes, requiring removal from the FAA registry.

An N-number is the registration number for an aircraft registered in the United States.
It's a unique identifier assigned by the Federal Aviation Administration (FAA). The "N" stands for "National" and is followed by a combination of numbers and letters.

Airplane tail numbers are essentially the unique identification codes assigned to aircraft. They are similar to license plates for cars.


Purpose: They are used to identify specific aircraft for air traffic control, regulatory purposes, and for tracking ownership and maintenance records.
Location: Typically displayed on the tail of the aircraft, but can also be found on the fuselage.
Format: Varies by country, but generally consists of a combination of letters and numbers.

The "N" in US tail numbers stands for "National".

It was assigned to the United States under the International Air Navigation Convention held in 1919. This convention established a system of international aircraft identification, with each country being allocated a specific letter.

N-numbers, the registration numbers for U.S. aircraft, adhere to specific guidelines:


Format: Consists of the letter "N" followed by one to five alphanumeric characters.
Numeric Start: The initial character must be a number (excluding zero).
Character Limit: The total number of characters (excluding the "N") cannot exceed five.
Letter Placement: Letters can be placed at the end of the number, with a maximum of two letters.
Reserved Numbers: N1 to N99 are reserved for FAA use.
Obsolete Prefixes: NC, NX, NR, and NL are no longer issued.

An Aircraft Security Agreement is a legal document that establishes a security interest in an aircraft. This means that the aircraft is used as collateral to secure a loan or other financial obligation.

In the United States, aircraft registration is now valid for seven years.

This means that if you registered your aircraft after January 23, 2023, you won't need to renew it until seven years from the date of initial registration.

If your aircraft registration expired before January 23, 2023, it was valid for three years.

An Airworthiness Certificate is an official document issued by a civil aviation authority that certifies an aircraft is in airworthy condition. This means it meets the required safety standards for flight.

Essentially, it's like a driver's license for an aircraft. Without a valid Airworthiness Certificate, an aircraft cannot legally fly.

American Citizens and Foreign Country Citizens Lawfully Admitted for US Permanent Residence

United States citizens can register an aircraft, as can individual citizens of foreign countries who have been lawfully admitted for permanent residence in America. 

Additionally, a corporation can register an aircraft if the corporation is organized and doing business under American laws or in a State within America, provided that the aircraft is both primarily used in America or based in the country. 

Use the following link for FAA registration. 

An aircraft abstract is typically a concise summary of an aircraft's technical data and specifications. It provides essential information about the aircraft's design, performance, and capabilities.

No, you may not operate a U.S.-registered aircraft in the U.S. unless you possess a U.S. pilot license (certificate).

You can record a security agreement against an aircraft by filling out our Aircraft Security Agreement form.

Processing time is generally 12 to 16 weeks after documents are received. In compliance with statutory requirements, documents are processed in the order in which they are received.

An aircraft is eligible for U.S. Registration if it is not registered in another country and it is owned by:

An individual who is a United States citizen,
A partnership each of whose partners is an individual who is a U.S. citizen,
A corporation or association:
organized under the laws of the U.S. or a State, the District of Columbia, or a U.S. territory or possession,
of which the president and at least two-thirds of the board of directors and other managing officers are U.S citizens, and
in which at least 75% of the voting interest is owned or controlled by persons that are U.S. citizens,
An individual citizen of a foreign country lawfully admitted for permanent residence in the U.S.,
A U.S. governmental unit or subdivision
A non-U.S. citizen corporation organized and doing business under the laws of the U.S. or one of the States as long as the aircraft is based and primarily used in the U.S. (60% of all flight hours must be from flights starting and ending within the U.S.)

If you are registering an aircraft for the first time, you will need to submit a form for Initial Registration.

General aviation aircraft are aircraft operated under 14 CFR part 91 rules, which could be any category of airplane, including transport category and rotorcraft.  Additionally, airplanes operated under 14 CFR parts121 and 135, which may include small airplanes, are not considered General Aviation aircraft when operated under these rules.

The regulations do not consider physical cleaning of an aircraft as maintenance or preventative maintenance.  However, when preparing the aircraft for cleaning requires removal of components or protection of components, that may fall under the definition of maintenance or preventative maintenance.  For example, before cleaning an aircraft, it may be necessary to close and secure the upper and lower fan cowl doors on a transport category aircraft.  The FAA considers the closing and securing of the engine fan cowl doors maintenance.  Additionally, after the cleaning process, it may be necessary to reapply lubrication compounds and preservatives to aircraft components, both of which could be considered maintenance/preventative maintenance.  Conversely, we do not consider cleaning seat cushions/covers maintenance or preventative maintenance.

14 CFR part 1 defines a small aircraft as an aircraft of 12,500 lbs or less maximum certificated take-off weight.  Therefore, any airplane, including transport category airplanes, could be considered small by the Part 1 definition if the airplane is less than 12,500 lbs.

You may contact your nearest FAA Aircraft Certification Office with questions about airworthiness of an aircraft.

You can record an aircraft claim of lien by filling out our Claim of Lien form.