8.registration-and-radio-station-license. Aircraft Registration and Radio Station License
Every U.S. civil aircraft must be registered with the FAA, and certain aircraft operating internationally or carrying specific equipment must also hold an FCC Radio Station License. These documents are part of the required papers that must be aboard the aircraft (or, in some cases, available to the pilot) before flight. Pilots commonly remember the required documents with the mnemonic ARROW: Airworthiness Certificate, Registration Certificate, Radio Station License (when required), Operating Limitations (POH/AFM, placards, markings), and Weight and Balance data.
Aircraft Registration
Under 14 CFR Part 47, an aircraft may be registered only by its owner, and only if it is not registered under the laws of a foreign country. The owner applies on AC Form 8050-1, Aircraft Registration Application, and submits evidence of ownership (typically AC Form 8050-2, Aircraft Bill of Sale) and the registration fee to the FAA Aircraft Registry in Oklahoma City.
Key points:
- Eligible owners include U.S. citizens, resident aliens, U.S. governmental units, and U.S.-organized corporations meeting citizenship tests.
- The pink copy of AC Form 8050-1 serves as temporary authority to operate the aircraft within the United States while the permanent Certificate of Aircraft Registration (AC Form 8050-3) is being issued. The pink copy is valid for up to 90 days, and for international flight only with proper authorization.
- Once issued, the permanent Registration Certificate must be carried in the aircraft at all times during operation.
- Effective with the registration re-registration program, certificates of registration must be renewed every 7 years. The FAA mails a renewal notice approximately 6 months before expiration.
- The registration becomes invalid when: ownership is transferred, the aircraft is destroyed or scrapped, the owner loses U.S. citizenship, the certificate expires, or the aircraft is registered under foreign law. The owner must notify the Registry in writing within these events.
- The N-number (registration mark) issued with the certificate must be displayed on the aircraft per Part 45.
An aircraft may not be flown unless its registration is current and the certificate is on board. Operating with an expired registration is a violation of 14 CFR 91.203, which requires both the airworthiness certificate and the registration certificate to be aboard.
Radio Station License
The FCC Radio Station License (FCC Form 605) is issued by the Federal Communications Commission, not the FAA. Historically every aircraft with a radio transmitter required one, but rules were relaxed in the 1990s.
A Radio Station License is not required for aircraft operated solely within the United States that carry only VHF communication radios, transponders, ELTs, DME, and similar standard avionics.
A Radio Station License is required when:
- The aircraft is flown in international airspace or to/from a foreign country.
- The aircraft carries certain types of radio equipment such as HF transceivers or satellite communications.
- Operating outside U.S. territorial airspace where ITU (International Telecommunication Union) rules apply.
When required, the license is good for 10 years and must be either posted in the aircraft or, for portable stations, kept with the station records. The aircraft is assigned a call sign, which is normally the N-number prefixed by the type of station (for example, "November One Two Three Four Alpha"). For flights inside the United States only, pilots simply use the N-number as the call sign without an FCC license.
Along with the aircraft station license, the Restricted Radiotelephone Operator Permit (RR) is required for the pilot in command on international flights. This is a one-time, lifetime permit issued by the FCC.
Recordkeeping and Practical Considerations
During preflight, pilots should verify:
- The Certificate of Registration is on board, legible, and not expired.
- The N-number on the certificate matches the N-number on the aircraft and the airworthiness certificate.
- The owner's name and address on the certificate are current — sale of the aircraft or a change of address requires submitting an updated application within 30 days.
- If international flight is planned, the FCC Radio Station License is on board and unexpired, and the pilot holds a Restricted Radiotelephone Operator Permit.
A missing, expired, or improperly displayed registration grounds the aircraft until corrected. Because the FAA Registry processes documents by mail, pilots and owners are advised to apply for renewals well in advance — operations after expiration are not authorized even if the renewal is in the mail. The Registry maintains an online database where owners can verify status, view N-number availability, and reserve special registration marks for an additional fee.
In summary, the Registration Certificate is the aircraft's legal identity document; the FCC Radio Station License is its passport for international communication. Both, when required, ride with the aircraft and are checked as part of the pilot's normal preflight routine.