About Tailfinder

Find Available N-Numbers, Fast

A free, open-source tool to help pilots and aviation enthusiasts discover available FAA aircraft registration numbers.

What is Tailfinder?

Tailfinder is a search engine for FAA N-Numbers - the unique registration identifiers assigned to aircraft in the United States. Similar to how domainr.com helps you find available domain names, Tailfinder helps you find available aircraft registration numbers.

Whether you're registering a new aircraft, looking for a memorable N-number, or just curious about what's available, Tailfinder makes it easy to search through hundreds of thousands of possible combinations instantly.

Features

Instant Search
Get results as you type with debounced search and real-time filtering. No waiting, no page reloads.
Comprehensive Database
Search through all possible N-number combinations: numeric, single-letter, and double-letter suffixes.
Daily Updates
FAA data is synced daily to ensure you have the most up-to-date availability information.
Privacy First
Your searches are private. We don't track or store your search history. Favorites are saved locally in your browser.
Support This Project
Tailfinder is free to use and will always remain free. If you find it useful, consider supporting the project to help cover server costs and development time.

Your support helps with:

  • Server hosting and infrastructure costs
  • Daily FAA data synchronization
  • Database maintenance and optimization
  • Future feature development
  • Keeping the service free for everyone

Important Disclaimer

Tailfinder is not affiliated with or endorsed by the Federal Aviation Administration (FAA).

This tool provides informational data based on publicly available FAA registry files. Availability information is updated daily but may not reflect real-time changes. Always verify availability directly with the FAA before reserving an N-number.

Official FAA resources:

  • N-Number Inquiry & Reservation
  • Aircraft Registry

Have questions, feedback, or feature requests?

A free tool from the makers ofWingbase

Wingbase is the simplest way to log flights, track costs, and manage aircraft partnerships.

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© 2026 Vextras, Inc. All rights reserved.

Data sourced from the FAA Aircraft Registry. Last updated daily at 11:30 PM CT.

This service is not affiliated with or endorsed by the Federal Aviation Administration (FAA). All N-number registrations must be completed through official FAA channels.