N400F is reserved. Fee-paid reservation held by Usa N Numbers — if it isn't renewed, the FAA releases it on Dec 13, 2026 (in about 5 months).
Checked against FAA data from Jul 1, 2026. Not an official FAA determination — always confirm with the FAA before filing.
Reserved by an individual or company for $10 per year.
Reservations lapse more often than you'd think. Check back around Dec 13, 2026 — if the holder doesn't renew, it becomes available. See everything scheduled to free up in December 2026.
N400F has been worn before. Past registrations from FAA deregistration records:
Tails one nudge away from N400F that aren't assigned or reserved: