N40AX is reserved. Fee-paid reservation held by William R Cook Jr — if it isn't renewed, the FAA releases it on May 27, 2027 (in about 11 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 May 27, 2027 — if the holder doesn't renew, it becomes available. See everything scheduled to free up in May 2027.
N40AX has been worn before. Past registrations from FAA deregistration records:
Tails one nudge away from N40AX that aren't assigned or reserved: