N100U is reserved. Fee-paid reservation held by William R Cook Jr — if it isn't renewed, the FAA releases it on Apr 11, 2027 (in about 9 months).
Reserved by an individual or company for $10 per year.
Reservations lapse more often than you'd think. Check back around Apr 11, 2027 — if the holder doesn't renew, it becomes available. See everything scheduled to free up in April 2027.
N100U has been worn before. Past registrations from FAA deregistration records:
Tails one nudge away from N100U that aren't assigned or reserved: