N9BU is reserved. Fee-paid reservation held by Short-N-Numbers — if it isn't renewed, the FAA releases it on Aug 24, 2027 (in about 14 months).
Reserved by an individual or company for $10 per year.
Reservations lapse more often than you'd think. Check back around Aug 24, 2027 — if the holder doesn't renew, it becomes available. See everything scheduled to free up in August 2027.
Tails one nudge away from N9BU that aren't assigned or reserved: