N300ZK is reserved. Fee-paid reservation held by Flight Level 500 Inc — if it isn't renewed, the FAA releases it on Feb 28, 2027 (in about 8 months).
Reserved by an individual or company for $10 per year.
Reservations lapse more often than you'd think. Check back around Feb 28, 2027 — if the holder doesn't renew, it becomes available. See everything scheduled to free up in February 2027.
Tails one nudge away from N300ZK that aren't assigned or reserved: