When does K5UO become available?

Currently held

K5UO is held by an active license; it isn't a vanity slot right now.

Last held by BRAGASSA, MICHAEL H (MI).

Vanity availability dates are computed from FCC §97.19's hold periods: 2 years from the cancellation date for cancelled or terminated licenses, 4 years from the expiration date for expired licenses (2-year renewal grace + 2-year hold).