An article from SpaceToday.net and referencing a press release from the Columbia Accident Investigation Board indicates that the board is requesting NASA put together a plan to check and repair tiles while the Shuttle is on a mission.

The plan involves setting up an inspection regime for missions that are destined for the ISS (International Space Station) as well as those that are not.

They are also requesting that NASA devise a set of certified procedures for repairing shuttles while they are in orbit.

For it's part, the administration says they have been working on it "for a couple of months" and say the problem is "not insurmountable."