The Columbia Accident Investigation Board (CAIB) continues their work into the investigation of the accident and a number of hearings are now being held in public. The chairman of the NASA Columbia Task Force (the body that supports the CAIB) gave a detailed briefing a few days ago to ESA and the other International Partners on the status to date. Over 40,000 lbs of debris have been recovered, representing 20% of the total Shuttle mass. However, nothing has yet been recovered west of Texas despite the fact that there is filmed evidence that debris had fallen over California. The search for debris in this area still continues.
The Orbiter Experiments Recorder is the latest piece of important equipment to be found. This is a magnetic tape recorder that records data from various sensors during ascent and re-entry, which had not been tele-metered down to the ground. The recorder is currently at the Kennedy Space Centre and undergoing analyses.