F-BTSD has flown into Orly Airport and not back to CDG.
Sources suggest this is for a paint job after her recently completed "D" check. After being painted she wil return to CDG where the modificatiosn will be carried out at the main AF technical base.
Although there many be no rush for this and AF may store her inside at orly unt il her time to be modified comes around as F-BVFB will be modified first. The tempoary flight certificate runs out on 10th May.
This yet another sign that Air France are committed to Concorde ops.