The CWL-SFB flight is normally operated weekly by A330, direct. A/C positions in from MAN, Once the CWL-SFB-CWL flights are done, the a/c then goes off to NCL to operate their long haul flights.
A330 was tech Thurs, so A300 replaced via YQX.
The crew are positioned to CWL the night before, but due to A300 operating, extra A300 pilots were positioned to CWL in early hours.