Interestingly what this does say is that BA were able to get B747-400's and flying them almost within a year of the first one taking flight with Northwest Airlines in February 1989.
Therefore is is not surprising this particular aircraft is being stored.
Anyone else find it really odd to see Delta 747-400's (the ex-Northwest ones)?
Watching the apron from the Delta Skyroom in Atlanta last week, there was one very smokey Delta 747-400 heading for Narita (I think).
Quite amazing how quickly Delta have repainted them.