My Renton visit also allowed me to have a look around the production aircraft out on the flight line or in the factory areas.  The shortage of engines has been a concern which I wrote about last year and which was supposed to be fixed by the year end.  Judging by how many of these planes are still carrying ballast rather than engines, I guess things are still a bit behind schedule.  Then again, with what has happened since, maybe the cost of accepting some engines is not something Boeing wants…