On 2004-08-15, Andrew Gray wrote:

So eleven, plus a couple of bits and pieces on other flights. Call it an
even dozen, maybe, out of the 24 manifested flights? I doubt you could
compress it further, although the fact that the SPP has about as much
chance of making it to the station as I do probably could shave a fight
off that number.

I missed STS-133 (UF7) which seems to be scheduled to take the
centrifuge, although it isn't noted as an assembly flight.

--
-Andrew Gray