Tumbling Iridiums

This came up a few weeks ago while I was travelling - so here goes.
Just to confirm which ones show irregular flashes while tumbling,
I leafed through my notbook section on Iridium observations.
I've seen these flashes from numbers 2, 18, 21, 27, 79, and 85.
I think the 21 in my notes is now 921, since its replacement
is said to be well-behaved.

Numbers 27, 79 and 85 have decayed since these observations.
I have found the others listed at
http://www.wingar.demon.co.uk/satevo/tle/iridstat.txt
but not recorded flashes, maybe that will give me an excuse
to watch for more passes.

Bill Keel