This is a first-time bloomer for me, and I think it's the most impressive aerangis I've ever seen. The blooms on this are absolutely HUGE -- 2-3/4" across and the spurs 7". There is a second spike that's hard to make out, with another two buds. I don't have a good staging area for pics -- when I get the exposure right for the blooms, the rest comes out a bit dark.
Here are two sets of photos at different stages of development. Interesting how the petals don't always form the same way, or in the same orientation.