On Sun, 6 Oct 2013, Henry Vanderbilt wrote: > I hadn't known about the specific limit on Merlin starter cartridges > though. A quick search didn't turn anything up. Any idea where to find > out more about that? Don't remember where I saw it discussed, alas, and a quick search doesn't find anything... The Falcon 9 User's Manual (rev 1, 2009) credits the second stage with "2 restarts" capability, which might have been what I was remembering (although the most plausible reading of that wording would give it a total of 3 starts, not 2). Henry Spencer henry@xxxxxxxxxxxxxxx (hspencer@xxxxxxxxxxxxx) (regexpguy@xxxxxxxxx)