ACA 1998-2003 timeframe had a 50% bust rate in the CRJ (aka "Space Shuttle," aka the "Pink Badge of Courage.")
World busted about 25% of their MD11 F/O's as a matter of course (because it's "the mighty MD11"

)
Safe to say, Delta training is worlds apart. The most gentlemanly and pro-line-pilot philosophy I've ever experienced.