C-GDTD - Canadair Challenger 850 (CRJ-200ER) - Flightexec at Toronto Lester B. Pearson Airport (YYZ) A growing number of former regional passenger jets is now being converted to bizjets, but this one is an 2006 originally-built 15-seat executive jet. The Challenger 850 is a CRJ-200/ER in executive configuration "We are flying with an Angel" written on the tail - what is the meaning of this?