Flightglobal article from 2010:
"Rossiya says incidence of technical failure in its fleet occurred once every 344h in the An-148, every 5,355h in its Airbuses, and 2,824h in its Boeing 737s."
From (remove 2 spaces)
www.flightglobal. com/ news/articles/rossiya-slams-an-148-reliability-347983/
Also interesting to see the ~50% difference between Airbus and Boeing, could it be difference in fleet type/age or is this a general picture?