Although popular with police, EMS and offshore operators in Europe and Asia since its introduction in 1999, the Airbus Helicopters (née Eurocopter) EC155 has been slow to catch on in the U.S. market. Customers panned the initial model for its unreliability and inadequate engine power. Those issues were largely addressed with an improved variant, the EC155B1, which entered production in 2002 and introduced uprated engines.
The University of Michigan Health System (UMHS) Survival Flight took delivery of three EC155B1s to replace its fleet of aging Bell 430s in 2011 and began service with them in 2012. UMHS was the first U.S. operator to use the EC155 for medevac missions. UMHS chose the EC155s for their increased speed, range and cabin room as well their ability to use the same helipads already qualified for the 430s, which the program operated for 14 years, according to Denise Landis, UMHS manager of critical care transport.