In Den Helder (NL), CHC Helicopters Netherlands is operating 4 AW139 in the offshore fit. So is CHC Scotia, operating 3 AW139 from North Denes (UK).
Rumour goes that two of the Dutch machines are the world leaders in the amount of flight hours. The 4 machines in Den Helder are close to 8000 flight hours together.
We are also looking forward at the 6800 kg upgrade. And yes there are some issues, and some are taking too long to solve.