All assets were grounded for a short time.
Maybe they were eliminating the fuel supply as a cause?
Good call - when operating in Spain many moons ago one of our 205's stopped in the hover just after liftoff from hot re-fueling.
Apparently the guy in the tanker was dipping the tanks a few days before and it started to rain. Rather than get wet he jumped off the top of the tank and left the top of the tank open!!
We drained about 200 litres of water out of the 205 and it was hard to get all the water out.