As an expert builder using the grace that God gave me, I laid the foundation, and someone else is building on it. But each person must be careful how he builds on it. According to the grace of God given to me, like a skilled master-builder I laid a foundation, but someone else builds on it.
The most-advanced helicopters can fly up to 300 miles before having to refuel. How long any particular helicopter can fly without refueling depends on the size, weight and age of the helicopter.
H155 (EC155 B1) - 324km/h. The H155 (formerly EC155 B1) helicopter from Airbus Helicopters has a maximum speed (VNE) of 324km/h and can fly at a fast cruise speed of 278km/h at an altitude of at 6,000ft. Efficient lift and the high top speed are attributed to its high efficiency profile.