What exactly happened there, we cannot say for sure. But it was a fortunate accident in any case. All the people got out of the helicopter. It is not known whether they came out when the helicopter was still on the water or already upside down.
When a helicopter is upside down, it is very difficult to get out of it. Pilots train for this in Paljassaare in a special pool. There, the helicopter mock-up is turned upside down and attempts are made to get out of it. This is a separate training. Now seven people, ordinary people, got out of the machine. This is more than a miracle.
One of the reasons could have been low cloud cover. In aviation, low cloud cover and poor visibility are dangerous. Strong wind, rain, snowfall do not interfere with flying as much. Low cloud cover is more dangerous. The helicopter entered a cloud. When you enter a cloud, you instantly lose spatial awareness and fear arises.
It is not yet known whether the helicopter fell into the water or landed in the sea as a result of the pilots' conscious actions. There were two pilots in the helicopter. One of them was a certified flight instructor. His experience certainly helped to soften the situation. If a helicopter falls from a height of 150 meters, the end is usually tragic.
The helicopter did not fall at a very high speed. The people remained conscious and were able to react quickly. They had to be in very good physical and mental condition to get out quickly. They definitely helped each other. In the helicopter, it is narrow, there is panic, the straps are fastened, the doors are open, and water is coming in. Panic is very easy to happen there.
The helicopter was upside down after the accident. This is completely natural because the helicopter's center of gravity is high. Two narrow pontoons cannot keep it upright if a wave rocks the helicopter.