Can helicopters fly in heavy wind?

Although helicopters can fly when there is a relatively high surface wind (because of the high tip path speed compared to the surface wind speed), the influence of the weather certainly accounts for a large proportion of all helicopter accidents.

What wind speed is safe for helicopters?

The BK117, the helicopter we fly most, has one particular wind-related limitation: It is unsafe to start up or shut down in wind speeds over 50 knots (about 90 km/h) due to the risk of the overhead blade striking another part of the aircraft when it’s rotating at a low speed.

What weather can helicopters not fly in?

Rain, snow, sleet, and fog may not affect helicopter performance, but they generally obstruct visibility. These conditions may make take-off and landing more difficult and affect a pilot’s ability to see obstacles that are encountered during flight.

Can helicopters fly in clouds?

Helicopters can fly above the clouds as VFR Over The Top, VFR On Top, and in the clouds under IFR flight rules. When flying VFR above any cloud a pilot needs to exercise caution and ensure there is a hole to descend through at their destination.

Can helicopters fly through clouds?

What is too windy flying?

With this in mind, horizontal winds (also known as “crosswinds”) in excess of 30-35 kts (about 34-40 mph) are generally prohibitive of take-off and landing. If crosswinds are strong while the plane is at the gate, air traffic controllers maybe simply delay departure, as they would during heavy snow.

Can helicopters fly snow?

While light snow generally is not an issue on most aircraft, heavy snow causes no-fly conditions. Reduced visibility in heavy snow showers happens quickly. Helicopter Air Ambulance flights can and are completed safely and successfully in winter weather.

Can you fly a helicopter in rain?

Helicopters generally have no issues flying in rain. Rain does not affect the thrust created by the blades needed for takeoff. However, rain can impact the visibility for the pilot substantially. It is up to the pilot to determine whether or not it is safe to fly.