Air Traffic PatternTo sustain a safe separation from airplanes, air traffic controllers usually direct helicopters to fly lower than airplanes and move along a traffic pattern that is opposite to that of the airplanes.
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Any time the temperature and dew point are within 4 degrees of each other, extra caution is utilized. Snow is another threat to helicopter air ambulance flights. While light snow generally is not an issue on most aircraft, heavy snow causes no-fly conditions.
The ICAO phonetic alphabet has assigned the 26 code words to the 26 letters of the English alphabet in alphabetical order: Alfa, Bravo, Charlie, Delta, Echo, Foxtrot, Golf, Hotel, India, Juliett, Kilo, Lima, Mike, November, Oscar, Papa, Quebec, Romeo, Sierra, Tango, Uniform, Victor, Whiskey, X-ray, Yankee, Zulu.
In case of emergencies, yes. The pilot in command has the final authority and responsibility for safety of the flight and can disobey ATC commands in case of emergencies. The reasons for that and the results will decide the consequences.
Helicopter pilots see at night by using Night Vision Goggles or NVGs. Night vision goggles for heli pilots are designed explicitly for night flights at the lowest light levels. Their use does not require any modernization of the helicopter's cockpit. Also, the NVGs comply with different types of helmets.
At night pilots will turn their gaze from outside to inside and use the artificial horizon. The artificial horizon is normally a simply globe split into two hemispheres. Using this instrument, the pilot can determine whether the aircraft is in a climb, a dive, or rolling.
Can helicopters fly in the rain? Yes!Helicopters can fly in the rain and tours are generally not cancelled simply because it is raining. However, fog and limited visibility may cause weather related delays or cancellations.