Why are planes louder at night?

During the day, when the air is warmer than the ground, noise energy from an airplane staying in the air, so while you can still hear it, it seems quieter. Conversely, at night, when the ground is warmer than the air, the noise is drawn down, making it seem louder.



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Inversions, which occur when the air temperature increases as altitude increases, have the same effect on noise as does cloud cover. These types of weather conditions slow the atmospheric absorption of the noise waves and may cause jet aircraft noise to sound louder.

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The reverberation of sound waves caused by weather may make noise seem louder than it actually is. Common factors responsible for this phenomenon include: variations in air temperature; wind speed and direction; humidity and precipitation.

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Often at night there is less air traffic, so you're more likely to get shortcuts, shaving sometimes 10 or 15 minutes off a flight time.

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Accident statistics from Plane and Pilot Magazine show about 10% of all aviation accidents occur at night. But accidents at night can be more likely to be fatal. Still, flying commercial during the day or night will be very safe overall due to pilot training under all lighting and weather conditions.

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Early morning or nighttime flights These red-eye flights mean you can worry less and catch up on much-needed sleep due to a smoother flight and less worrying about turbulence. This is because during the night, wind speeds are typically reduced, and also thunderstorms tend to alleviate overnight.

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Whether flying at night or during the day, pilots need to see some kind of horizon. They use this to determine the airplane's attitude. 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.

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But many of their advanced functions are only advisory in nature: Pilots still must look out the window to verify what they're telling us.

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Most commercial airplanes have a certified maximum altitude of about 40,000 to 45,000 feet. Regardless of its certified maximum altitude, if an airplane flies too high, it may fail in one or more ways. For starters, the engine may suffocate from a lack of oxygen.

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Why are toilets so loud on airplanes? The toilets are loud on airplanes because they use the pressure difference between the inside and the outside of the aircraft in order to flush them. They don't use very much water. Instead of using water and gravity, they use a partial vacuum.

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Departures tend to be louder than arrivals since the pilot is using more power to the engine to achieve lift.

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There are several alternatives for getting for blocking out sound. Earplugs are a good way to block-out unwanted noise, they're small and inexpensive. If you like soothing music, make sure you pack your earbuds and phone/iPod. Noise-canceling headphones are a great investment for quiet on board too.

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The Airbus A321 study suggests that noise levels are higher in the rear of the cabin, near and behind the engines and propellers, and near windows. When you have a choice, moving to other locations in the cabin may reduce your noise levels.

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Airline pilots take turns using the bathroom nearest the cockpit during a flight. There are no bathrooms installed in the cockpit. For airplanes with a single pilot, diapers, catheters, or collection devices are used if they are unable to land to use the airport bathroom.

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Should a windown somehow be opened in a pressurized aircraft, it would lose cabin pressure requiring a descent to a safe breathing altitude. As long as the person seating next to the window has his/her seatbelt fastened, there should be no danger. It would get cold, windy, noisy and uncomfortable.

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While pilots can't actually see turbulence, they often know what is coming up, thanks to reports from other planes, weather reports, and radar equipment. However, clear air turbulence (severe turbulence occurring in cloudless areas) can sometimes catch pilots off guard.

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No they do not. The cockpit itself is pretty small in most planes and none of them have dedicated toilets installed in them. Pilots use the same restroom as the passengers, usually the one in the front of the passenger cabin.

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Flight times within the duty periods are restricted to a maximum of 8 hours for flight crews consisting of one pilot and 10 hours for flight crews consisting of two pilots. The 8-hour and 10-hour flight time limitations include any additional commercial flying performed by the flight crew during the period.

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Daily. An airline transport pilot can fly up to 8 hours per 24 hour period and up to 10 hours if a second pilot is aboard. Pilots are required to rest a minimum of 16 hours postflight. Some variances to these regulations exist depending on the company's operations specifications.

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Currently, the bragging rights for the longest flight in the world belong to Singapore Airlines' New York City to Singapore route. Its longest flight path, which connects Singapore's Changi Airport with New York's John F. Kennedy International Airport, 9,585 miles away, takes 18 hours and 40 minutes.

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The simple answer is yes, pilots do, and are allowed to sleep during flight but there are strict rules controlling this practice. Pilots would only normally sleep on long haul flights, although sleep on short haul flights is permitted to avoid the effects of fatigue.

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Beyond delays and cancelations, early morning flights have the added perk of being less prone to turbulence.

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