Why did the FAA ground all flights until 9 am?

The FAA system that is meant to distribute notices to pilots on hazards failed at about 2 a.m. Eastern Time, officials said. The FAA ordered airlines to put a halt on all domestic departures until 9 a.m. Eastern time while it tested whether crews had managed to restore the system and bring it back online.



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Night flight restrictions There are two time periods: 23:00 - 07:00 and 23:30 - 06:00 both with restrictions on certain types of aircraft; The more restrictive period (23:30 - 06:00) is known as the Night Quota Period (NQP) and has limits on the number of movements which are set by the DfT.

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Many airports around the world enforce night curfews to limit noise pollution. Whilst there are a fair few red-eye flights in the US, you might have noticed that it's not always possible to book late-night flights in some countries. That's because of airport curfews.

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The most common reason for an aborted approach or landing is insufficient visibility due to rain, snow, fog, or low clouds. Here are some other reasons (my experience): The airplane was not stabilized at 1,000 feet above the runway.

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Takeoff and landing speeds are much slower, typically between 130-180 mph, depending on the aircraft and weather conditions. The landing speed of a commercial airliner can be around 160-180 mph, while the takeoff speed can be around 130-160 mph.

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“Making up lost time can be tough for pilots, as we can only theoretically fly at certain maximum speeds.” While the plane may be able to go slightly faster, additional fuel burn has to be taken into consideration—and in many cases, it's not worth it to the airline's bottom line.

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#1. London Heathrow - Santiago (BA250/251)
  • Direct distance: 11,632 km (7,228 miles)
  • Average duration outbound: 13 hours and 51 minutes.
  • Average flight duration inbound: 13 hours and 16 minutes.
  • Aircraft type currently used: Boeing 787-9.


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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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The Loganair Westray to Papa Westray route is the shortest scheduled passenger flight in the world. Flights on the route are scheduled for one and a half minutes, and actual flying time is closer to one minute. The record for the fastest flight is 53 seconds.

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One possible reason is the presence of noise restrictions at many airports during nighttime hours. To minimize disturbances for nearby residential areas, airports impose regulations on noise levels, making it challenging to operate flights during late-night hours.

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