How often are planes checked?

A check. The A check is performed approximately every 400-600 flight hours, or every 200–300 flights, depending on aircraft type.



Commercial aircraft in 2026 follow a rigorous, four-tier maintenance schedule. "A-Checks" occur roughly every 400 to 600 flight hours (about every 2 months) and are light inspections done overnight. "B-Checks" are more thorough and happen every 6 to 8 months. The more intensive "C-Check" happens every 18 to 24 months, involving a deep inspection where much of the plane is disassembled. Finally, the "D-Check" (the "Heavy Maintenance Visit") is the most comprehensive, occurring every 6 to 12 years. During a D-Check, the entire aircraft is stripped to the metal, engines are removed, and every inch of the airframe is X-rayed for stress fractures. Beyond these, "Line Maintenance" checks are performed by technicians before every single flight, involving a visual walk-around and a review of the cockpit's digital health logs to ensure the aircraft is airworthy before the wheels leave the tarmac.

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Pilots are supposed to do a preflight inspection of the aircraft before each and every flight. For the most part, all pilots adhere to this. Especially, for the first flight of the day. An abbreviated inspection can be done for subsequent flights that same day called a through-flight inspection.

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Turbulence is a sudden and sometimes violent shift in airflow. Those irregular motions in the atmosphere create air currents that can cause passengers on an airplane to experience annoying bumps during a flight, or it can be severe enough to throw an airplane out of control. (The pilots) aren't scared at all.

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Severe turbulence can cause a plane to drop so suddenly that pilots temporarily lose control. But, again, that's not enough to crash the plane. That's not to say it's never happened. In 1966, human error and turbulence combined to bring a plane down over Mount Fuji.

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Air accident investigations and aircraft safety inspections are now more effective, while improvements in manufacturing technology and better quality control are also making aircraft safer.

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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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Your chances of being involved in a fatal plane crash are incredibly small – around 1 in 11 million, according to Harvard researchers. While your odds of being in a plane accident are about 1 in 1.2 million, survivability rates are about 95.7% – so the odds are with you no matter how you look at it.

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The tray tables are only wiped down at the end of the night and not between flights. The seat pockets are sometimes emptied out between flights but that isn't always a guarantee. Airplane seats are almost never cleaned. There are many planes that don't get any type of cleaning at all throughout the day.

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Mandated Times Between Overhauls (TBOs) vary based on different engine categories and types. Older and smaller jet engines typically have TBOs of 5,000 hours at the most. More modern engines have about 6,000 hours or more.

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A and B checks are lighter checks, while C and D are considered heavier checks. Aircraft operators may perform some work at their own facilities, but often checks, and especially the heavier checks, take place at maintenance, repair and overhaul (MRO) company sites.

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A lot of airports have restrictions on night flights because of noise issues. Also some smaller domestic airports close at night. There are a few that leave late at night in order to take advantage of the time difference in the arrival city. There aren't more because there isn't much demand for them.

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On many aircraft types, pilots can open the side windows in the cockpit. The main reason for this is not for ventilation or vision; it is related to aircraft safety law.

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Use of visual entertainment such as movies, television programs, video games, etc., is not allowed for a flight crew as they are required to maintain visual scanning outside the aircraft, if able, for situational awareness and collision avoidance.

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September 24, 2023 A single-engine Beechcraft BE23 crashed in a field near Roger M Dreyer Memorial Airport in Gonzales, Texas, around 7:30 p.m. local time on Saturday, September 24. Only the pilot was on board. The FAA and NTSB will investigate.

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The top 10 safest airlines 2023
  • Qantas.
  • Air New Zealand.
  • Etihad Airways.
  • Qatar Airways.
  • Singapore Airlines.
  • TAP Air Portugal.
  • Emirates.
  • Alaska Airlines.


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When an aircraft experiences turbulence, the plane can drop or change altitude suddenly. This is why pilots always caution passengers to buckle up and stay seated when they are experiencing flight turbulence. The sudden movements put passengers at risk.

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It's almost unheard of for turbulence to cause a crash, but it can lead to costly repairs for carriers. Usually, the damage is to cabin components like seats and overhead bins when luggage falls out or people hit them. Turbulence-related damage, delays and injuries cost airlines up to $500 million per year.

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The disruption in the air current which helps a plane to fly results in shakes and it is referred to as turbulence. Also known as air pockets, turbulence can cause a sudden loss of altitude temporarily.

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