Maintaining aircraft in good condition is a prerequisite for improved aviation safety and maintaining service levels. Aircraft maintenance is divided into four checks that are carried out at predetermined intervals based on the number of flight cycles (landings and take-offs) or flight time. These checks originated from Boeing's Maintenance Steering Group (MSG) in 1968 and were designed to ensure the safety of the Boeing B747-100 aircraft.
The checks are defined as follows:
- A Check: This is a light check usually carried out overnight at an airport gate. This check is carried out every month or every 500 flight hours (depending on the type of aircraft).
- B Check: This light check is also carried ...