Method (10, 20, 30) for managing an automatic piloting system provided on an aircraft, said automatic piloting system comprising at least one computer which enables the implementation of a plurality of sequences of steps which generate different automatic piloting instructions of said aircraft, said management method (10, 20, 30) being suitable for managing at least one error in at least one sequence of steps which enable the generation of at least one automatic piloting instruction of said aircraft, characterized in that said method (10, 20, 30) comprises at least: • an identification step (11, 21, 31) enabling the identification of said at least one error in said at least one sequence of steps implemented by said at least one computer, said at least one error being an exceptional SEU-type error due to an external magnetic field, electromagnetic waves or ionising particles disturbing the operation of said at least one computer, said identification step (11, 21, 31) enabling the identification of at least one occurrence of said at least one error over a predetermined period of use of said aircraft, • a calculation step (12, 22, 32) for determining a total number of occurrences of said at least one error over said predetermined period of use of said aircraft, • a stopping step (13, 23, 33) which enables said at least one sequence of steps to be stopped in a first cycle of steps that is considered to be faulty when said total number of occurrences of said at least one error in said at least one sequence of steps is greater than or equal to a predetermined threshold value, • a reinitialisation step (14, 24, 34) for reinitialising said at least one sequence of steps, • a restart step (15, 25, 35) which enables the restart of said at least one sequence of steps from a second cycle of steps considered to be sound, said second cycle of steps being separate from said first cycle of steps, • a first sanctioning step (26, 36) for inhibiting a call for at least one first sequence of steps of at least one of said first and second cycles of steps when said total number of occurrences of said at least one error is greater than or equal to the number 1, and • a second sanctioning step (27, 37) which is separate from said first sanctioning step (26, 36), said second sanctioning step (27, 37) enabling the inhibition of a call for at least one second sequence of steps of at least one of said first and second cycles of steps when said total number of occurrences of said at least one error is greater than or equal to the number 2, said at least one second sequence of steps being separate from said at least one first sequence of steps. • an identification step (11, 21, 31) enabling the identification of said at least one error in said at least one sequence of steps implemented by said at least one computer, said at least one error being an exceptional SEU-type error due to an external magnetic field, electromagnetic waves or ionising particles disturbing the operation of said at least one computer, said identification step (11, 21, 31) enabling the identification of at least one occurrence of said at least one error over a predetermined period of use of said aircraft, • a calculation step (12, 22, 32) for determining a total number of occurrences of said at least one error over said predetermined period of use of said aircraft, • a stopping step (13, 23, 33) which enables said at least one sequence of steps to be stopped in a first cycle of steps that is considered to be faulty when said total number of occurrences of said at least one error in said at least one sequence of steps is greater than or equal to a predetermined threshold value, • a reinitialisation step (14, 24, 34) for reinitialising said at least one sequence of steps, • a restart step (15, 25, 35) which enables the restart of said at least one sequence of steps from a second cycle of steps considered to be sound, said second cycle of steps being separate from said first cycle of steps, • a first sanctioning step (26, 36) for inhibiting a call for at least one first sequence of steps of at least one of said first and second cycles of steps when said total number of occurrences of said at least one error is greater than or equal to the number 1, and • a second sanctioning step (27, 37) which is separate from said first sanctioning step (26, 36), said second sanctioning step (27, 37) enabling the inhibition of a call for at least one second sequence of steps of at least one of said first and second cycles of steps when said total number of occurrences of said at least one error is greater than or equal to the number 2, said at least one second sequence of steps being separate from said at least one first sequence of steps.