Method for the analysis, by a processing device, of a first set of flight data that are related to the functioning of an aircraft when it is on flight ({ p ( i)} i ∈ I) the values ({ v ( i)} i ∈ I) of which were recorded during a flight, second sets of flight data that were recorded during previous flights being stored in a database and one nominal value was recorded beforehand for each flight data flights, the method being such that a flight event (E J,k) is detected if there is at least one value { v ( i) i ∈ I of one flight data of the first set of flight data exceed its nominal value and that this flight data corresponds to a value { v k ( j) j ∈ J of one flight data of one of said second sets of flight data { p ( j)} j ∈ J beforehand stored, characterised in that said method comprises the following steps: - a step of defining a subset of flight data ({ p ( o)} o ∈ O) that comprises at least one of the flight data of the first set ({ p ( i)} i ∈ I) and at least one flight data item of one of said second sets ({ p ( j)} j ∈ J), at least one of which exceeds its nominal value, at least one value of which exceeds its nominal value a correlation of this or these flight data ({ v ( i) i ∈ I) of this or these flight data of said first set ({ p ( i)} i ∈ I) with the value ({ v k ( j)} j ∈ J) of this or these flight data of said second set ({ p ( j)} j ∈ J) existing, - step of detecting an event of flight (E J,k) when at least one value of one flight data of said subset of flight data ({ p ( o)} o ∈ O) exceeds a nominal value and when this flight data corresponds to one value { v k ( j)} j ∈ J of one flight data of one of said second sets of flight data { p ( j)} j ∈ J beforehand stored, and - if no flight event is not detected at previous step, the following steps are performed, - a step of associating to said subset of flight data { p ( o)} o ∈ O a probability value of pairing (Pr( p o | p j)) between at least one of said second sets of flight data ({ p ( j)} j ∈ J) and said subset of flight data ({ p ( o)} o ∈ O) - a step of updating of said first set of flight data ({ p ( i)} i ∈ I) according to the probability value of pairing associated to said subset of flight data, said step of of updating comprising: - a step of adding at least one new flight data item ({ p ( n)} n ∈ N) of at least one of said second sets of flight data ({ p ( j)} j ∈ J) to the first set of flight data and/or - a step of deleting at least one of the flight data ({ p ( i)} i ∈ I) of the first set of flight data ({ p ( i)} i ∈ I); - a step of presenting said subset via a graphical interface. - a step of defining a subset of flight data ({ p ( o)} o ∈ O) that comprises at least one of the flight data of the first set ({ p ( i)} i ∈ I) and at least one flight data item of one of said second sets ({ p ( j)} j ∈ J), at least one of which exceeds its nominal value, at least one value of which exceeds its nominal value a correlation of this or these flight data ({ v ( i) i ∈ I) of this or these flight data of said first set ({ p ( i)} i ∈ I) with the value ({ v k ( j)} j ∈ J) of this or these flight data of said second set ({ p ( j)} j ∈ J) existing, - step of detecting an event of flight (E J,k) when at least one value of one flight data of said subset of flight data ({ p ( o)} o ∈ O) exceeds a nominal value and when this flight data corresponds to one value { v k ( j)} j ∈ J of one flight data of one of said second sets of flight data { p ( j)} j ∈ J beforehand stored, and - if no flight event is not detected at previous step, the following steps are performed, - a step of associating to said subset of flight data { p ( o)} o ∈ O a probability value of pairing (Pr( p o | p j)) between at least one of said second sets of flight data ({ p ( j)} j ∈ J) and said subset of flight data ({ p ( o)} o ∈ O) - a step of updating of said first set of flight data ({ p ( i)} i ∈ I) according to the probability value of pairing associated to said subset of flight data, said step of of updating comprising: - a step of adding at least one new flight data item ({ p ( n)} n ∈ N) of at least one of said second sets of flight data ({ p ( j)} j ∈ J) to the first set of flight data and/or - a step of deleting at least one of the flight data ({ p ( i)} i ∈ I) of the first set of flight data ({ p ( i)} i ∈ I); - a step of presenting said subset via a graphical interface.