Method and device for detecting that the design loads of an aircraft have been exceeded

Method for detecting that design loads of an aircraft have been exceeded during moment of landing, necessitating a structural inspection of the said aircraft being invoked, comprising:

• in a step preliminary to the moment of landing:
• defining load criteria (C1, C2, . . . , Cp), which are measurable on ,the aircraft and representative of effective loads to which the aircraft is subjected;
• and
• determining laws of variation of allowable values (C1ad, C2ad, . . . , Cpad) of these load criteria, (C1, C2, . . . , Cp) as a function of input parameters (P1, P2, . . . , Pn) measurable on the aircraft;
• and
• at the moment of landing:
• measuring values of the said input parameters (P1, P2, . . . , Pn) and of the said load criteria (C1, C2, . . . , Cp);
• calculating, on the basis of the said laws of variation and of the said measured values of the input parameters, allowable values (C1ad, C2ad, . . . , Cpad) of the said load criteria (C1, C2, . . . , Cp);
• comprising for each of the said load criteria (C1, C2, . . . , Cp), measured effective value (C1m, C2m, . . . , Cpm) with calculated allowable value (C1ad, C2ad, . . . , Cpad);
• and determining, on the basis of the result of the various comparisons, whether a structural inspection has to be carried out.