A method of performing an operation comprises operation steps and
evaluation steps. The evaluation steps comprise:
identifying a set of performance shaping factors which influence the
outcome of the operation;
allocating a probability value to each performance shaping factor, the
probability value representing the influence of the respective performance
shaping factor on the performance of the operation;
allocating a weighting value to each performance shaping factor, the
weighting value representing the significance of the respective
performance shaping factor relative to at least one other of the
performance shaping factors;
calculating, from the probability values and the weighting values, an
effectiveness value representing the effectiveness of the operation.
The operation may be an inspection process, for example on an aircraft or a
fleet of aircraft.
