Development of a two-dimensional aircraft maintenance estimation method

Abstract

In the aircraft operation there are few situations, in which the preventive maintenance cannot be used. For example this situation can be the aircraft wartime operation. Similar maintenance philosophy can be observed in printing-machine operation too, when corrective maintenance should be used. In cases mentioned above the needed maintenance work depends on the failure rate of equipment and work expenditure of repair basically. The failure rate and repairing time is stochastic parameter, which has a distribution function, mathematical expectation and variance. The method developed by the author estimates work expenditure of repair using a two-dimensional probability model. The reliability of this estimation is characterized by one collective probability not by multiplication of estimation's probabilities of expectable failure number and repair work expenditure. The paper will show the new two-dimensional maintenance estimation method theoretically, possibility of use and experiments of first application of developed method