The unscheduled maintenance is a very important item in the airline maintenance proposal and plan. Because of the uncertainty of the unscheduled maintenance, in order to develop the effect platform, the specific requirement and operation characteristics of dedicated airlines should be investigated and the detailed requirement should be analyzed. The Delphi and Oracle software had been implemented to develop a dedicated unscheduled maintenance system, using the life cycle management of the unscheduled form as the system core function, to realize the airline unscheduled maintenance management. Some critical technology about the platform had been introduced. The real operation of the platform shown the effective result of saving the cost and shorten the maintenance time.