We studied a method of using a portable terminal to input inspection data into a facility management database and undertook research into a prototype data entry system that uses a cellular phone and a Personal Digital Assistant (PDA), applying speech recognition and a method to automatically identify facilities with radio frequency identification (RF-ID) tags. In addition, we conducted research into methods that would enable inspection data entry even in areas where electric wave is interrupted and an e-mail question answering system that facilitates manual information retrieval and simple fault diagnosis is under development. This paper describes the research results concerning the use of the portable terminal.