Abstract: An electronic flight bag is disclosed which includes an electronic logbook module having an electronic logbook database. The electronic logbook module is configured to compile a list of deferred maintenance items including one or more MEL items. The electronic flight bag also includes an onboard performance tool module operatively connected to the electronic logbook module. The onboard performance tool module is configured to access the list of deferred maintenance items compiled by the electronic logbook module and calculate a plurality of performance parameters. The electronic flight bag also includes an electronic document browser module operatively connected to the electronic logbook module and the onboard performance tool module. The electronic document browser module includes an electronic document browser database storing documentation regarding the MEL item(s) included in the list of deferred maintenance items compiled by the electronic logbook module.