EMB ERJ 145 ER/LR
Maintenance Airframe; Maintenance Powerplant
Aircraft Equipment Problem Less Severe; Deviation / Discrepancy - Procedural Maintenance; Deviation / Discrepancy - Procedural MEL / CDL; Deviation / Discrepancy - Procedural Published Material / Policy; Inflight Event / Encounter Fuel Issue
General Maintenance Action
Procedure; Aircraft; Software and Automation
Aircraft came in with MEL for two wing stub fuel tank pumps running together and unable to isolate pumps from each other. Trouble shot problem down to the fuel pump selector switch in the cockpit overhead panel. Canned fuel selector switch panel from Aircraft X which is currently in heavy check. When part was canned there was no physical indication on the part; which was still installed on Aircraft X; that there was a discrepancy written up against part in [the] maintenance software. After installation in aircraft OPS CHECKED GOOD NO DEFECTS NOTED IAW EMB 145 AMM 28-XX-XX as documented on Maintenance Logbook page 47XXXXX ITEM XX.When performing [the] maintenance software search for any open discrepancy's against the fuel switch panel search results were negative. However upon installation of new fuel switch panel in Aircraft X it was discovered that there was an open discrepancy located in the task section of [the] Job Card; which is not displayed or indexed in [the] maintenance software search parameters. Without opening each individual Job Card item there is no way to search through the task descriptions section of the Job Card. Canned fuel switch panel had no physical indication that there was a discrepancy against it and panel was still installed on Aircraft X.Add in a function to search task descriptions in [the] maintenance software.
Lead Technician reported using a cannibalized part and discovering it had an open item on it that was not apparent without a deep search using the maintenance software program.