Narrative:

In flight; the first officer (PF) selected LOW2 to correct a slight fuel imbalance. We then received an EICAS caution for E2 low fuel pressure. I verified that all of the pumps were in the correct position and repeated the problem. After a few seconds; the EICAS caution cleared. The first officer and I both agreed that the system was not working correctly. I wrote up the discrepancy in the aml and notified local mtx. At the gate; I met an aircraft maintenance technician who was assigned to address the issue. I described the problem and showed him the log entry. He stated to me that the system was working correctly and that the caution message was normal. I restated my concern that the caution message was not normal when fuel is being crossfed; even for a few seconds. The amt repeated that since the #2 fuel pump turns off that you should see the caution message. I restated that I disagreed and that his understanding of the system may be incorrect and then left the gate as I was assigned to a flight on a different aircraft. I do not know what corrective action was taken. My concern for this event was that the amt does not understand the fuel system and failed to address the flight crews concern about the fuel system operating incorrectly. It seemed to me that the amt wanted to clear the discrepancy as quickly as he could since the flight was a quick turn.I feel that this event was caused by time pressure and unfamiliarity with the aircraft systems by the amt.

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Original NASA ASRS Text

Title: An EMB-145 Captain expressed his disagreement with a maintenance technician's interpretation of a temporary Low Fuel Pressure light which occurred during automatic system configuration to balance fuel.

Narrative: In flight; the First Officer (PF) selected LOW2 to correct a slight fuel imbalance. We then received an EICAS Caution for E2 LOW FUEL PRESSURE. I verified that all of the pumps were in the correct position and repeated the problem. after a few seconds; the EICAS Caution cleared. the FO and I both agreed that the system was not working correctly. I wrote up the discrepancy in the AML and notified Local MTX. At the gate; I met an Aircraft Maintenance Technician who was assigned to address the issue. I described the problem and showed him the log entry. He stated to me that the system was working correctly and that the caution message was normal. I restated my concern that the caution message was not normal when fuel is being crossfed; even for a few seconds. The AMT repeated that since the #2 Fuel Pump turns off that you should see the caution message. I restated that I disagreed and that his understanding of the system may be incorrect and then left the gate as I was assigned to a flight on a different aircraft. I do not know what corrective action was taken. My concern for this event was that the AMT does not understand the fuel system and failed to address the flight crews concern about the fuel system operating incorrectly. It seemed to me that the AMT wanted to clear the discrepancy as quickly as he could since the flight was a quick turn.I feel that this event was caused by time pressure and unfamiliarity with the aircraft systems by the AMT.

Data retrieved from NASA's ASRS site as of April 2012 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.