Narrative:

Flight left the departure gate and began to taxi out to the runway. At approximately XA40; flight X contacted aircraft maintenance via the radio. I responded to the radio call. The crew informed me that the right aft fuel boost pump low pressure light was on when the pump was selected to the 'on' position. I asked the crew to check and see if the circuit breaker was popped on the lower P6 panel. The crew responded that it was. I asked the crew to select the pump to the 'off' position and to reset the breaker. The crew complied and told me that the breaker remained in. I then asked them to turn the pump on. They turned the pump on; and it worked normally. At the time I was satisfied that this problem was an anomaly and that the safety of the flight was not in question. I went on my lunch break about 30 mins later; and out of curiosity I checked to see if there was any procedure in the gpm relating to circuit breaker resets. I found gpm section X. At this point in time I am unsure as to the intent of this paragraph as it relates to flight X. What is the intent of the gpm when it tells me to 'locate the cause of a tripped circuit breaker?' do I need to check the wiring before attempting a reset? What troubleshooting procedures am I to follow? Should I have taken the aircraft OTS? I do not believe that this aircraft was operated in an unsafe manner; but I think that the gpm procedure needs some clarification.

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Original NASA ASRS Text

Title: A B767 ON TAXI OUT RPTS R AFT FUEL PUMP INOP. TECHNICIAN ASKS FOR CIRCUIT BREAKER CHK. CREW RPTS BREAKER TRIPPED. TECHNICIAN HAS CREW TURN PUMP OFF AND RESET BREAKER. BREAKER STAYS IN PUMP OP NORMAL.

Narrative: FLT LEFT THE DEP GATE AND BEGAN TO TAXI OUT TO THE RWY. AT APPROX XA40; FLT X CONTACTED ACFT MAINT VIA THE RADIO. I RESPONDED TO THE RADIO CALL. THE CREW INFORMED ME THAT THE R AFT FUEL BOOST PUMP LOW PRESSURE LIGHT WAS ON WHEN THE PUMP WAS SELECTED TO THE 'ON' POS. I ASKED THE CREW TO CHK AND SEE IF THE CIRCUIT BREAKER WAS POPPED ON THE LOWER P6 PANEL. THE CREW RESPONDED THAT IT WAS. I ASKED THE CREW TO SELECT THE PUMP TO THE 'OFF' POS AND TO RESET THE BREAKER. THE CREW COMPLIED AND TOLD ME THAT THE BREAKER REMAINED IN. I THEN ASKED THEM TO TURN THE PUMP ON. THEY TURNED THE PUMP ON; AND IT WORKED NORMALLY. AT THE TIME I WAS SATISFIED THAT THIS PROB WAS AN ANOMALY AND THAT THE SAFETY OF THE FLT WAS NOT IN QUESTION. I WENT ON MY LUNCH BREAK ABOUT 30 MINS LATER; AND OUT OF CURIOSITY I CHKED TO SEE IF THERE WAS ANY PROC IN THE GPM RELATING TO CIRCUIT BREAKER RESETS. I FOUND GPM SECTION X. AT THIS POINT IN TIME I AM UNSURE AS TO THE INTENT OF THIS PARAGRAPH AS IT RELATES TO FLT X. WHAT IS THE INTENT OF THE GPM WHEN IT TELLS ME TO 'LOCATE THE CAUSE OF A TRIPPED CIRCUIT BREAKER?' DO I NEED TO CHK THE WIRING BEFORE ATTEMPTING A RESET? WHAT TROUBLESHOOTING PROCS AM I TO FOLLOW? SHOULD I HAVE TAKEN THE ACFT OTS? I DO NOT BELIEVE THAT THIS ACFT WAS OPERATED IN AN UNSAFE MANNER; BUT I THINK THAT THE GPM PROC NEEDS SOME CLARIFICATION.

Data retrieved from NASA's ASRS site as of January 2009 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.