Narrative:

I was performing my preflight flow and noticed after turning all fuel pumps to the 'automatic' position that a fault light illuminated in the right wing #2 pump switch. I conferred with maintenance using my cell phone. Under his direction; I scanned all circuit breakers for the system. All fuel system breakers were 'in.' he directed me to turn off the #2 pump switch and then cycle Q26 and R29 circuit breakers for the pump. After cycling the breakers; I turned the right #2 engine fuel pump on as directed. Everything worked normally. It wasn't until we departed the station that I felt that I should have questioned maintenance's procedure. I looked at the flight manual and saw that I was indeed in grave error for cycling the breakers. This was an unintentional error on my part; but a serious one.

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Original NASA ASRS Text

Title: AN A320 CAPT REPORTS DURING PREFLIGHT BEING DIRECTED BY MAINT TO CYCLE FUEL PUMP CB'S; ONLY TO DISCOVER LATER THE PROCEDURE WAS IMPROPER.

Narrative: I WAS PERFORMING MY PREFLT FLOW AND NOTICED AFTER TURNING ALL FUEL PUMPS TO THE 'AUTO' POS THAT A FAULT LIGHT ILLUMINATED IN THE R WING #2 PUMP SWITCH. I CONFERRED WITH MAINT USING MY CELL PHONE. UNDER HIS DIRECTION; I SCANNED ALL CIRCUIT BREAKERS FOR THE SYS. ALL FUEL SYS BREAKERS WERE 'IN.' HE DIRECTED ME TO TURN OFF THE #2 PUMP SWITCH AND THEN CYCLE Q26 AND R29 CIRCUIT BREAKERS FOR THE PUMP. AFTER CYCLING THE BREAKERS; I TURNED THE R #2 ENG FUEL PUMP ON AS DIRECTED. EVERYTHING WORKED NORMALLY. IT WASN'T UNTIL WE DEPARTED THE STATION THAT I FELT THAT I SHOULD HAVE QUESTIONED MAINT'S PROC. I LOOKED AT THE FLT MANUAL AND SAW THAT I WAS INDEED IN GRAVE ERROR FOR CYCLING THE BREAKERS. THIS WAS AN UNINTENTIONAL ERROR ON MY PART; BUT A SERIOUS ONE.

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.