Narrative:

I was assigned air carrier task of reactivation of the hst system. As I recall, I began by reinstalling both cannon plugs in the wheel wells, where I moved the valve levers to make sure of the operation of the valve. I then moved to the wing fuel panel. Upon opening it, I found 2 MEL stickers. After checking the logbooks, I removed the stickers and went to the cockpit to check for circuit breakers as stated in the ami-task. I found no circuit breakers labeled stabilizer pump pulled and collared. As I read the paperwork again, it read in the cockpit (P85) panel with no quotations as to the exact circuit breaker's name or panel position number. I then checked panel labels: the P6 panel was labeled, but the center overhead panels were not labeled. So I rechked the cockpit and found no other panels or any circuit breakers collared or pulled. Moving on, I then found no MEL stickers on the fuel management panel. I now became concerned with the fact that there was no check-out in the procedure. After finding my lead, I requested him to read the task and confirm that there was no check-out, when he did confirm, and he had no advice as to how to check the system. I then removed and replaced the placards above the pfd's and made the logbook entries. These factors led me to believe that circuit breakers were not pulled or labeled, as I would expect them to be. First, the paperwork stated 'in the cockpit.' second, some of the overhead panels were not labeled in the cockpit, plus previous experience had taught me that circuit breakers are not always labeled what you would expect them to be, and finally no MEL stickers on the fuel management panel in the cockpit. I later found that 10 days prior to this incident, maintenance control had been notified and nothing had been done. The paperwork had been written incorrectly, because the circuit breakers were in the flight attendant's crew compartment at the tail of the plane and the correct circuit breaker's labels are 'horizontal stabilizer xfer/jett pump-right C3142' and 'horizontal stabilizer xfer/jett pump-left C3141,' not stabilizer pumps.

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Original NASA ASRS Text

Title: PRIOR TO ITS DIVERSION TO ANOTHER ARPT FOR INFLT PROBS, A B747-400 IS RELEASED FROM MAINT FACILITY WITHOUT THE CIRCUIT BREAKERS FOR THE HST WITHIN THE FMS BEING REACTIVATED AS REQUIRED BY THE SCHEDULED MAINT PROC AT ZZZ, US.

Narrative: I WAS ASSIGNED ACR TASK OF REACTIVATION OF THE HST SYS. AS I RECALL, I BEGAN BY REINSTALLING BOTH CANNON PLUGS IN THE WHEEL WELLS, WHERE I MOVED THE VALVE LEVERS TO MAKE SURE OF THE OP OF THE VALVE. I THEN MOVED TO THE WING FUEL PANEL. UPON OPENING IT, I FOUND 2 MEL STICKERS. AFTER CHKING THE LOGBOOKS, I REMOVED THE STICKERS AND WENT TO THE COCKPIT TO CHK FOR CIRCUIT BREAKERS AS STATED IN THE AMI-TASK. I FOUND NO CIRCUIT BREAKERS LABELED STABILIZER PUMP PULLED AND COLLARED. AS I READ THE PAPERWORK AGAIN, IT READ IN THE COCKPIT (P85) PANEL WITH NO QUOTATIONS AS TO THE EXACT CIRCUIT BREAKER'S NAME OR PANEL POS NUMBER. I THEN CHKED PANEL LABELS: THE P6 PANEL WAS LABELED, BUT THE CTR OVERHEAD PANELS WERE NOT LABELED. SO I RECHKED THE COCKPIT AND FOUND NO OTHER PANELS OR ANY CIRCUIT BREAKERS COLLARED OR PULLED. MOVING ON, I THEN FOUND NO MEL STICKERS ON THE FUEL MGMNT PANEL. I NOW BECAME CONCERNED WITH THE FACT THAT THERE WAS NO CHK-OUT IN THE PROC. AFTER FINDING MY LEAD, I REQUESTED HIM TO READ THE TASK AND CONFIRM THAT THERE WAS NO CHK-OUT, WHEN HE DID CONFIRM, AND HE HAD NO ADVICE AS TO HOW TO CHK THE SYS. I THEN REMOVED AND REPLACED THE PLACARDS ABOVE THE PFD'S AND MADE THE LOGBOOK ENTRIES. THESE FACTORS LED ME TO BELIEVE THAT CIRCUIT BREAKERS WERE NOT PULLED OR LABELED, AS I WOULD EXPECT THEM TO BE. FIRST, THE PAPERWORK STATED 'IN THE COCKPIT.' SECOND, SOME OF THE OVERHEAD PANELS WERE NOT LABELED IN THE COCKPIT, PLUS PREVIOUS EXPERIENCE HAD TAUGHT ME THAT CIRCUIT BREAKERS ARE NOT ALWAYS LABELED WHAT YOU WOULD EXPECT THEM TO BE, AND FINALLY NO MEL STICKERS ON THE FUEL MGMNT PANEL IN THE COCKPIT. I LATER FOUND THAT 10 DAYS PRIOR TO THIS INCIDENT, MAINT CTL HAD BEEN NOTIFIED AND NOTHING HAD BEEN DONE. THE PAPERWORK HAD BEEN WRITTEN INCORRECTLY, BECAUSE THE CIRCUIT BREAKERS WERE IN THE FLT ATTENDANT'S CREW COMPARTMENT AT THE TAIL OF THE PLANE AND THE CORRECT CIRCUIT BREAKER'S LABELS ARE 'HORIZ STAB XFER/JETT PUMP-RIGHT C3142' AND 'HORIZ STAB XFER/JETT PUMP-LEFT C3141,' NOT STABILIZER PUMPS.

Data retrieved from NASA's ASRS site as of July 2007 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.