B727-200 crew had electrical problem that required return to the gate.

Attributes
ACN	524810
Time
Date	200109
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Environment
Light	Daylight
Aircraft 1
Operator	common carrier : air carrier
Make Model Name	B727-200
Operating Under FAR Part	Part 121
Flight Phase	ground : taxi ground : maintenance
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	maintenance : technician
Qualification	technician : airframe technician : powerplant
Experience	maintenance technician : 13
ASRS Report	524810
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	aircraft equipment problem : critical maintenance problem : improper documentation maintenance problem : improper maintenance non adherence : published procedure non adherence : far non adherence : company policies other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact other
Factors
Maintenance	contributing factor : schedule pressure performance deficiency : training performance deficiency : testing performance deficiency : repair performance deficiency : non compliance with legal requirements performance deficiency : inspection performance deficiency : fault isolation performance deficiency : logbook entry
Supplementary
Problem Areas	Aircraft Maintenance Human Performance Company
Primary Problem	Maintenance Human Performance

Narrative:

After 'light off' of #1 engine, on push back, the captain informed me that #1 tank aft boost pump circuit breaker had popped, resulting in a gate return (since they are prohibited from resetting boost pump or fuel qty, circuit breaker's) I noted (as captain did) that it happened as the engine generator took over from APU generator. I was confident this popped circuit breaker resulted from a power surge, which later, my suspicions proved right. I reset the circuit breaker, operations checked pump several times/mins with no further faults. It should be noted we also had another problem with the aircraft. The pneumatic duct supply gauge on the second officers panel was inoperative, again. It acted up earlier. In short ' the plane didn't want to leave,' and I knew it was a generation charge fluctuation that caused the circuit breaker to pop.

Original NASA ASRS Text

Title: B727-200 CREW HAD ELECTRICAL PROB THAT REQUIRED RETURN TO THE GATE.

Narrative: AFTER 'LIGHT OFF' OF #1 ENG, ON PUSH BACK, THE CAPT INFORMED ME THAT #1 TANK AFT BOOST PUMP CB HAD POPPED, RESULTING IN A GATE RETURN (SINCE THEY ARE PROHIBITED FROM RESETTING BOOST PUMP OR FUEL QTY, CB'S) I NOTED (AS CAPT DID) THAT IT HAPPENED AS THE ENG GENERATOR TOOK OVER FROM APU GENERATOR. I WAS CONFIDENT THIS POPPED CB RESULTED FROM A PWR SURGE, WHICH LATER, MY SUSPICIONS PROVED RIGHT. I RESET THE CB, OPS CHECKED PUMP SEVERAL TIMES/MINS WITH NO FURTHER FAULTS. IT SHOULD BE NOTED WE ALSO HAD ANOTHER PROB WITH THE ACFT. THE PNEUMATIC DUCT SUPPLY GAUGE ON THE SECOND OFFICERS PANEL WAS INOP, AGAIN. IT ACTED UP EARLIER. IN SHORT ' THE PLANE DIDN'T WANT TO LEAVE,' AND I KNEW IT WAS A GENERATION CHARGE FLUCTUATION THAT CAUSED THE CB TO POP.

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.