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A B737-400 reported a fuel boost pump tripped a circuit breaker. Technician checked pump and wiring per maintenance manual procedures. Checked ok.
| Attributes | |
| ACN | 652582 |
| Time | |
| Date | 200503 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B737-400 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| ASRS Report | 652582 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : lead technician |
| Events | |
| Anomaly | aircraft equipment problem : critical |
| Independent Detector | aircraft equipment other aircraft equipment : boost pump low pressure light other flight crewa other flight crewb |
| Resolutory Action | other |
| Consequence | other |
| Supplementary | |
| Problem Areas | Aircraft Chart Or Publication Maintenance Human Performance |
| Primary Problem | Aircraft |
Narrative:
Notified aircraft X had a popped circuit breaker. I discussed with my lead appropriate action. I explained to my lead my intentions to inspect wiring and cannon plug at the boost pump tank #1; left forward. I removed boost pump panel and inspected cannon plug and wiring. No defects were found. In addition; a 90-day history for fuel boost pump problems was researched with no problems found. I performed fuel boost pump operation check in accordance with maintenance manual 28-22-41 page 411 step I through page 414 step I10 approximately 5 times. In addition; 600 pounds of fuel was xferred from the left forward boost pump to the center. No defects were noted from operations check or xfer of fuel.
Original NASA ASRS Text
Title: A B737-400 RPTED A FUEL BOOST PUMP TRIPPED A CIRCUIT BREAKER. TECHNICIAN CHKED PUMP AND WIRING PER MAINT MANUAL PROCS. CHKED OK.
Narrative: NOTIFIED ACFT X HAD A POPPED CIRCUIT BREAKER. I DISCUSSED WITH MY LEAD APPROPRIATE ACTION. I EXPLAINED TO MY LEAD MY INTENTIONS TO INSPECT WIRING AND CANNON PLUG AT THE BOOST PUMP TANK #1; L FORWARD. I REMOVED BOOST PUMP PANEL AND INSPECTED CANNON PLUG AND WIRING. NO DEFECTS WERE FOUND. IN ADDITION; A 90-DAY HISTORY FOR FUEL BOOST PUMP PROBS WAS RESEARCHED WITH NO PROBS FOUND. I PERFORMED FUEL BOOST PUMP OP CHK IN ACCORDANCE WITH MAINT MANUAL 28-22-41 PAGE 411 STEP I THROUGH PAGE 414 STEP I10 APPROX 5 TIMES. IN ADDITION; 600 LBS OF FUEL WAS XFERRED FROM THE L FORWARD BOOST PUMP TO THE CTR. NO DEFECTS WERE NOTED FROM OPS CHK OR XFER OF FUEL.
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.