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A B747-400 while being fueled experienced a large fuel spill due to overfueling caused by failure to follow fueling procedures.
| Attributes | |
| ACN | 691028 |
| Time | |
| Date | 200603 |
| Local Time Of Day | 1801 To 2400 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B747-400 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Qualification | technician : powerplant technician : airframe |
| Experience | maintenance technician : 21 |
| ASRS Report | 691028 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | oversight : supervisor |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance non adherence : far non adherence : published procedure |
| Independent Detector | other other : 1 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other Other |
| Factors | |
| Maintenance | contributing factor : manuals contributing factor : schedule pressure performance deficiency : training performance deficiency : unqualified personnel performance deficiency : non compliance with legal requirements |
| Supplementary | |
| Problem Areas | Environmental Factor Maintenance Human Performance Aircraft Chart Or Publication Company |
| Primary Problem | Maintenance Human Performance |
Narrative:
Under pressure to fulfill air carrier X request; combined with the approaching departure deadline; mrs X made a bad decision. She asked the fueler to rechk the fuel density and used only 1 fuel hose hook-up. She disabled the volumetric top-off system and pulled the fuel overfill control circuit breaker and told the fueler to add carefully 1500 kilos of fuel to the center tank only. Before the fueler could complete his load; fuel started to spill out on both wingtips.
Original NASA ASRS Text
Title: A B747-400 WHILE BEING FUELED EXPERIENCED A LARGE FUEL SPILL DUE TO OVERFUELING CAUSED BY FAILURE TO FOLLOW FUELING PROCS.
Narrative: UNDER PRESSURE TO FULFILL ACR X REQUEST; COMBINED WITH THE APCHING DEP DEADLINE; MRS X MADE A BAD DECISION. SHE ASKED THE FUELER TO RECHK THE FUEL DENSITY AND USED ONLY 1 FUEL HOSE HOOK-UP. SHE DISABLED THE VOLUMETRIC TOP-OFF SYS AND PULLED THE FUEL OVERFILL CTL CIRCUIT BREAKER AND TOLD THE FUELER TO ADD CAREFULLY 1500 KILOS OF FUEL TO THE CTR TANK ONLY. BEFORE THE FUELER COULD COMPLETE HIS LOAD; FUEL STARTED TO SPILL OUT ON BOTH WINGTIPS.
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.