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B737-400 crew was dispatched with a fuel gauge MEL'ed inoperative. The totalizer was not deactivated as called for in MEL procedures.
| Attributes | |
| ACN | 586571 |
| Time | |
| Date | 200307 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : cyvr.airport |
| State Reference | BC |
| Altitude | agl single value : 0 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B737-400 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : parked |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| ASRS Report | 586571 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : multi engine pilot : commercial pilot : instrument |
| ASRS Report | 586669 |
| Events | |
| Anomaly | aircraft equipment problem : less severe maintenance problem : improper maintenance maintenance problem : non compliance with mel non adherence : published procedure non adherence : far non adherence : company policies other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : fuel quantity totalizer other flight crewa other flight crewb |
| Resolutory Action | none taken : detected after the fact none taken : anomaly accepted |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : schedule pressure performance deficiency : non compliance with legal requirements |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Company Aircraft |
| Primary Problem | Maintenance Human Performance |
Narrative:
Had a bad #2 fuel pump going into yvr. Wrote it up and contract mx came out to handle the problem. The maintenance technician was not too familiar with the system and we worked together to ensure that the proper fuel paperwork was done for the inoperative gauge. He signed off the MEL and we left for sfo. The fuel gauge was intermittent and I missed the fact that the totalizer should have been bypassed, hence leading to manual entries. The gauge was working fine and the fuel total was transmitted to the FMC -- this was the same airplane that I lost the dc bus on about 45 mins after takeoff for sfo and I didn't even think about the maintenance not being done correctly until after we landed. Anyway, the book was signed off by maintenance, all the blocks were correct, but the maintenance procedure was evidently not done correctly which led to my not doing the operations procedure correctly. And I read the MEL before we left yvr. Supplemental information from acn 586669: right fuel gauge inoperative in the air. Wrote the item in the logbook and contract maintenance filled out the proper paperwork and signed the logbook. He didn't collar the C/B which is per the MEL.
Original NASA ASRS Text
Title: B737-400 CREW WAS DISPATCHED WITH A FUEL GAUGE MEL'ED INOP. THE TOTALIZER WAS NOT DEACTIVATED AS CALLED FOR IN MEL PROCS.
Narrative: HAD A BAD #2 FUEL PUMP GOING INTO YVR. WROTE IT UP AND CONTRACT MX CAME OUT TO HANDLE THE PROB. THE MAINT TECHNICIAN WAS NOT TOO FAMILIAR WITH THE SYS AND WE WORKED TOGETHER TO ENSURE THAT THE PROPER FUEL PAPERWORK WAS DONE FOR THE INOP GAUGE. HE SIGNED OFF THE MEL AND WE LEFT FOR SFO. THE FUEL GAUGE WAS INTERMITTENT AND I MISSED THE FACT THAT THE TOTALIZER SHOULD HAVE BEEN BYPASSED, HENCE LEADING TO MANUAL ENTRIES. THE GAUGE WAS WORKING FINE AND THE FUEL TOTAL WAS XMITTED TO THE FMC -- THIS WAS THE SAME AIRPLANE THAT I LOST THE DC BUS ON ABOUT 45 MINS AFTER TAKEOFF FOR SFO AND I DIDN'T EVEN THINK ABOUT THE MAINT NOT BEING DONE CORRECTLY UNTIL AFTER WE LANDED. ANYWAY, THE BOOK WAS SIGNED OFF BY MAINT, ALL THE BLOCKS WERE CORRECT, BUT THE MAINT PROC WAS EVIDENTLY NOT DONE CORRECTLY WHICH LED TO MY NOT DOING THE OPS PROC CORRECTLY. AND I READ THE MEL BEFORE WE LEFT YVR. SUPPLEMENTAL INFO FROM ACN 586669: R FUEL GAUGE INOP IN THE AIR. WROTE THE ITEM IN THE LOGBOOK AND CONTRACT MAINT FILLED OUT THE PROPER PAPERWORK AND SIGNED THE LOGBOOK. HE DIDN'T COLLAR THE C/B WHICH IS PER THE MEL.
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.