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A B737-300 was dispatched in non compliance with 2 fuel boost pumps inoperative -- 1 pump in each main tank -- in conflict with the MEL requirement.
| Attributes | |
| ACN | 528103 |
| Time | |
| Date | 200110 |
| Day | Sat |
| Local Time Of Day | 1801 To 2400 |
| 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 | B737-300 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : preflight ground : parked |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Qualification | pilot : atp |
| Experience | flight time type : 39 |
| ASRS Report | 528103 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : first officer |
| Qualification | pilot : multi engine pilot : instrument pilot : commercial |
| Experience | flight time type : 934 |
| ASRS Report | 528099 |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : non compliance with mel non adherence : published procedure non adherence : far |
| Independent Detector | aircraft equipment other aircraft equipment : boost pump warning lights other other : person 4 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : schedule pressure contributing factor : manuals performance deficiency : non compliance with legal requirements performance deficiency : repair performance deficiency : logbook entry |
| Supplementary | |
| Problem Areas | Chart Or Publication Flight Crew Human Performance Maintenance Human Performance Aircraft |
| Primary Problem | Maintenance Human Performance |
| Situations | |
| Publication | MAXIMUM EQUIP LIST |
Narrative:
2 aft fuel pumps deferred, fresh maintenance release document, all deferred items with stickers and reference numbers. I thought that 1 fuel pump per main tank must be ok with maintenance to defer. No limitation in flight manual for main tank pumps. Informed by dispatch via commercial radio toward end of flight to call. Flight was illegal because apparently only 1 of 4 may be deferred. My trust in what appeared to be a clean logbook was misplaced. Additional postflt discussions with my first officer after finding out our illegal dispatch with this flight left me with no other ideas as to how to have prevented this.
Original NASA ASRS Text
Title: A B737-300 WAS DISPATCHED IN NON COMPLIANCE WITH 2 FUEL BOOST PUMPS INOP -- 1 PUMP IN EACH MAIN TANK -- IN CONFLICT WITH THE MEL REQUIREMENT.
Narrative: 2 AFT FUEL PUMPS DEFERRED, FRESH MAINT RELEASE DOCUMENT, ALL DEFERRED ITEMS WITH STICKERS AND REF NUMBERS. I THOUGHT THAT 1 FUEL PUMP PER MAIN TANK MUST BE OK WITH MAINT TO DEFER. NO LIMITATION IN FLT MANUAL FOR MAIN TANK PUMPS. INFORMED BY DISPATCH VIA COMMERCIAL RADIO TOWARD END OF FLT TO CALL. FLT WAS ILLEGAL BECAUSE APPARENTLY ONLY 1 OF 4 MAY BE DEFERRED. MY TRUST IN WHAT APPEARED TO BE A CLEAN LOGBOOK WAS MISPLACED. ADDITIONAL POSTFLT DISCUSSIONS WITH MY FO AFTER FINDING OUT OUR ILLEGAL DISPATCH WITH THIS FLT LEFT ME WITH NO OTHER IDEAS AS TO HOW TO HAVE PREVENTED THIS.
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.