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A B757-200 with both utility busses inoperative is refused deferral by a dispatcher due to incomplete list of units and lighting not working.
| Attributes | |
| ACN | 524186 |
| Time | |
| Date | 200109 |
| Day | Mon |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Aircraft 1 | |
| Controlling Facilities | tower : ind.tower |
| Operator | common carrier : air carrier |
| Make Model Name | B757-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : parked ground : preflight |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | other personnel |
| Qualification | other |
| ASRS Report | 524186 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | other personnel other |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | aircraft equipment other aircraft equipment : lighting and galley power ind other flight crewb other other : person 1 mx 2 |
| Resolutory Action | other |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : manuals contributing factor : schedule pressure performance deficiency : logbook entry performance deficiency : repair |
| Supplementary | |
| Problem Areas | FAA Maintenance Human Performance Aircraft Chart Or Publication Company |
| Primary Problem | Chart Or Publication |
| Situations | |
| Publication | MINIMUM EQUIP LIST |
Narrative:
Maintenance controller called for placard on utility bus, reference 24-15. I asked which one. Maintenance controller says both. The MEL only has a restr if the left utility bus is inoperative, but written in pencil in the margin was, no galley power/water. I asked maintenance controller this and he stated that this is true and also many other things will be inoperative. He said it would take him an hour to list all the things that this takes out. I turned the placard down because I don't know what is inoperative. The captain also stated that we also lose numerous lights. The B757 MEL needs to be revised to include what else is inoperative when both utility busses are inoperative.
Original NASA ASRS Text
Title: A B757-200 WITH BOTH UTILITY BUSSES INOP IS REFUSED DEFERRAL BY A DISPATCHER DUE TO INCOMPLETE LIST OF UNITS AND LIGHTING NOT WORKING.
Narrative: MAINT CTLR CALLED FOR PLACARD ON UTILITY BUS, REF 24-15. I ASKED WHICH ONE. MAINT CTLR SAYS BOTH. THE MEL ONLY HAS A RESTR IF THE L UTILITY BUS IS INOP, BUT WRITTEN IN PENCIL IN THE MARGIN WAS, NO GALLEY PWR/WATER. I ASKED MAINT CTLR THIS AND HE STATED THAT THIS IS TRUE AND ALSO MANY OTHER THINGS WILL BE INOP. HE SAID IT WOULD TAKE HIM AN HOUR TO LIST ALL THE THINGS THAT THIS TAKES OUT. I TURNED THE PLACARD DOWN BECAUSE I DON'T KNOW WHAT IS INOP. THE CAPT ALSO STATED THAT WE ALSO LOSE NUMEROUS LIGHTS. THE B757 MEL NEEDS TO BE REVISED TO INCLUDE WHAT ELSE IS INOP WHEN BOTH UTILITY BUSSES ARE INOP.
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.