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A B757-200 with a right engine drain mast fuel leak was misidented as a fuel shutoff valve, but was actually found to be the high pressure fuel pump.
| Attributes | |
| ACN | 628840 |
| Time | |
| Date | 200408 |
| Day | Sun |
| Local Time Of Day | 1201 To 1800 |
| 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 | B757-200 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| ASRS Report | 628840 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance maintenance problem : improper documentation non adherence : far non adherence : published procedure |
| Independent Detector | aircraft equipment other aircraft equipment : fuel pump drain line other other : 2 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Factors | |
| Maintenance | performance deficiency : fault isolation performance deficiency : inspection performance deficiency : logbook entry performance deficiency : non compliance with legal requirements performance deficiency : scheduled maintenance |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Aircraft Environmental Factor |
| Primary Problem | Maintenance Human Performance |
Narrative:
While troubleshooting engine fuel leak, the drain mast leaking the fuel was misidented as fuel shutoff valve. It was actually from the autoplt fuel pump.
Original NASA ASRS Text
Title: A B757-200 WITH A R ENG DRAIN MAST FUEL LEAK WAS MISIDENTED AS A FUEL SHUTOFF VALVE, BUT WAS ACTUALLY FOUND TO BE THE HIGH PRESSURE FUEL PUMP.
Narrative: WHILE TROUBLESHOOTING ENG FUEL LEAK, THE DRAIN MAST LEAKING THE FUEL WAS MISIDENTED AS FUEL SHUTOFF VALVE. IT WAS ACTUALLY FROM THE AUTOPLT FUEL PUMP.
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.