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A B757-200 was dispatched in non compliance with a hydraulic low pressure warning light deferred per the MEL. Engine run to verify pressure omitted.
| Attributes | |
| ACN | 597471 |
| Time | |
| Date | 200310 |
| 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 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : powerplant technician : airframe |
| ASRS Report | 597471 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | aircraft equipment problem : less severe maintenance problem : non compliance with mel non adherence : published procedure non adherence : far |
| Independent Detector | aircraft equipment other aircraft equipment : system pressure indicator other other : person 1 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : schedule pressure performance deficiency : non compliance with legal requirements performance deficiency : logbook entry performance deficiency : testing |
| Supplementary | |
| Problem Areas | Aircraft Chart Or Publication Maintenance Human Performance Flight Crew Human Performance |
| Primary Problem | Maintenance Human Performance |
Narrative:
I was called 10 mins before departure to address a left hydraulic system pressure low light. I determined that it was an indication problem and placarded it accordingly to MEL 29.08. All criteria were met except to run the engine. I was under the impression the captain would verify hydraulic pressure from the engine driven pump.
Original NASA ASRS Text
Title: A B757-200 WAS DISPATCHED IN NON COMPLIANCE WITH A HYD LOW PRESSURE WARNING LIGHT DEFERRED PER THE MEL. ENG RUN TO VERIFY PRESSURE OMITTED.
Narrative: I WAS CALLED 10 MINS BEFORE DEP TO ADDRESS A L HYD SYS PRESSURE LOW LIGHT. I DETERMINED THAT IT WAS AN INDICATION PROB AND PLACARDED IT ACCORDINGLY TO MEL 29.08. ALL CRITERIA WERE MET EXCEPT TO RUN THE ENG. I WAS UNDER THE IMPRESSION THE CAPT WOULD VERIFY HYD PRESSURE FROM THE ENG DRIVEN 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.