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An SF340 was dispatched after replacement of the pressurization outflow valve to clear a deferred item. MEL special procedure to return the over pressure relief valve to the normally closed position was not accomplished.
| Attributes | |
| ACN | 681042 |
| Time | |
| Date | 200512 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | Saab-Scania Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| ASRS Report | 681042 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| ASRS Report | 681041 |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : non compliance with mel non adherence : far non adherence : published procedure |
| Independent Detector | aircraft equipment other aircraft equipment : cabin presssure indicator |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other |
| Factors | |
| Maintenance | contributing factor : work cards contributing factor : schedule pressure performance deficiency : logbook entry performance deficiency : non compliance with legal requirements performance deficiency : inspection performance deficiency : testing performance deficiency : repair |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Aircraft Chart Or Publication Environmental Factor |
| Primary Problem | Maintenance Human Performance |
Narrative:
Changed an outflow valve for a pressurization MEL. I watched mr X torque the lines and the clamp on the valve. Later in the morning when they were getting ready to pull the plane out to run it; I heard someone holler 'who's got the operations checks for the run?' mr Y said he did then he handed the operations check over; then went to run the engine. I went to the office to do paperwork. When they came back; they all said operations check good and signed it off and restored the MEL.
Original NASA ASRS Text
Title: AN SF340 WAS DISPATCHED AFTER REPLACEMENT OF THE PRESSURIZATION OUTFLOW VALVE TO CLR A DEFERRED ITEM. MEL SPECIAL PROC TO RETURN THE OVER PRESSURE RELIEF VALVE TO THE NORMALLY CLOSED POS WAS NOT ACCOMPLISHED.
Narrative: CHANGED AN OUTFLOW VALVE FOR A PRESSURIZATION MEL. I WATCHED MR X TORQUE THE LINES AND THE CLAMP ON THE VALVE. LATER IN THE MORNING WHEN THEY WERE GETTING READY TO PULL THE PLANE OUT TO RUN IT; I HEARD SOMEONE HOLLER 'WHO'S GOT THE OPS CHKS FOR THE RUN?' MR Y SAID HE DID THEN HE HANDED THE OPS CHK OVER; THEN WENT TO RUN THE ENG. I WENT TO THE OFFICE TO DO PAPERWORK. WHEN THEY CAME BACK; THEY ALL SAID OPS CHK GOOD AND SIGNED IT OFF AND RESTORED THE MEL.
Data retrieved from NASA's ASRS site as of January 2009 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.