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A B777 aft outflow valve was replaced and new outflow valve failed self-test procedure. Technician write ups and documentation of removed valves did not meet maintenance manual requirements.
| Attributes | |
| ACN | 594044 |
| Time | |
| Date | 200309 |
| Day | Sun |
| Local Time Of Day | 0601 To 1200 |
| 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 | B777 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 | 594044 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : airframe technician : powerplant |
| Events | |
| Anomaly | aircraft equipment problem : less severe maintenance problem : improper documentation non adherence : published procedure non adherence : far non adherence : company policies |
| Independent Detector | other other : person 3 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Factors | |
| Maintenance | performance deficiency : non compliance with legal requirements performance deficiency : logbook entry |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Aircraft Chart Or Publication |
| Primary Problem | Maintenance Human Performance |
Narrative:
Replaced aft outflow valve per avionics standard new valve failed test per maintenance manual. Suspected bad valve from stock. Failed to comply with maintenance manual procedures in its entirety.
Original NASA ASRS Text
Title: A B777 AFT OUTFLOW VALVE WAS REPLACED AND NEW OUTFLOW VALVE FAILED SELF-TEST PROC. TECHNICIAN WRITE UPS AND DOCUMENTATION OF REMOVED VALVES DID NOT MEET MAINT MANUAL REQUIREMENTS.
Narrative: REPLACED AFT OUTFLOW VALVE PER AVIONICS STD NEW VALVE FAILED TEST PER MAINT MANUAL. SUSPECTED BAD VALVE FROM STOCK. FAILED TO COMPLY WITH MAINT MANUAL PROCS IN ITS ENTIRETY.
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.