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A DC9-30 was released from heavy maintenance with the under wing sump drain shrouds missing. Aircraft operated for 1 month before installation.
| Attributes | |
| ACN | 644521 |
| Time | |
| Date | 200501 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | DC-9 30 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance |
| Person 1 | |
| Affiliation | company : air carrier |
| Qualification | technician : powerplant technician : airframe |
| Experience | maintenance technician : 18 |
| ASRS Report | 644521 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : inspector |
| Events | |
| Anomaly | aircraft equipment problem : less severe maintenance problem : improper maintenance maintenance problem : improper documentation non adherence : published procedure non adherence : far |
| Independent Detector | other other : 2 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other |
| Factors | |
| Maintenance | contributing factor : work cards performance deficiency : installation performance deficiency : inspection |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Aircraft Chart Or Publication |
| Primary Problem | Chart Or Publication |
Narrative:
Aircraft center tank drain cones were removed. Paperwork was unclr that they were to be removed. No warning tags were written that they were removed in a location that they could be missed. No non/routine work cards were written declaring that they were removed. The paperwork that might have found that they were removed was for different location of the aircraft (fuel tank interior); as opposed to area underneath fuel tank. Result: aircraft flew about 1 month before parts that were not installed were noticed and determined to belong to that aircraft. (Meaning aircraft was not sumped for that period of time.) the aircraft was then scheduled in and missing parts were then reinstalled. The paperwork is being revised so this incident should not happen again.
Original NASA ASRS Text
Title: A DC9-30 WAS RELEASED FROM HVY MAINT WITH THE UNDER WING SUMP DRAIN SHROUDS MISSING. ACFT OPERATED FOR 1 MONTH BEFORE INSTALLATION.
Narrative: ACFT CTR TANK DRAIN CONES WERE REMOVED. PAPERWORK WAS UNCLR THAT THEY WERE TO BE REMOVED. NO WARNING TAGS WERE WRITTEN THAT THEY WERE REMOVED IN A LOCATION THAT THEY COULD BE MISSED. NO NON/ROUTINE WORK CARDS WERE WRITTEN DECLARING THAT THEY WERE REMOVED. THE PAPERWORK THAT MIGHT HAVE FOUND THAT THEY WERE REMOVED WAS FOR DIFFERENT LOCATION OF THE ACFT (FUEL TANK INTERIOR); AS OPPOSED TO AREA UNDERNEATH FUEL TANK. RESULT: ACFT FLEW ABOUT 1 MONTH BEFORE PARTS THAT WERE NOT INSTALLED WERE NOTICED AND DETERMINED TO BELONG TO THAT ACFT. (MEANING ACFT WAS NOT SUMPED FOR THAT PERIOD OF TIME.) THE ACFT WAS THEN SCHEDULED IN AND MISSING PARTS WERE THEN REINSTALLED. THE PAPERWORK IS BEING REVISED SO THIS INCIDENT SHOULD NOT HAPPEN AGAIN.
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.