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A B737-300 during a tank entry for a maintenance check it was discovered a right wing tank rib plate was not fastened to the rib causing damage to the internal fuel feed lines.
| Attributes | |
| ACN | 417774 |
| Time | |
| Date | 199810 |
| Day | Sat |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | atc facility : zzz airport : zzz |
| State Reference | US |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : tpa |
| Operator | common carrier : air carrier |
| Make Model Name | B737-300 |
| Navigation In Use | Other Other |
| Flight Phase | other |
| Flight Plan | None |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | other personnel other |
| Qualification | other other : other |
| ASRS Report | 417774 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | other personnel other |
| Qualification | other other : other |
| Events | |
| Anomaly | aircraft equipment problem : critical non adherence : far non adherence : published procedure other anomaly other |
| Independent Detector | other other : unspecified |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other Other |
| Supplementary | |
| Air Traffic Incident | other |
Narrative:
On jun/xa/97, right wing fuel quantity harness replacement was in progress. I completed the installation and test of harness, turned over to next shift. On oct/xb/98, aircraft came to maintenance for other maintenance. Fuel tank rib plate found off with damage to internal pressure fuel line. Callback conversation with reporter revealed the following information: the reporter stated that when the fuel quantity harness change was completed the tank was cleaned and the rib was fastened and torqued. The reporter said the final inspection was made by an inspector and signed off. The reporter stated a short time later the aircraft was brought into the hangar for a main landing gear fitting replacement which required tank entry. The reporter suspects that the rib plate was left off at this time.
Original NASA ASRS Text
Title: A B737-300 DURING A TANK ENTRY FOR A MAINT CHK IT WAS DISCOVERED A R WING TANK RIB PLATE WAS NOT FASTENED TO THE RIB CAUSING DAMAGE TO THE INTERNAL FUEL FEED LINES.
Narrative: ON JUN/XA/97, R WING FUEL QUANTITY HARNESS REPLACEMENT WAS IN PROGRESS. I COMPLETED THE INSTALLATION AND TEST OF HARNESS, TURNED OVER TO NEXT SHIFT. ON OCT/XB/98, ACFT CAME TO MAINT FOR OTHER MAINT. FUEL TANK RIB PLATE FOUND OFF WITH DAMAGE TO INTERNAL PRESSURE FUEL LINE. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THAT WHEN THE FUEL QUANTITY HARNESS CHANGE WAS COMPLETED THE TANK WAS CLEANED AND THE RIB WAS FASTENED AND TORQUED. THE RPTR SAID THE FINAL INSPECTION WAS MADE BY AN INSPECTOR AND SIGNED OFF. THE RPTR STATED A SHORT TIME LATER THE ACFT WAS BROUGHT INTO THE HANGAR FOR A MAIN LNDG GEAR FITTING REPLACEMENT WHICH REQUIRED TANK ENTRY. THE RPTR SUSPECTS THAT THE RIB PLATE WAS LEFT OFF AT THIS TIME.
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.