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A B767-300 mechanic reports on neglecting to install a new o-ring on the drive seal during replacement of the #2 engine fuel pump.
| Attributes | |
| ACN | 774610 |
| Time | |
| Date | 200801 |
| Local Time Of Day | 0001 To 0600 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | B767-300 and 300 ER |
| Operating Under FAR Part | Part 121 |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| ASRS Report | 774610 |
| Events | |
| Anomaly | maintenance problem : improper maintenance non adherence : far non adherence : published procedure |
| Independent Detector | other other : 1 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other |
| Factors | |
| Maintenance | contributing factor : weather contributing factor : lighting performance deficiency : installation performance deficiency : repair performance deficiency : scheduled maintenance |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Aircraft Environmental Factor |
| Primary Problem | Maintenance Human Performance |
Narrative:
I was changing a main engine fuel pump on #2 engine on aircraft X. The maintenance manual had a note to replace the drive seal since the pump was already off. I took the old drive seal out and put the new drive seal in; however; I neglected to put the o-ring on the new seal. Callback conversation with reporter revealed the following information: reporter stated after he replaced the engine fuel pump; fuel was found leaking from the fuel pump drain line during the engine run. The fuel pump was removed and the missing o-ring was installed. No further problems occurred.
Original NASA ASRS Text
Title: A B767-300 MECHANIC REPORTS ON NEGLECTING TO INSTALL A NEW O-RING ON THE DRIVE SEAL DURING REPLACEMENT OF THE #2 ENG FUEL PUMP.
Narrative: I WAS CHANGING A MAIN ENG FUEL PUMP ON #2 ENG ON ACFT X. THE MAINT MANUAL HAD A NOTE TO REPLACE THE DRIVE SEAL SINCE THE PUMP WAS ALREADY OFF. I TOOK THE OLD DRIVE SEAL OUT AND PUT THE NEW DRIVE SEAL IN; HOWEVER; I NEGLECTED TO PUT THE O-RING ON THE NEW SEAL. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: REPORTER STATED AFTER HE REPLACED THE ENG FUEL PUMP; FUEL WAS FOUND LEAKING FROM THE FUEL PUMP DRAIN LINE DURING THE ENGINE RUN. THE FUEL PUMP WAS REMOVED AND THE MISSING O-RING WAS INSTALLED. NO FURTHER PROBLEMS OCCURRED.
Data retrieved from NASA's ASRS site as of May 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.