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An SF340B had the right main landing gear strut seals replaced and strut svced. After first landing flight crew reported strut leaking. Found bearing housing seal installed incorrectly.
| Attributes | |
| ACN | 716393 |
| Time | |
| Date | 200611 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Light | Dusk |
| Aircraft 1 | |
| Controlling Facilities | tower : evv.tower |
| Operator | common carrier : air carrier |
| Make Model Name | SF 340A |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| ASRS Report | 716393 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| ASRS Report | 716394 |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance maintenance problem : improper documentation non adherence : published procedure non adherence : far |
| Independent Detector | aircraft equipment other aircraft equipment : right strut leak other flight crewa |
| Resolutory Action | none taken : detected after the fact |
| Consequence | faa : investigated other other |
| Factors | |
| Maintenance | performance deficiency : non compliance with legal requirements performance deficiency : installation performance deficiency : scheduled maintenance |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Environmental Factor Chart Or Publication Aircraft |
| Primary Problem | Maintenance Human Performance |
Narrative:
I repacked the r-hand main landing gear strut. I requested the parts listed in the ipc; none were available. A short time later the supervisor came to me with alternate parts shown in computer parts catalog. These were the new and improved parts. I installed them and reassembled the strut. I left the next shift to service the strut and return the aircraft back to service. The next morning I was informed the strut was leaking again. And they had called the FAA. I was told they then disassembled the strut and found one of the seals had rolled and was upside down. I installed a bearing housing seal incorrectly.
Original NASA ASRS Text
Title: AN SF340B HAD THE R MAIN LNDG GEAR STRUT SEALS REPLACED AND STRUT SVCED. AFTER FIRST LNDG FLT CREW RPTED STRUT LEAKING. FOUND BEARING HOUSING SEAL INSTALLED INCORRECTLY.
Narrative: I REPACKED THE R-HAND MAIN LNDG GEAR STRUT. I REQUESTED THE PARTS LISTED IN THE IPC; NONE WERE AVAILABLE. A SHORT TIME LATER THE SUPVR CAME TO ME WITH ALTERNATE PARTS SHOWN IN COMPUTER PARTS CATALOG. THESE WERE THE NEW AND IMPROVED PARTS. I INSTALLED THEM AND REASSEMBLED THE STRUT. I LEFT THE NEXT SHIFT TO SVC THE STRUT AND RETURN THE ACFT BACK TO SVC. THE NEXT MORNING I WAS INFORMED THE STRUT WAS LEAKING AGAIN. AND THEY HAD CALLED THE FAA. I WAS TOLD THEY THEN DISASSEMBLED THE STRUT AND FOUND ONE OF THE SEALS HAD ROLLED AND WAS UPSIDE DOWN. I INSTALLED A BEARING HOUSING SEAL INCORRECTLY.
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.