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An MD80 had the incorrect engine fan blades installed. Discovered by engine shop at engine overhaul. Possibly caused by parts tag legibility.
| Attributes | |
| ACN | 723653 |
| Time | |
| Date | 200605 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Aircraft 1 | |
| Operator | common carrier : air carrier |
| Make Model Name | MD-80 Series (DC-9-80) Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| ASRS Report | 723653 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : lead technician |
| ASRS Report | 723652 |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance maintenance problem : improper documentation non adherence : published procedure non adherence : far |
| Independent Detector | other other : 4 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other |
| Factors | |
| Maintenance | contributing factor : work cards performance deficiency : installation performance deficiency : non compliance with legal requirements performance deficiency : logbook entry performance deficiency : inspection |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Chart Or Publication Company |
| Primary Problem | Maintenance Human Performance |
Narrative:
I was notified today jan/xa/07 of an event that happened on may/xa/06 regarding aircraft first stage fan blades. Required replacement due to FOD the blades were replaced in accordance with maintenance manual procedures. The mpn (manufacturer's part number) were installed. The differences between is mpn 1 and 002. In most cases the dash numbers are not legible and the paperwork has no dash numbers recorded. The engine shop found this problem at overhaul; stating wrong blades were installed. I am presently pursuing documentation in forms of records from engine shop and aog (aircraft on ground) list and serial numbers. Mpn's are identical; so I will be more diligent in the future if it is found to be an error on my part. Dash numbers are not always stamped or etched in bottom of blades. All series a blades; which air carrier no longer uses; have been pulled from stock to ensure no further incidents.
Original NASA ASRS Text
Title: AN MD80 HAD THE INCORRECT ENG FAN BLADES INSTALLED. DISCOVERED BY ENG SHOP AT ENG OVERHAUL. POSSIBLY CAUSED BY PARTS TAG LEGIBILITY.
Narrative: I WAS NOTIFIED TODAY JAN/XA/07 OF AN EVENT THAT HAPPENED ON MAY/XA/06 REGARDING ACFT FIRST STAGE FAN BLADES. REQUIRED REPLACEMENT DUE TO FOD THE BLADES WERE REPLACED IN ACCORDANCE WITH MAINT MANUAL PROCS. THE MPN (MANUFACTURER'S PART NUMBER) WERE INSTALLED. THE DIFFERENCES BTWN IS MPN 1 AND 002. IN MOST CASES THE DASH NUMBERS ARE NOT LEGIBLE AND THE PAPERWORK HAS NO DASH NUMBERS RECORDED. THE ENG SHOP FOUND THIS PROB AT OVERHAUL; STATING WRONG BLADES WERE INSTALLED. I AM PRESENTLY PURSUING DOCUMENTATION IN FORMS OF RECORDS FROM ENG SHOP AND AOG (ACFT ON GND) LIST AND SERIAL NUMBERS. MPN'S ARE IDENTICAL; SO I WILL BE MORE DILIGENT IN THE FUTURE IF IT IS FOUND TO BE AN ERROR ON MY PART. DASH NUMBERS ARE NOT ALWAYS STAMPED OR ETCHED IN BOTTOM OF BLADES. ALL SERIES A BLADES; WHICH ACR NO LONGER USES; HAVE BEEN PULLED FROM STOCK TO ENSURE NO FURTHER INCIDENTS.
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.