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A B737-300 having had the aft engine mount washer installed incorrectly -- thin side up. Should have had thick side up.
| Attributes | |
| ACN | 660278 |
| Time | |
| Date | 200506 |
| 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 | B737-300 |
| Operating Under FAR Part | Part 121 |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : powerplant technician : airframe |
| ASRS Report | 660278 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : lead technician |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper documentation maintenance problem : improper maintenance non adherence : published procedure non adherence : far |
| Independent Detector | other other : 1 |
| Resolutory Action | none taken : detected after the fact |
| Consequence | other other |
| Factors | |
| Maintenance | performance deficiency : inspection performance deficiency : non compliance with legal requirements performance deficiency : logbook entry performance deficiency : installation performance deficiency : scheduled maintenance |
| Supplementary | |
| Problem Areas | Aircraft Chart Or Publication Maintenance Human Performance |
| Primary Problem | Maintenance Human Performance |
Narrative:
Installing aft engine mount washer and nut. Installed washer incorrectly. Per maintenance manual; says install thick end up. It was installed thin side up.
Original NASA ASRS Text
Title: A B737-300 HAVING HAD THE AFT ENG MOUNT WASHER INSTALLED INCORRECTLY -- THIN SIDE UP. SHOULD HAVE HAD THICK SIDE UP.
Narrative: INSTALLING AFT ENG MOUNT WASHER AND NUT. INSTALLED WASHER INCORRECTLY. PER MAINT MANUAL; SAYS INSTALL THICK END UP. IT WAS INSTALLED THIN SIDE UP.
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.