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JS41 inspector cleared a maintenance sign off that replaced aileron idler arm bushings. The hookup was installed backwards.
| Attributes | |
| ACN | 525249 |
| Time | |
| Date | 200108 |
| Day | Fri |
| Local Time Of Day | 1201 To 1800 |
| Place | |
| Locale Reference | airport : zzz.airport |
| State Reference | US |
| Altitude | agl single value : 0 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tracon : a80.tracon |
| Operator | common carrier : air carrier |
| Make Model Name | Jetstream 41 |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance |
| Flight Plan | IFR |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician maintenance : inspector |
| Qualification | technician : powerplant technician : inspection authority technician : airframe |
| Experience | maintenance technician : 7 |
| ASRS Report | 525249 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | flight crew : captain oversight : pic |
| Events | |
| Anomaly | aircraft equipment problem : critical maintenance problem : improper maintenance non adherence : far non adherence : published procedure other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | controller : issued new clearance controller : provided flight assist flight crew : diverted to another airport flight crew : landed in emergency condition flight crew : declared emergency none taken : detected after the fact other |
| Consequence | other other |
| Factors | |
| Maintenance | contributing factor : work cards contributing factor : manuals contributing factor : schedule pressure performance deficiency : inspection performance deficiency : installation performance deficiency : non compliance with legal requirements performance deficiency : repair performance deficiency : testing |
| Supplementary | |
| Problem Areas | Aircraft Company Maintenance Human Performance |
| Primary Problem | Company |
Narrative:
I performed an inspection on the lhand aileron idler arms after remove and replace to change bushings. On the aircraft first flight it entered into a hard bank. The aircraft returned safely. Upon inspection of the lhand aileron, it was found that the idler arms were installed backwards. Upon further investigation it was found that the figure in the maintenance manual was incorrect and showed the idler arms installed backwards. The aircraft manufacture was notified and the effected pages are being changed.
Original NASA ASRS Text
Title: JS41 INSPECTOR CLRED A MAINT SIGN OFF THAT REPLACED AILERON IDLER ARM BUSHINGS. THE HOOKUP WAS INSTALLED BACKWARDS.
Narrative: I PERFORMED AN INSPECTION ON THE LHAND AILERON IDLER ARMS AFTER REMOVE AND REPLACE TO CHANGE BUSHINGS. ON THE ACFT FIRST FLT IT ENTERED INTO A HARD BANK. THE ACFT RETURNED SAFELY. UPON INSPECTION OF THE LHAND AILERON, IT WAS FOUND THAT THE IDLER ARMS WERE INSTALLED BACKWARDS. UPON FURTHER INVESTIGATION IT WAS FOUND THAT THE FIGURE IN THE MAINT MANUAL WAS INCORRECT AND SHOWED THE IDLER ARMS INSTALLED BACKWARDS. THE ACFT MANUFACTURE WAS NOTIFIED AND THE EFFECTED PAGES ARE BEING CHANGED.
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.