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A B757-200 had a right aileron power control actuator installed improperly with no anti rotation clips installed on the actuator rod end bolt and the reaction link bolt.
| Attributes | |
| ACN | 404833 |
| Time | |
| Date | 199805 |
| Day | Sat |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : zzz |
| State Reference | US |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Environment | |
| Light | Daylight |
| Aircraft 1 | |
| Controlling Facilities | tower : mlb |
| Operator | common carrier : air carrier |
| Make Model Name | B757-200 |
| Operating Under FAR Part | Part 121 |
| Navigation In Use | Other Other |
| Flight Phase | other |
| Flight Plan | None |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | other personnel other |
| Qualification | other other : other |
| ASRS Report | 404833 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | other personnel other |
| Qualification | other other : other |
| Events | |
| Anomaly | non adherence : published procedure non adherence : far |
| Independent Detector | other other : unspecified |
| Resolutory Action | none taken : detected after the fact |
| Consequence | Other |
| Supplementary | |
| Air Traffic Incident | other |
Narrative:
This event was the removal and installation of the right wing aileron on air carrier B757. While installing the aileron power control actuator rod end bolt and the reaction link bolts, the bolt anti rotation clips were removed to facilitate the torquing of the bolts. The anti rotation clips were accidentally left off of bolts. In the B757 manual for removing and installing the aileron, it does not mention anything about the removal or installation of the anti rotation clips. To further prevent this from recurring, a revision in the manual for removal and installation of clips should be inserted. The omission of these anti rotation clips in no way affects the structural integrity of the aileron, or the operation of the aileron system.
Original NASA ASRS Text
Title: A B757-200 HAD A R AILERON PWR CTL ACTUATOR INSTALLED IMPROPERLY WITH NO ANTI ROTATION CLIPS INSTALLED ON THE ACTUATOR ROD END BOLT AND THE REACTION LINK BOLT.
Narrative: THIS EVENT WAS THE REMOVAL AND INSTALLATION OF THE R WING AILERON ON ACR B757. WHILE INSTALLING THE AILERON PWR CTL ACTUATOR ROD END BOLT AND THE REACTION LINK BOLTS, THE BOLT ANTI ROTATION CLIPS WERE REMOVED TO FACILITATE THE TORQUING OF THE BOLTS. THE ANTI ROTATION CLIPS WERE ACCIDENTALLY LEFT OFF OF BOLTS. IN THE B757 MANUAL FOR REMOVING AND INSTALLING THE AILERON, IT DOES NOT MENTION ANYTHING ABOUT THE REMOVAL OR INSTALLATION OF THE ANTI ROTATION CLIPS. TO FURTHER PREVENT THIS FROM RECURRING, A REVISION IN THE MANUAL FOR REMOVAL AND INSTALLATION OF CLIPS SHOULD BE INSERTED. THE OMISSION OF THESE ANTI ROTATION CLIPS IN NO WAY AFFECTS THE STRUCTURAL INTEGRITY OF THE AILERON, OR THE OP OF THE AILERON SYS.
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.