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A mechanic for a state university inadvertently left an aileron hinge bolt off after installing an aileron on an small aircraft training aircraft.
| Attributes | |
| ACN | 244359 |
| Time | |
| Date | 199306 |
| Day | Thu |
| Local Time Of Day | 0601 To 1200 |
| Place | |
| Locale Reference | airport : gfk |
| State Reference | ND |
| Altitude | agl bound lower : 0 agl bound upper : 0 |
| Aircraft 1 | |
| Operator | general aviation : instructional |
| Make Model Name | Small Aircraft, Low Wing, 1 Eng, Retractable Gear |
| Flight Phase | ground : preflight |
| Flight Plan | None |
| Person 1 | |
| Affiliation | government other |
| Function | other personnel other |
| Qualification | other other : other |
| ASRS Report | 244359 |
| Person 2 | |
| Affiliation | government other |
| Function | flight crew : single pilot instruction : trainee |
| Qualification | pilot : student |
| Events | |
| Anomaly | aircraft equipment problem : critical other anomaly other |
| Independent Detector | other flight crewa |
| Resolutory Action | other |
| Consequence | Other |
| Supplementary | |
| Primary Problem | Aircraft |
| Air Traffic Incident | other |
Narrative:
Our flight activity is strictly flight training. On jun/thu/93, one of our a&P mechanics removed an aileron for repairs during a phase inspection. He repaired the aileron, completed the phase and returned the aircraft to service. 21 days later and 36 flts later, during a preflight, a student discovered that the outboard aileron hinge bolt was missing. At this point we are unable to determine if the bolt was not reinstalled or if it loosened and fell out. The mechanic who performed the aileron repairs feels he did install the bolt. No damage was done to the aircraft.
Original NASA ASRS Text
Title: A MECH FOR A STATE UNIVERSITY INADVERTENTLY LEFT AN AILERON HINGE BOLT OFF AFTER INSTALLING AN AILERON ON AN SMA TRAINING ACFT.
Narrative: OUR FLT ACTIVITY IS STRICTLY FLT TRAINING. ON JUN/THU/93, ONE OF OUR A&P MECHS REMOVED AN AILERON FOR REPAIRS DURING A PHASE INSPECTION. HE REPAIRED THE AILERON, COMPLETED THE PHASE AND RETURNED THE ACFT TO SVC. 21 DAYS LATER AND 36 FLTS LATER, DURING A PREFLT, A STUDENT DISCOVERED THAT THE OUTBOARD AILERON HINGE BOLT WAS MISSING. AT THIS POINT WE ARE UNABLE TO DETERMINE IF THE BOLT WAS NOT REINSTALLED OR IF IT LOOSENED AND FELL OUT. THE MECH WHO PERFORMED THE AILERON REPAIRS FEELS HE DID INSTALL THE BOLT. NO DAMAGE WAS DONE TO THE ACFT.
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.