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A B737 had the main landing gear walking beam attach fitting damaged by a tech using a rivet gun to drive out a bolt.
| Attributes | |
| ACN | 675079 |
| Time | |
| Date | 200510 |
| 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 Undifferentiated or Other Model |
| Operating Under FAR Part | Part 121 |
| Flight Phase | ground : maintenance |
| Person 1 | |
| Affiliation | company : air carrier |
| Function | maintenance : technician |
| Qualification | technician : powerplant technician : airframe |
| Experience | maintenance technician : 20 |
| ASRS Report | 675079 |
| Person 2 | |
| Affiliation | company : air carrier |
| Function | maintenance : inspector |
| Events | |
| Anomaly | aircraft equipment problem : critical 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 | contributing factor : schedule pressure performance deficiency : logbook entry performance deficiency : non compliance with legal requirements performance deficiency : repair |
| Supplementary | |
| Problem Areas | Maintenance Human Performance Chart Or Publication Aircraft |
| Primary Problem | Maintenance Human Performance |
Narrative:
I was changing the uplock support bolt on l-hand main landing gear and had to drive it out with a rivet gun. The gun slipped and hit the casting that the walking beam attaches to. I damaged the corner of the casting approximately 1/8 inch. I slopped the damaged to approximately 2 inch curve burnished sanding marks and primed. I didn't/forgot to have inspection eddy current for cracks and to record in logbook. I later informed management and was informed it would be looked into. Inspection programmed for eddy current inspection. Management was informed about 3 weeks after incident.
Original NASA ASRS Text
Title: A B737 HAD THE MAIN LNDG GEAR WALKING BEAM ATTACH FITTING DAMAGED BY A TECH USING A RIVET GUN TO DRIVE OUT A BOLT.
Narrative: I WAS CHANGING THE UPLOCK SUPPORT BOLT ON L-HAND MAIN LNDG GEAR AND HAD TO DRIVE IT OUT WITH A RIVET GUN. THE GUN SLIPPED AND HIT THE CASTING THAT THE WALKING BEAM ATTACHES TO. I DAMAGED THE CORNER OF THE CASTING APPROX 1/8 INCH. I SLOPPED THE DAMAGED TO APPROX 2 INCH CURVE BURNISHED SANDING MARKS AND PRIMED. I DIDN'T/FORGOT TO HAVE INSPECTION EDDY CURRENT FOR CRACKS AND TO RECORD IN LOGBOOK. I LATER INFORMED MGMNT AND WAS INFORMED IT WOULD BE LOOKED INTO. INSPECTION PROGRAMMED FOR EDDY CURRENT INSPECTION. MGMNT WAS INFORMED ABOUT 3 WKS AFTER INCIDENT.
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.