Incident Overview
A pilot and aircraft owner reported that the left main landing gear collapsed upon landing, marking the third such occurrence. The gear had been repaired twice previously after similar collapses on landing. According to the pilot, he had just retrieved the aircraft from the mechanic who performed the most recent repair. During the first landing after that repair, the left gear collapsed again.
Investigation Findings
Examination of the left gear assembly revealed that the attach bracket had been recently replaced. However, the bracket was found to be misaligned. This misalignment prevented the left landing gear from extending fully and locking into position, leading to the collapse upon touchdown.
Maintenance Issues
The mechanic responsible for the repair failed to properly correct the underlying issue, as the replacement bracket was installed out of alignment. Additionally, the mechanic did not complete the required maintenance record entries, as specified by regulations.
Conclusion
The incident was attributed to the mechanic's failure to perform an adequate repair and to document the work properly.