Maintenance and preventive maintenance training program

If you operate under Part 135, you must establish a training program for anyone who evaluates whether maintenance or preventive maintenance work was done properly. This includes inspectors and supervisors who sign off on completed work.

The training program must ensure these personnel are:

• Fully informed about current procedures, techniques, and new equipment being used
• Competent to perform their specific duties

This regulation recognizes that maintenance standards and aircraft technology constantly evolve. Someone approving maintenance work needs ongoing training to make sound judgments about work quality. Without proper training, an inspector might miss problems or approve work that doesn't meet standards, creating safety risks.

The certificate holder is responsible for providing this training, whether maintenance is done in-house or contracted out. The goal is ensuring that anyone with authority to determine if maintenance is adequate has current knowledge and skills to do so correctly.

*This is a plain-English summary for study only. The official 14 CFR text on this page is controlling — always read the current regulation and consult a CFI.*