Actual FAR you are complying with:

 

 

 

 

from FAA website:

 

• You will need to consistently document your OJT activities. We recommend you document your experience on an Aviation Maintenance Technician (AMT) log. You can purchase a logbook, develop a log of your own, or document your activities using a sample log you find online. On your log, be sure to include these important details:
  • Maintenance task performed
  • Time spent on each task
  • Validation by a certificated Airframe and/or Powerplant Technician

 

farther down

The FAA may give you credit for your practical experience after an ASI has reviewed your documentary evidence. Your documentary evidence must show that you meet the time requirements (18 or 30 months, as applicable) and during that time you gained actual experience with the procedures, practices, materials, tools, machine tools, and equipment generally used in constructing, maintaining, or altering airframes or powerplants, appropriate to the rating sought.  The more documentary evidence you provide to the ASI, the better.

Documentary evidence is any record you provide that shows proof of training and OJT the practical experiences you have completed. Examples include:

• AMT log signed by your supervising mechanic;
• a statement from your employer that you earned practical experience with procedures, practices, materials, tools, machine tools, and/or equipment used in constructing, maintaining, and/or altering an airframe or a powerplant for the required time; and
• letter of recommendation.