How to access cylinder condition using a borescope.  The borescope is one of the most important and versatile tools for inspecting GA aircraft, and is the gold standard for assessing cylinder condition in reciprocating aircraft engines. However, aircraft and engine manufacturers have provided no guidance on how to perform a proper cylinder borescope inspection, and A&P training doesn't cover it. In this webinar, Mike Busch A&P/IA discusses what his company (Savvy Aviation) has done recently to fill this vacuum. Savvy has developed a detailed inspection protocol, produced a 35-minute training video demonstrating its use, and published a companion checklist with detailed descriptions and examples of each image to be captured. In addition, it has created a sophisticated web-based borescope image repository available free to anyone wishing to use it. This repository allows borescope images to be uploaded, tagged descriptively, archived, annotated, and produces elegant PDF reports.