The FLEX program was created to enable operators to add another Hot Section Interval of 1750 hours to the life limit of the engine, giving you a new TBO of up to 5250 hours. We have created an engine maintenance program that incorporates periodic boroscope surveys, oil analyses and trend monitoring along with a Hot Section Inspection at 3500 hours. In addition to having FAA and insurance company approval, the comprehensive FLEX program ensures a higher level of safety than the basic manufacturer’s engine maintenance program.