The Williams FJ44 is a family of small, two-spool, turbofan engines produced by Williams International/Rolls-Royce. The FJ44 first flew on July 12, 1988 on the Scaled Composites/Beechcraft Triumph aircraft. FJ44’s have since become a standard powerplant for the light business jet market.
The FLEX program extends the useful operating life of your FJ44 engines to 5,000 hours or more, depending upon times, cycles and condition of the internal components. Aircraft owners may enroll in the FLEX program at any time up to TBO and in some cases even beyond.