Horizon Aircraft Engine Services Inc. DBA Bolduc Aviation is an FAA approved powerplant repair station located at the Anoka County Airport in Blaine, MN. We specialize, but are not limited to, the overhaul of all Lycoming and Continental engines and engine accessories. Horizon Aircraft Engine Services DBA Bolduc Aviation has been providing professional engine rebuilding and repair to factory zero-time specifications since 1979. High quality-control and professional procedures assures our customers of reliable maintenance