DECENT MACHINERY Blower fans and blowers can be found in locomotives throughout the world.DECENT MACHINERY fans supplied for locomotive use are highly engineered and undergo rigorous prototype testing to ensure a long service life while enduring constant vibration, cycling, temperature fluctuations, and elevation changes.DECENT MACHINERY proudly carries the AAR M-1003 certificate, which is earned by satisfying the strict requirements put forth by the Association of American Railroads (AAR) quality assurance program.