De Havilland REAR. FFC offers New PMA and Overhauled/Repaired fuel cells for all aircraft platforms and the most extensive fuel cell inventory in the world. Since 1977, FFC has set the standard for timely fuel cell repair and reliable manufacturing. Years of experience, certified technicians, thousands of satisfied customers and a 10 Year Warranty allow FFC to offer the most reliable and highest quality products in the aviation industry. FFC's strategic location in Memphis, Tennessee allows next day delivery - Monday through Friday until midnight and up to 7 pm on Saturdays.