I request this increased range variant that was in use with CAAC.
A further two aircraft, slightly modified and designated Trident Super 3B were built for CAAC of China. The main difference was additional fuel capacity (6,000 Imp. Gal as opposed to 5,620) which resulted in an additional range of 400 miles and an increased MTOW of 159,900 lbs. Both are believed to still exist, in storage in China. http://www.hs121.org/