United Airlines (UA, Chicago O'Hare) has been announced as the launch customer for a new Split Scimitar Winglet program by Aviation Partners Boeing. The new winglet design including a new winglet tip cap and ventral strake is expected to save United up to $250 million USD in fuel costs annually once installation has been completed on its fleet of 36 B737-700s, 130 B737-800s and 65 B737-900s.