OLD VERSION 8 0 C YYYYMMDD 1 VID VERSION 20090803 NEW VERSION 8 0 C YYYYMMDD 1 VID VERSION 20091203 BETA OLD FEI1EHA 6 2 N % 4 ENGINE HOUR ADJUSTED FUEL ECONOMY IMPROVEMENT, PHASE I NEW FEI1EHA 6 2 N % 4 ENGINE HOUR ADJUSTMENT FUEL ECONOMY IMPROVEMENT, PHASE I OLD FEI2EHA 6 2 N % 4 ENGINE HOUR ADJUSTED FUEL ECONOMY IMPROVEMENT, PHASE II NEW FEI2EHA 6 2 N % 4 ENGINE HOUR ADJUSTMENT FUEL ECONOMY IMPROVEMENT, PHASE II ADD FEISUM 6 2 N % 4 SUM OF FEI1FNL AND FEI2FNL