Engine Alliance announced a 0.5% improvement in the fuel performance of its GP7200 engine in the latest performance handbook revision by Airbus today.
The improvement translates into a savings of 330,000 gallons of fuel or about $1 million annually, said Mary Ellen Jones, president of Engine Alliance, at the Farnborough air show.
Engine Alliance plans to make additional enhancements to the high-pressure turbine and compressor in the engine, and reduce the external weight by about 8lbs, adds Jones.
Turbine improvements will include improved blades, better sealing and optimised clearances.
Compressor improvements include optimised clearance and an improved surface finish.
Jones says the enhancements will result in fuel performance improvements of "tenths of a percent here and there" but no major change. They will be implemented between the end of this year and the end of 2013.
Engine Alliance is "very interested" in other aircraft programmes, including ones with manufacturers other than Airbus, but remains focused on the A380, says Jones.
The GP7200 achieved its one-millionth engine flight hour earlier this month.