Excerpt of executive summary from "Aviation growth and global warming"

The study compilers have assembled all current fuel-efficiency programmes underway by airlines, manufacturers, airports and air traffic control organisations to look at what level of carbon dioxide savings are possible through current and future fuel-saving initiatives especially in the near-term, between 2007 and 2015 – when a new generation of more fuel-efficient aircraft and engines will probably be available. Using the widest range of sources available the following CO2 emission reductions have been calculated against actual and potential aviation emission improvements.

Emission improvement programmes - underway

Emission improvement programmes Total tonnes of CO2 emissions saved per year
Technical insertion programmes to current generation engines 210,600
Equipping fleets with new more efficient aircraft types 1,240,000
Lighter interior structures, fittings 5,840,000
More accurate flight planning 350,000
Airspace redesign – IATA work on shorter routes 14,000,000*
Introducing CNS/ATM concepts 3,050,000
Total 24,690,600

Emission improvement programmes - potential

Emission improvement programmes Total tonnes of CO2 emissions potentially saved per year
Adding winglets and making minor aerodynamic improvements to current aircraft types 585,160
Equipping fleets with more fuel-efficient aircraft 1,436,102*
MRO improvements 1,265,090
Replacing APUs with GPUs and frequency converters 610,000
Introducing continuous descent approaches 2,100,000
More efficient airport taxiing operations 6,205,000
Total 12,201,352

* This represents the full potential of CO2 savings if current expenditure patterns on new aircraft continue.