IATA iFlex trial gets underway

16th Sep 2011
IATA iFlex trial gets underway

The International Air Transport Association (IATA) announced the successful completion of the first iFlex trial between Johannesburg and Atlanta. The iFlex concept provides for a greater and more flexible choice of routes on long-haul operations which cross multiple flight information regions to deliver shorter flight times, improved, fuel efficiency and reduced CO2 emissions while maintaining safety.

With iFlex airlines will be able to fly more optimum routings that take maximum advantage of wind conditions. While airlines have long planned flights considering wind conditions, air traffic management restrictions often limited flexibility within fixed corridors on parts of routings. The innovation that iFlex brings is the flexibility to extend this practice consistently across the entire journey.

Delta Air Lines reported that the implementation of the iFlex concept between Johannesburg and Atlanta resulted in average time saving per flight of 8 minutes, equating to 900 kg of fuel and 2.9 tonnes of CO2. Annualized and on the basis of two daily flights, this translates to savings of some 100 hours of flight, 690 tonnes of fuel and a reduction of 2,150 tonnes of CO2 emitted.

A more flexible routing structure also provides a safety benefit in that airlines have more options to avoid adverse weather. Routing decisions can be taken at the planning stage to avoid potential tactical en-route deviations that can significantly increase controller and pilot workload. The additional benefit of leveraging route flexibility to avoid weather is that it also can reduce the need for carriage of contingency fuel.

“This initiative demonstrates just what can be achieved when we work together as an industry to reduce aviation’s impact on the environment while at the same time enhancing efficiency and safety,” said Guenther Matschnigg, IATA Senior Vice President, Safety, Operations and Infrastructure. “We look forward to future successes based on this first trial.”


The iFlex implementation did not change existing air traffic management procedures, separation standards or communication, navigation or surveillance requirements. In certain areas, short cuts (direct routings) given by different air traffic control authorities, on a day-to-day basis, were formalized. This formalization provides better situational awareness for all airspace users.


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