ASUR updates about impact of Grupo Mexicana's suspension of operations

Mexicana, Aerovias Caribe and Mexicana Link ("Grupo Mexicana"), which operated in all of ASUR's airports with the exception of Tapachula, represented 10.88% of the Company's revenues for the eight month period ended August 31, 2010, primarily from domestic passengers.

ASUR estimates that Ps.132.54 million in accounts receivable could be at risk of not being recovered as of August 31, 2010. As a result, during the third quarter of fiscal year 2010 ASUR will make corresponding provisions for each of the three companies through which Grupo Mexicana operated.

ASUR believes that the majority of the routes operated by Grupo Mexicana were also operated by other carriers and thus the ultimate impact from the suspension of operations will not be in the same proportion as the number of flights cancelled. However, the Company cannot be sure that competing carriers will seek to increase their flight schedules or of the impact that this could have on the Company's business and results of operations, which could be adversely affected if traffic does not migrate to its other airline customers.

Below is a table with the number of routes operated by Grupo Mexicana before its suspension of operations on August 28, 2010 and the number of other airlines currently flying each of those routes.