MEXICO CITY, April 1 /PRNewswire-FirstCall/ -- Grupo Aeroportuario del Sureste, S.A.B. de C.V. (NYSE: ASR; BMV: ASUR) (ASUR), today announced that it received approval from the Ministry of Communications and Transportation for the Master Development Programs for each of its concessions for the years 2009 through 2023 and the efficiency factor applicable and the maximum tariffs per work load unit for the years 2009 through 2013. One work load unit equals one passenger or 100 kg of cargo. Master Development Programs Expressed in millions of constant pesos as of December 31, 2008 Airport 2009-2013* 2014-2018** 2019-2023** Cancun 2,413.7*** 1,207.5**** 793.9 Cozumel 117.6 121.5 89.6 Huatulco 343.4 71.9 48.1 Merida 304.2 125.5 82.5 Minatitlan 59.5 59.8 36.7 Oaxaca 309.4 67.1 85.1 Tapachula 60.1 42.0 20.5 Veracruz 792.8 136.5 170.1 Villahermosa 332.3 257.3 56.1 * Committed investment ** Indicative investment *** As of December 31, 2008 ASUR has invested Ps. 1,054.8 million (which is included in the investment commitments for this period shown above) **** As of December 31, 2008 ASUR has invested Ps. 612.9 million (which is included in the indicative investment for this period shown above Committed Investments Expressed in millions of constant pesos as of December 31, 2008 Airport 2009 2010 2011 2012 2013 Cancun 582.0 625.0 424.5 447.6 334.6 Cozumel 17.5 42.1 14.2 33.7 10.2 Huatulco 52.9 151.0 70.4 59.3 9.8 Merida 80.8 128.2 72.8 16.3 6.1 Minatitlan 20.6 24.9 6.6 3.6 3.8 Oaxaca 48.1 139.0 62.0 42.5 17.8 Tapachula 7.6 5.7 4.7 2.5 39.7 Veracruz 48.1 310.1 248.0 119.0 67.6 Villahermosa 45.9 163.6 81.4 6.6 34.8 As of December 31, 2008 ASUR has invested the following amounts at Cancun airport: Expressed in millions of constant pesos as of December 31, 2008 Airport 2009 2010 2011 2012 2013 Cancun 211.0 211.0 211.0 211.0 211.0 The Master Development Plan for Cancun Airport has accounted for these investments and includes these amounts in the investment commitments for the periods shown above. The Master Development Plans were approved before the execution of the project denominated Riviera Maya Airport, which is included in the National Infrastructure Plan for 2007-2012. Therefore, the Ministry of Communications and Transportation did not account for any effects related to operations at the Riviera Maya Airport on projected passenger traffic levels for Cancun airport. The eventual construction, administration and operation of the Riviera Maya Airport, and the beginning of flight operations there, could affect traffic levels at Cancun airport. Accordingly, within three months as from the granting of a concession to operate the Riviera Maya Airport, the Ministry of Communications and Transportation has committed to modify the Master Development Plan in accordance with the new passenger traffic level projections, and to adjust the investment obligations and maximum tariffs that we are authorized to charge. Maximum Tariffs per Work Load Unit Expressed in constant pesos as of December 31, 2008 Airport Maximum Tariff Cancun 134.03 Cozumel 185.88 Huatulco 120.71 Merida 125.04 Minatitlan 214.38 Oaxaca 132.76 Tapachula 246.22 Veracruz 112.06 Villahermosa 117.07 The concession agreements for each airport provide that such airport's maximum rates will be reduced annually to account for projected improvements in efficiency. For the five-year period ending December 31, 2013, the maximum rates applicable to ASUR's airports will be reduced by an annual efficiency factor of 0.70% in real terms. The Company is currently evaluating the figures approved by the Ministry of Communications and Transportation. About ASUR: Grupo Aeroportuario del Sureste, S.A.B. de C.V. (ASUR) is a Mexican airport operator with concessions to operate, maintain and develop the airports of Cancun, Merida, Cozumel, Villahermosa, Oaxaca, Veracruz, Huatulco, Tapachula and Minatitlan in the southeast of Mexico. The Company is listed both on the Mexican Bolsa, where it trades under the symbol ASUR, and on the NYSE in the U.S., where it trades under the symbol ASR. One ADS represents ten (10) series B shares. Some of the statements contained in this press release discuss future expectations or state other forward-looking information. Those statements are subject to risks identified in this press release and in ASUR's filings with the SEC. Actual developments could differ significantly from those contemplated in these forward-looking statements. The forward-looking information is based on various factors and was derived using numerous assumptions. Our forward-looking statements speak only as of the date they are made and, except as may be required by applicable law, we do not have an obligation to update or revise them, whether as a result of new information, future or otherwise. DATASOURCE: Grupo Aeroportuario del Sureste, S.A.B. de C.V. CONTACT: Lic. Adolfo Castro, ASUR, +52-55-5284-0408, ; Susan Borinelli, +1-646-452-2333, , or Maura Gedid, +1-646-452-2335, , Breakstone Group

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