 The change in orientation impacted Tijuana's approach over Cerro San Isidro, a 2,600 foot (800 meter) land obstacle which increased the east approach glide slope above 3 degrees and prevented a full Instrument Landing System (ILS approach) on the 27 runway required during foul weather landings.Due to prevailing winds, the 27 runway is Tijuana's main approach pattern.The construction of the new terminal and a 2.5 kilometer 09-27 runway to accommodate larger aircraft was finished in July 1970 and inaugurated on November 19, 1970, by then-President Gustavo Diaz Ordaz and Gilberto Valenzuela Ezquerro, Secretary of Public Works.