Diaz Has

Mario Diaz was the Executive Director of the Houston Airport System (HAS) at the City of Houston, a position he held from 2010 until his abrupt resignation in February 2024.

Here are some key points about his career and tenure:

Background and Career

• Diaz joined the Houston Airport System in 2010, appointed by former Mayor Annise Parker. Before this, he worked at the Port Authority of New York and New Jersey and later as the Deputy Director General at Hartsfield-Jackson Atlanta International Airport.4

Achievements

• During his tenure, Diaz oversaw significant improvements and expansions at Houston's airports, including the return of international air service to William P. Hobby Airport in 2015 and the growth of global partnerships with foreign flag carriers. He aimed to transform Houston Airports into a 5-Star global air service gateway, focusing on passenger experience, operational excellence, and sustainability.24

Controversies and Resignation

• Diaz was the subject of several investigations by KPRC 2 Investigates, focusing on controversial hires, mismanagement of major construction projects, and potential conflicts of interest. Notable cases include the hiring of his girlfriend, Maricela Kruseman, and the involvement of City of Houston Chief Development Officer Andy Icken's son-in-law, Roger Hebert, in airport contracts.15
• His resignation was confirmed by Mayor John Whitmire’s administration, with Whitmire stating a need for change and improved operations at the airports. Jim Szczesniak, the Chief Operating Officer, was named as the Interim Director of HAS following Diaz's departure.13

Post-Resignation

• After his resignation, Diaz had already created his own private limited liability corporation, MCDAero LLC, in November 2022, which was noted during the investigations into his activities while still in his public role.1