BBA Aviation plc is realigning the leadership in its various aviation units with the appointment of Maria Sastre as president and COO of Signature Flight Support and Pat Pearse as managing director of BBA Aviation Flight Support Europe, Middle East and Asia (EMEA). Both Sastre and Pearse report to S. Michael Scheeringa, who has become president and CEO of BBA Aviation's Flight Support division, which includes both Signature and Aircraft Service International Group (ASIG). Sastre, who joined the chain in 2009 as COO, will be responsible for the daily operations of Signature's network of fixed-base operations and maintenance centers.

Before joining Signature, she was with Royal Caribbean Cruises. Pearse will be responsible for oversight and management of 17 Signature Flight Support and ASIG locations in the U.K. and Europe. He joined ASIG in 2010.

The company also recently named Doug Meador president of Dallas Airmotive and Mark Taylor managing director of H+S Aviation.