This document confirms that Mr. Tsvetanov Borislav worked as certifying staff (A, B1) for line maintenance and troubleshooting on various aircraft from August 14, 2015 to September 13, 2015 at the Lyon station for Aviacare France. It lists the aircraft models he was certified to work on, which include Airbus and Boeing aircraft with different engine types. The quality manager of Aviacare France, Geoffrey Moreau, signed the document on September 25, 2015 in Roissy, France.