AVSIM Library
3Xtrim
3XTrim
3XTRIM FAA N-Number Database
File:3Xtrim 450 Ultra SP-YML, Gliwice 2017.06.03 (02).jpg - Wikimedia Commons
3XTRIM FAA N-Number Database
Facilities
AVSIM Library
AVSIM Library
Mytrueancestry.com, Page 167
AVSIM Library
File:Borislav Mitic.jpg - Wikimedia Commons