OK Fairchild Swearingen Metroliner

Aircraft info:
https://en.m.wikipedia.org/wiki/Fairchild_Swearingen_Metroliner

Engine:
Metro, model III, 23 (IV)
Garret TPE331-11U
https://en.m.wikipedia.org/wiki/Garrett_AiResearch_TPE-331
http://wiki.scramble.nl/index.php/Garrett_TPE331