Instruments are borrowed from these aircrafts:

Stick, Pedals, ADI, HSI, Accelerometer & AO-gauge: Fairchild A-10
Litle ASI: Aermacci MB-339PAN
Propeller, Altimeter, Clock, ASI, VSI, RMI-vor-adf: Beechcraft B1900D
VOR, ADF, COMM-receivers,  DME and Turn-Indicator: generic 3d Instruments
Engine controls: de Havilland Twin Otter DHC6