Left engine Garrett TFE731-2. Purpose of the cable installed between engine and wing is unknown to me, it is not installed on right hand engine and also I had never seen it on any civil example of Falcon 10.
Rotor assembly with center bearing box on engine Tumanskij M-11. Three stage low pressure compressor is driven by single stage low pressure turbine. Three stage high pressure compressor is driven by single stage high pressure turbine. Tubes on bearing box serve transfer cooling air to the high pressure turbine disc.
