Following is the data needed in the aircraft.cfg file for this effect to work.

Copy and paste ONLY the two lines below for the appropriate aircraft:
[SMOKESYSTEM]
smoke.0=3,XX.XX,XX.XX, fx_fallsw3.fx


//For the DC-3
[SMOKESYSTEM]
smoke.0=3,-17.86,-5.28, fx_fallsw3.fx


//For the DeHavilland Twin Otter
[SMOKESYSTEM]
smoke.0=3,5.86,-5.28, fx_fallsw3.fx


//For the Junkers JU-52
[SMOKESYSTEM]
smoke.0=3,-5.86,-5.28, fx_fallsw3.fx


//Mike Stone's C-130
[SMOKESYSTEM]
smoke.0=3,-17.86,-0.00, fx_fallsw3.fx