I'm a member of COO for about 4 years. I remember to have read about a subject concerning a motor fan that is connected in-line with the 3 inches inlet ducting to force the cold air through the muffler shroud and giving good heat inside of the cabin, especially when the plane is idling. I would like to know if somebody remember the magazine vol. & number, or any contact about a person or STC who has developped that device.

Thanks