ASFKAP, thanks for the idea
Yes there is a large single unit fan for cooling and seems to me if it could do with a grup of smaller ones like on the airbus. But hay you cant really compare like for like in this case
We have replaced the co-pilot tube and wx tube as well, various other electronic items but sadly no help.
Yes, the idea of a cooling issue is good, but, this problem occurs as mentioned at all stages of flight and even while the crew are on the ground taxing to stand. Naturally they are fed up and need to have it fixed, we have even bought new inverter to swap.
Think maybe its a case of wiring loom next....... ahhhhh
Thanks
Mr W