I was thinking about weight, but the cowlings are pretty small compared to other parts of the plane where composite materials are used. So i'm not sure a single

I was thinking about weight, but the cowlings are pretty small compared to other parts of the plane where composite materials are used. So i'm not sure a single digit saving in pounds of fuel per hour or flight was a good tradeoff considering the risks associated with the alternative they went with. But, like someone else said this here, I would love someone with knowledge about this to chime in.