Information On Cutting Gable End Studs

Question: 

Is there any information relating to the cutting of gable studs in the field to place a louver or a window over a gable trussed end wall?

Answer: 

We are not aware of any guidance or rules of thumb to provide to a carpenter regarding when it’s ok to cut gable studs in a truss to place a louver or window. They should consult the truss manufacturer or an engineer.