Welcome Waken !!!
As I remember Avia BH-33E was like Avia BH-33L. The difference between them was an engine.BH-33E was equipted with Jupiter VI or VII and BH-33L with Skoda L. The plane was exported to Poland,Yougoslavia,USSR and Spain. In Poland Avia was licence-built as PWS-A. Looking for information about bomd load I didn't find anything. The available photos of BH-33 or PWS-A show that they didn't carry any bombs.