There have been a lot of posts concerning sloppy cutting of window and door openings such that the rivets either miss or just catch the aluminum. Since the rivets are hand bucked, it would seem to me that when the bucker sees this happening he/she should stop the process right there. At the very least, a longer rivet with a washer should be used. The goof certainly isn't invisible to the original bucker.
Maybe Airstream needs an in-process inspection before the inside skin is installed to catch these goofs.
John W. Irwin
2005 Classic 28 "Sabre-Dog III"
2013 Silverado 2500HD Duramax/Allison LTZ
WBCCI #9632, TAC TX-10