I just filed a MESS report and a report to Estes on yesterday’s motor cato. The motor was a B4-2. It blew through the ejection end. Casing and nozzle remained intact. The date code on the casing was A090412.
I was looking at the one previous time I had a cato and reported it, two years ago. That was an Estes E9-6, and it blew out the nozzle. So not very similar.
Except the date code was 09 04 12.
Coincidence? Yeah, probably.