Not sure if well known but this was posted in dripline...
A safety bulletin released on February 21st from the UK’s Arboricultural Association outlines a fall from height accident due to
Looks like an older model in the picture I saw on Facebook. I mean I dunno what the lifespan is on those, I've never owned one, but it looked like a well uses zig zag, someone correct me if I'm wrong hereI have no idea. But you can't have a spring failure on a part that never had a spring. Smells pretty damn fishy, to me.
For reference sake, Your zz was made in June of 2019. The first two numbers are the year the letter corresponds with the month A is Jan B is Feb...I think the labeling in the pictures is misleading. I just looked at my ZZ, and the only part with a spring is the release lever at the upper end. There's a similar piece on the next link down that moves, but it doesn't have a spring. All the other parts that come in contact with the rope appear to be fixed rigidly to the rivets that hold the chain together.
Mine has SN 19F019... It was purchased new in 2019. The one in the report has SN 18d013...
I can't wait to see the full explanation from Petzl.