Yes, 9J is Zambian.
I flew this a/c a few years ago, so I'm sorry to hear about this, although it was about time the old lady retired.
Glad to hear that there were no injuries.
Zambia has had its fair share of incidents and accidents over the last 24 months. I have my own opinion as to why this is, but I think its best left unsaid.
Cheers
JF