http://www.atsb.gov.au/publications/investigation_reports/2017/aair/ao-2017-032/
I'm not an engineer (perhaps just as well), but what I can see of the corrosion on the bore of the dowel hole wouldn't really run up any red flags if I'd seen it prior to the incident.
Last edited by spinex; 13th Apr 2017 at 02:22.