to develop over the service life after the airplane was returned into passenger use. there was no proper inspection procedure, as well. >> as jal 123 passes through 24,000 feet, cracks begin to connect between the rivets, leading the bulkhead to fail catastrophically. it's a structural failure due not to bad airplane design but to a faulty repair and inadequate oversight. >> when we look back at structural failures, how common is it that it's repair or maintenance related? >> it pains me to say this, but it's more and more we're finding repair related. >> there were at least two suicides in the wake of this incident. a japan airlines employee, who was working with victim's families, and an inspection engineer, who issued a certificate of airworthiness for