I don't think Hanlon's razor should be applied to multi-billion dollar corporate persons. Private individuals, even small to medium sized institutions with limi

I don't think Hanlon's razor should be applied to multi-billion dollar corporate persons. Private individuals, even small to medium sized institutions with limited resources and unproven levels of competence, are fair applicants to Hanlon. But a) Boeing is typically a hyper competent corporate person, having executed massive, multi-decade engineering projects that have been largely successful, and b) regardless of (a), the disappearance of a very specific piece of technical evidence while in the possession of the potentially liable party, while the rest of the evidence is successfully delivered, is not adequately explained by incompetence.