Ahh the rules and regs!
"Will permit" - during the operation right up to the event of the emergency arising, it probably did. Nobody here has any idea yet of the nature of the emergency that arose.
"Undue" - Excessive - as compared to what? A petrol tanker driving into the same place?
"Hazard" - used as a Noun, Literary Noun or Verb?
I am not defending anything, just pointing out that the legal fraternity will have a field day here.
I guess Flying Lawyer can't comment any more on this type of thing due to his current position.