Caz,
would Mr Crabtree's evidence to the BoI be
after he had walked back up from the lighthouse, because he definately stated that it was clearer down by it.
Likewise, Mrs Crabtree does not specify where she is standing - Lighthouse, where her husband says it is clearer, or futher up, where we all agree was covered in cloud.
Apologies for answering on behalf of Chug, but is this the document you seek:
Chinook crash: critical internal memo on software flaws | 4 Jun 2009 | ComputerWeekly.com
Kind regards,
Brian
"Justice has no expiry date" - John Cook