Just to get the facts straight.
The route MSA was FL160, For descent below this there were four conditions that had to be met, none were. the minimum descent for any reason was 6,000ft, this was a mandatory requirement laid down by CAA before these flights could commence. The impact point was 1500ft, Yet according to Mahon the crew were blameless. The official accident report compiled by Accident Investigation professional only stated a probable cause, This probable cause was accepted by many with much experience in Aviation..