Avtrician - I understand the suggested/legal side - but I don't understand the actual physical effects.
If I went diving to 60 feet and then sat on the beach for 24 hours - the pressure differential is MORE than diving to 30 feet and then flying home at 2,000 the same day, or morning after.
What I'm trying to understand is why doesn't a 60 ft dive and sit on the beach give me decompression sickness whilst I'm sat on the beach - if a 30 foot dive and 2,000ft cross country would affect me if I was in an aircraft.
The latter (30 feet down, 2,000 up is a lesser pressure diferenetial).
Keygrip scratches head again.
