Does anyone remember the PanAm Mx hangar next to the Hunting hangar on the south side of LHR ? There was a cafe (Kaff) also painted blue for the workers amongst others and you could just wander in there and partake of the offerings as a paying customer. I can remember going up to a B707 sticking out of the hangar in Biman colours, no reg and kicked the tyres (as you do). It didn't end well for my toes only protected by a thin layer of plastic leather trainers. When you consider the security nowadays, it was nearly nonexistent back then!