Freight sounds ?
Ok, I have a silly question.
In turbulence or bumpy air in a large freighter do you ever hear the freight pallets and or containers 'straining' against their locks.
I realise you probably wouldn't in the cockpit with the ambient noise but what if you are in the passenger area of the upper deck on the 747 for example or just behind the cockpit on other Aircraft .
Rather like the sounds containers make on a ship make in a heavy sea ?