The Missing Gold Bar
I am not sure what sort of research you are conducting but, if you're after humour in air cargo...
Once upon a time there was an airfreight warehouse at ###. ((insert appropriate IATA airport code here)), Said w/house was just a nissen hut ((broken down old hangar, converted cowshed, use your imagination)).
One day the Great Big Bank of E**land had to send some dusty gold bars to the Gnomes of Z*r*ch. So they load the glod bars into a "Blinks-Splat" truck & have them delivered to the Sw*ss**r airfreight w/house at ### airport.
Then up comes a bright shiny DCx aeroplane to fly the gold bars to the Gnomes. All the bars are carefully counted out from the warehouse and onto the aeroplane.
Great Balls of Fire !!!! there's a bar of glod missing. Hue & Cry, panic & trouser-dirtying ensues, and Mr Plod is called in to investigate.
The missing bar is never found, but no-one present ever turns up to work in a Rolls Canardly so no-one is ever arrested and the matter is closed as a complete unsolved mystery.
After many years of stirling service Sw*ss**r get a nice bright shiny new warehouse. They clear out the old warehouse and there is a final inspection. Bossman goes around with the keys shutting & locking all the doors. Finally he goes out of the airside pedestrian access door. It is a slightly emotional moment.
With a sigh he kicks the brick that has been holding the door open for so many years & falls to the ground screaming... He’s broken his toe !!!
And yes - the old brick turns out to be the missing gold bar from all those years ago....
This has been recounted to me, in various forms, where the prime candidates are SR at ZRH, PA & TW at Idlewild, AF at Orly, KLM at SPL etc etc always set in the mid 1950’s
AHHHH you don't mean that sort of research....