Klm crew actually stood on the roof of a 747 in guatemala about 20 years ago. They were reprimanded.
https://krant.telegraaf.nl/krant/arc...rsgaanuit.html
Second: 2 747’s that were decommissioned 2 weeks ago are being re-instated and are now flying between schiphol and china as cargo haulers. They are combi-airframes.