My second trip across the North Atlantic was in an SAS DC8 from CPH-YUL-ORD.

Sadly, it was in Y then. But Y was bearable then, and I was only 17 at the time.

Business Class was invented another 10 years later.

Many years later, when I frequently flew UA's DC8's, and knowing that some of them originated with SAS, I wondered if any were the same plane....