Photo © Andries Cafmeyer
It is very visible that the engine looks much more like the GE CF6-50E2 engines also offered for classic 747s than the "standard" JT9D engine seen here:
Photo © Craig Murray
What is the story of the JT9D-70? was it a special engine option that simply turned out to be unsaleable? I know that SAS and Air Madagascar also had 747s with the JT9D-70 engine!
Thanks for any info