Re the CV 880
i wondered if these strange craft evr came to LHR because for many years my memory told me I saw a JAL 880 doing what would now be be done in a sim flying circuits to LHR while I was waiting for an infrequent bus in Hounslow High Street .
However I remembered the reg as JA8001 which was a DC8 although I always though ththe aircraft from the smoke and shape was a super rare 880.
CV 880 was hardly the ideal aircraft for LHr-Tokyo so did JAL really use them to LHR or not.
On the original topic quite a few of the early non fan 707s and DC8s used water meth and they certainly were smokey-as was the CV 990 with tits weird rear fan
PB