I have flown on CO's 747's on FRA-EWR-FRA in July 1993, but my memories of this event are somehow limited.
From what I remember, our departure from FRA (onboard Fleetno. 021 already in the current color scheme) was delayed for almost an hour, but since we cruised at Mach 0.84 or 0.85 (according to the FO's information), we made it to EWR just in time. The aircraft had been repainted into CO's current paintscheme and featured an interior, which resembled the current one of the DC-10 fleet (concerning seat model and choice of color for cabin walls and seats).
The interior was clean and tidy, but there was no moving map display available inflight whatsoever, and the movie was presented by using the conventional display with no TV monitors in the aisles or PTV available at the time.
Seat configuration was 2-5-2 or 3-5-2, but I could be wrong about that. Overall, economy seating was a little less cramped compared to nowadays' transatlantic DC-10 service.
Upon arrival, there were two other CO 747's at the international arrivals building, one of them still in the older golden colors.
The return trip was on 017, which was still in its original three-window upper deck 747-100 configuration, but also already repainted into new colors.
Although I now know about the difficult period of time CO was going through in 1993, I really cannot comp[lain about the service offered on my flights with them at that time.
Hope this helps!
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