I've searched youtube daily for any mention of this episode for years now. The only uploads on youtube are of the dubbed versions. It also does not help that there's also a children's book with the same title. And it absolutely floods my results whenever I try to look for the episode.
During my searching tonight, I found this blog post which mentions that 80s AATC also aired on Channel 5 and Cartoon Network in the UK. Can't back that up as of now. Cartoon Network is one of the channels the syndicated episodes were rerun on in the US in the 90s, but I haven't seen anything recarding UK CN specifically. The screenshots look just like the CN US versions (Which were terrible. We abandoned them the second the Teletoon Retro ones became available). Been skimming through scans of old tv guides to find any mention of it. Even if these channels did air the series it's hard to tell if they would have aired all the episodes or not.
I have been in the AATC fandom for over a decade and I'm baffled that this episode hasn't surfaced by now...
Hopefully a lost media YouTuber content creator covers it...
When I'm a bit more financially stable I might send someone some support through patreon and see if I can get a request in.
I'm thinking about making a video on the topic myself too. But I'm not sure what good it'll do. My channel is only really popular within the AATC fandom.