The worst thing about Wings was that it repeated the same programme cycle every 3 hours, round and round. So if you came back to it later in the day, you'd very likely seen the programme earlier.
Towards the end, there was a substantial amount of programmes on it which were nothing to do with aviation - I remember watching a fair few "monster machine" type documentaries on Wings and as interesting as 100 ton diggers are, they hardly qualify as having wings.