1984 Topographical Aeronautical chart. Of interest is the Jurby bombing range, very active with military aircraft from the RAF and USAF, Tornados, Buccaneers and F111s being the most common users. They didn't usually contact Ronaldsway (USAF aircraft had no VHF radio) but called Jurby Range Control directly
 1980s ATC Pages
 
An Island Images picture © Jon Wornham