The Black hanger is still there. Well its steel frame is. Back in the early 80?s I worked for BCP Architects and one of our clients was Macrae and Dick, we did a lot of work for them all over the north. One job was to convert the hanger into a furniture warehouse, we stripped off the black cladding and built offices & toilet accommodation. A 2 metre high concrete wall was built around the base of the hanger and the roof and upper walls were re-clad in brown steel sheet. From the google street view it looks like it?s been refurbished since then, but I?m sure it?s the same building I worked on. Highland Quality Construction are currently using it.