And it was, according to
www.acig.org (Air Combat Information Group website). The "Mig Eater" destroyed it on the ground though.
Regarding the Falklands conflict, the last RAF air-to-air kills were three Argentine Skyhawks, by Sea Harriers on June 8, 1982.
The Phantom-Jaguar incident over Germany happened two weeks earlier.
http://www.acig.org/artman/publish/article_303.shtml
http://www.acig.org/artman/publish/article_158.shtml