Aviation Featured TransportBi-Courtney signs 36 years concession agreement with FG on MMA 2 – SpokespersonEditorMarch 8, 2019 by EditorMarch 8, 20190635 By Giwa SHILE Bi-Courtney Aviation Services Limited (BASL) says it has 36 years concession agreement with the Federal Government for the Build, Operate and Transfer