Aviation Featured TransportBi-Courtney insists on 36 years concession validity on MMA2EditorMarch 6, 2019March 6, 2019 by EditorMarch 6, 2019March 6, 20190607 By Abisola THOMPSON Bi-Courtney Aviation Services Limited (BASL), operator of the Murtala Muhammed Airport Two (MMA2), on Tuesday insisted that it had 36 years validity