0 0 B ▁Com bi ▁and ▁one ▁Mc D onn ell ▁Douglas ▁DC - 1 0 - 3 0 ▁served ▁a ▁route ▁network ▁that ▁included ▁Ab u ja , ▁Cal ab ar , ▁Dou ala , ▁Dub ai , ▁Jed d ah , ▁Jos , ▁K ad una , ▁K ano , ▁Kin sh asa , ▁Lag os , ▁Lib re ville , ▁London , ▁Ma id ug uri , ▁Mal ab o , ▁Port ▁Har court , ▁S ok oto ▁and ▁Y ola . ▁A ▁fleet ▁that ▁had ▁number ed ▁ 3 2 ▁aircraft ▁in ▁ 1 9 8 4 ▁had ▁gradually ▁reduced ▁to ▁just ▁three ▁aircraft ▁in ▁October ▁ 2 0 0 0 . ▁The ▁United ▁Kingdom ▁c ited ▁safety ▁concerns ▁again ▁in ▁ 2 0 0 1 ▁when ▁it ▁refused ▁to ▁allow ▁Niger ia ▁Air ways ▁to ▁operate ▁the ▁Lag os – Lond on ▁route , ▁this ▁time ▁regarding ▁the ▁Bo eing ▁ 7 4 7 ▁that ▁was ▁le ased ▁from ▁Air ▁Dj ib out i ▁to ▁fly ▁the ▁route . ▁That ▁year , ▁the ▁I FC ▁with d rew ▁from ▁its ▁advis ory ▁position ▁cit ing ▁the ▁unw illing ness ▁of ▁both ▁the ▁company ▁and ▁the ▁government ▁to ▁carry ▁out ▁the ▁necessary ▁measures ▁that ▁would ▁make ▁the ▁air line ▁attract ive ▁to ▁potential ▁invest ors . ▁Later ▁on , ▁there ▁were ▁various ▁alleg ations ▁claim ing ▁the ▁air line ' s ▁failure ▁was ▁acceler ated ▁by ▁former ▁Niger ian ▁r ul ers ▁who ▁lo oted ▁and ▁mis managed ▁the