▁high ▁as ▁ 3 3 0 kt . ▁The ▁A TR - 8 2 ▁project ▁( as ▁it ▁was ▁dub bed ) ▁was ▁susp ended ▁when ▁ ▁was ▁formed ▁in ▁early ▁ 1 9 9 6 . ▁▁ ▁A TR ▁Quick ▁Change ▁ ▁This ▁proposed ▁version ▁target ed ▁the ▁increasing ▁demand ▁of ▁world wide ▁cargo ▁and ▁express ▁mail ▁mark ets , ▁where ▁the ▁aim ▁is ▁to ▁allow ▁operators ▁to ▁supp lement ▁their ▁passengers ▁fl ights ▁with ▁fre ighter ▁fl ights . ▁In ▁Quick ▁Change ▁configuration , ▁the ▁smoke ▁det ector ▁is ▁equ ipped ▁alongside ▁other ▁modifications ▁required ▁in ▁order ▁to ▁meet ▁the ▁cert ification ▁for ▁full ▁fre ight ▁operations . ▁The ▁aircraft ▁was ▁equ ipped ▁with ▁a ▁larger ▁cargo ▁door ▁( 1 . 2 7   m ▁[ 5 0   in ] ▁wide ▁and ▁ 1 . 5 2   m ▁[ 6 0   in ] ▁high ) ▁and ▁low ▁door - s ill ▁height ▁of ▁an ▁average ▁ 1 . 2   m ▁( 4   ft ), ▁facil it ating ▁container ized ▁fre ight ▁loading . ▁It ▁takes ▁ 3 0 ▁minutes ▁to ▁convert ▁the ▁aircraft ▁on ▁A TR ▁ 4 2 , ▁while ▁for ▁A TR ▁ 7 2 , ▁it ▁takes ▁ 4 5 ▁minutes . ▁Each ▁optimized ▁container ▁has ▁ ▁of ▁us able ▁volume ▁and ▁maximum ▁payload ▁is ▁ 4 3 5   kg ▁( 9 6 0   lb ). ▁ ▁Major ▁operators ▁ ▁Civil ian ▁operations ▁As ▁of ▁July ▁ 2 0 1 9