▁The ▁Jet ▁S qual us ▁was ▁power ed ▁by ▁a ▁Gar rett ▁T FE 1 0 9 ▁tur bo fan ▁with ▁engine ▁int akes ▁in ▁above ▁the ▁wing ▁root . ▁The ▁prototype , ▁registered ▁I - S Q AL , ▁first ▁fle w ▁on ▁ 3 0 ▁April ▁ 1 9 8 7 . ▁The ▁aircraft ▁was ▁fitted ▁with ▁four ▁under wing ▁hard ▁points ▁for ▁dispos able ▁stores ▁to ▁allow ▁weapons ▁training . ▁ ▁Oper ational ▁history ▁ ▁With ▁the ▁dem ise ▁of ▁the ▁similar ▁American ▁Fair child ▁T - 4 6 ▁tra iner ▁in ▁ 1 9 8 6 ▁the ▁support ▁for ▁the ▁engine ▁disappeared ▁and ▁it ▁was ▁planned ▁to ▁re - engine ▁with ▁the ▁Williams - R oll s ▁F J 4 4 . ▁The ▁aircraft ▁was ▁exhib ited ▁at ▁the ▁F arn borough ▁Air ▁Show ▁in ▁September ▁ 1 9 8 8 , ▁but ▁the ▁project ▁fol ded ▁and ▁Prom avia ▁went ▁bank rupt ▁in ▁ 1 9 9 8 . ▁An ▁un flow n ▁second ▁prototype ▁was ▁to ▁be ▁modified ▁for ▁air line ▁pilot ▁training , ▁and ▁the ▁un fin ished ▁third ▁prototype ▁was ▁to ▁be ▁press ur ised . ▁ ▁Vari ants ▁F 1 3 0 0 ▁N GT The ▁bas eline ▁jet ▁tra iner ▁version ▁of ▁the ▁Pro ca er ▁Cob ra ▁line age . ▁ ▁F 1 3 0 0 ▁AWS - MS / S AR Pro posed ▁Mar itime ▁surve ill ance / search ▁and ▁rescue . ▁F 1 3 0 0 ▁AWS - R