▁" Sp ell out ", ▁" Pe ace ▁Ruby " ▁and ▁" Pe ace ▁Net " ▁program mes ▁to ▁improve / up grade , ▁the ▁air - def ence ▁system ▁of ▁Iran . ▁As ▁well ▁as ▁air ▁defence ▁rad ars , ▁the ▁network ▁was ▁linked ▁using ▁mic row ave ▁L OS ▁and ▁tro pos c atter ▁communic ations ▁networks . ▁ ▁The ▁II AF ▁had ▁also ▁placed ▁an ▁order ▁for ▁over ▁ 1 5 0 ▁F - 1 6 ▁Fight ing ▁Fal con ▁f ighter ▁aircraft ▁in ▁ 1 9 7 6 , ▁but ▁deliver ies ▁were ▁never ▁made , ▁due ▁to ▁the ▁over throw ▁of ▁the ▁Shah ▁by ▁Ay atol lah ▁Kh omen i ▁in ▁the ▁revolution . ▁These ▁aircraft ▁would ▁go ▁on ▁to ▁serve ▁in ▁the ▁Isra eli ▁Air ▁Force . ▁ ▁Post - I sl am ic ▁Revolution ▁The ▁over throw ▁of ▁the ▁Shah ▁in ▁the ▁Islam ic ▁Revolution ▁of ▁February ▁ 1 9 7 9 , ▁was ▁followed ▁by ▁changes ▁to ▁the ▁organization ▁of ▁the ▁Iran ian ▁military . ▁The ▁air ▁force ▁was ▁renamed ▁the ▁Islam ic ▁Republic ▁of ▁Iran ▁Air ▁Force ▁( I RI AF ), ▁and ▁largely ▁inherited ▁the ▁equipment ▁and ▁structure ▁of ▁the ▁former ▁II AF . ▁Due ▁to ▁stra ined ▁relations ▁with ▁the ▁west , ▁Iran ▁had ▁to ▁proc ure ▁new ▁equipment ▁from ▁Brazil , ▁the ▁Soviet ▁Union / Russ ia ▁and ▁the ▁People ' s ▁Republic ▁of ▁China . ▁ ▁However , ▁it ▁lost ▁most ▁of ▁its ▁leading ▁officers ▁in ▁the ▁course ▁of ▁post