▁on ▁Human ▁Space ▁System ▁Fl ight ▁Test ing ▁reported ▁an ▁oper ational ▁gl itch ▁of ▁the ▁K v ant - V ▁equipment . ▁The ▁K v ant - V ▁system ▁res ides ▁in ▁the ▁Inst rument ation ▁Prop ulsion ▁Module ▁– ▁one ▁of ▁the ▁three ▁modules ▁that ▁make ▁the ▁So y uz ▁T MA - 2 1 ▁space craft . ▁On ▁March ▁ 1 3 , ▁Ros cos mos ▁Board ▁held ▁a ▁meeting ▁to ▁discuss ▁the ▁issue ▁and ▁delayed ▁the ▁launch ▁from ▁March ▁ 3 0 , ▁ 2 0 1 1 . ▁The ▁gl itch ▁was ▁trac ed ▁back ▁to ▁a ▁fault y ▁part ▁( cap ac itor ) ▁in ▁the ▁equipment . ▁Russian ▁Space ▁Agency ▁Ros cos mos ▁established ▁a ▁working ▁group ▁with ▁represent atives ▁from ▁R SC - E ner gia ▁and ▁T S NI Im ash , ▁the ▁manufact ur ers ▁and ▁developers ▁of ▁the ▁So y uz ▁systems . ▁Pro pos als ▁of ▁the ▁working ▁group ▁were ▁considered ▁during ▁an ▁additional ▁General ▁Design ers ’ ▁Review ▁led ▁by ▁R SC - E ner gia ▁president ▁V ital y ▁L op ota . ▁After ▁analyz ing ▁the ▁submitted ▁data ▁by ▁the ▁Review , ▁Ros cos mos ▁decided ▁to ▁set ▁April ▁ 4 ▁as ▁the ▁new ▁launch ▁date . ▁ ▁Pre - launch ▁processing ▁▁ ▁The ▁So y uz ▁T MA - 2 1 ▁space craft ▁arrived ▁at ▁Ba ikon ur ▁Cos mod rome ▁on ▁February ▁ 9 , ▁ 2 0 1 1 . ▁On ▁the ▁same ▁day ,