▁Ash ok ▁N ay ak , ▁who ▁spoke ▁on ▁the ▁record ▁as ▁H AL ' s ▁chairman ▁before ▁ret iring , ▁explained ▁that ▁the ▁I AF ▁have ▁required ▁ 4 0 – 4 5 ▁improvements ▁made ▁from ▁the ▁PA K - FA ▁to ▁meet ▁Indian ▁needs . ▁These ▁changes ▁were ▁then ▁formally ▁agreed ▁upon ▁between ▁India ▁and ▁Russia . ▁ ▁There ▁is ▁app reh ension ▁that ▁the ▁F G FA ▁would ▁significantly ▁exceed ▁its ▁current ▁$ 6 ▁billion ▁budget , ▁because ▁this ▁figure ▁reflect s ▁the ▁exp end iture ▁on ▁just ▁the ▁basic ▁aircraft . ▁Cru cial ▁av ion ics ▁systems ▁would ▁cost ▁extra . ▁The ▁Russian ▁and ▁Indian ▁air ▁forces ▁each ▁planned ▁to ▁purchase ▁about ▁ 2 5 0 ▁F G F As , ▁at ▁an ▁estimated ▁$ 1 0 0 ▁million ▁per ▁f ighter ▁for ▁an ▁$ 2 5 ▁billion ▁total , ▁in ▁addition ▁to ▁the ▁development ▁costs . ▁ ▁By ▁October ▁ 2 0 1 2 , ▁India ▁had ▁cut ▁its ▁total ▁purchase ▁size ▁from ▁ 2 0 0 ▁to ▁ 1 4 4 ▁aircraft . ▁ ▁India ' s ▁initial ▁invest ment ▁had ▁grown ▁from ▁$ 5 ▁billion ▁to ▁$ 6 ▁billion , ▁and ▁the ▁estimated ▁total ▁programme ▁cost ▁had ▁grown ▁to ▁$ 3 0 ▁billion ▁in ▁ 2 0 1 2 . ▁ ▁In ▁ 2 0 1 3 , ▁it ▁was ▁revealed ▁that ▁the ▁Russian ▁and ▁Indian ▁f igh ters ▁would ▁be ▁using ▁the ▁same ▁av ion ics . ▁Alexander ▁F omin ▁said ▁that ▁" B oth