American International Group (AIG) said Thursday it plans to repay in full its debts to U.S. taxpayers. AIG said it would pay back the Federal Reserve Bank of New York’s $20 billion loan by the end of the first quarter of 2011. Other debt payments include $26 billion in two special purpose vehicles that hold its AIA and ALICO units. AIG will also retire $49 billion under the U.S.’s Troubled Asset Relief Program. Under the plan…