No, TurboTax does not support tax year 2011.
If you are filing a 2011 tax return for a tax refund, the time to file for a refund has expired. The 2011 tax return had to be filed on or before April 15, 2015 for a tax refund.
Please visit the IRS website for free federal forms, schedules and instructions for prior tax years - https://www.irs.gov/forms-pubs