March 31, 2011
On Thursday, March 31, 2011, the President signed into law:
H.R. 1079, the "Airport and Airway Extension Act of 2011," which extends through May 31, 2011, authorities to collect taxes that fund the Airport and Airway Trust Fund, make expenditures from the Airport and Airway Trust Fund, and make grants to airports under the Airport Improvement Program.
Barack Obama, Statement by the Press Secretary on H.R. 1079 Online by Gerhard Peters and John T. Woolley, The American Presidency Project https://www.presidency.ucsb.edu/node/309179