For the OPA549T(TO-220) Op-Amp, the footprint provided on the TI's website seems incorrect. If you compare pin locations with specs, the pin-1 row should be on lower side while Pin-2, 4, 6 and 8 should be on upper side. Currently they are revered. We already have a board built on the footprint provided by you. Can you please let us know if my assumption is incorrect and the footprint is bad?
For OPA549T specs, goto:
http://www.ti.com/lit/ds/symlink/opa549.pdf
Comparing with device package at:
http://www.ti.com/litv/pdf/MPZF003B
It seems that the Pin-1(left side) should be more bend outwards from the body of the amplifier. Sow pins 1, 3, 5, 7, 9 and 11 should be on Bottom Row while Pins 2, 4, 6, 8 and 10 should on on Top row. However please see footprint at:
http://webench.ti.com/cad/dlbxl.cgi/TI_BXL/OPA549_KV_11.bxl
On this footprint, it seems that this is reversed.