[table]
[tr][td]SFI 38.1 Sticker Month/Year Expiration Date[/td][/tr]
[tr][td]Month/2004 April 1, 2012[/td][/tr]
[tr][td]Month/2005 April 1, 2012[/td][/tr]
[tr][td]Month/2006 April 1, 2012[/td][/tr]
[tr][td]Jan-Mar/2007 April 1, 2012[/td][/tr]
[tr][td]Apr-Dec/2007 Month/2012[/td][/tr]
[tr][td]Month/2008 Month/2013[/td][/tr]
[tr][td]Month/2009 Month/2014[/td][/tr]
[tr][td]Month/2010 Month/2015[/td][/tr]
[tr][td]Month/2011 Month/2016[/td][/tr]
[/table]
Basically, if your SFI sticker is March 2007 or older, you need to have it recertified by April 1 2012, and so on from there.
This was in a NASA-SE email blast today, but HANS (and I presume other 38.1 devices) are now going to have to be recertified periodically. BMW CCA Club racing had announced this earlier, so I just had mine done at HANS in Chamblee.
Here’s a link to the HANS page: http://hansdevice.com/SFI-Recertification-Program?sc=2&category=8