If you are referring to Check Spring Bank located at 69 East 167th Street - Bronx, NY 10452 - then yes, according to their website and the FDIC Bank Find Search Tool, this bank is FDIC Insured.

Specifically the FDIC website states that Check Spring Bank has been FDIC insured since October, 26, 2007.  If you have an issue with this instituion, the FDIC instructs you to contact them directly using the following link: https://www2.fdic.gov/starsmail/index.asp

Hope this helps.