i let a friend use my car he got in accident and someone died is it my fault

Yes.  Under New York Vehicle and Traffic Law § 388, every owner of a motor vehicle is responsible for any harm caused by the driver's negligence. https://codes.findlaw.com/ny/vehicle-and-traffic-law/vat-sect-388.html  Report the matter to your insurance company immediately.  It will hire attorneys to defend you and pay any judgment entered against you up to the limits of your insurance. Best regards, Jonathan R. Ratchik, Esq. Kramer, Dunleavy & Ratchik, PLLC 61 Broadway, Suite 2220 New York, NY  10006 (212) 226-6662 www.kdrpilawyers.com