Acre has a very good forms page – view here – https://acre2000.com/misc-forms/

MY MTA portal forms – bsc portal
https://www.mymta.info/psp/PAPRD/?cmd=login&errorPg=ckreq&languageCd=ENG

HR-BEN-300 Notice and Proof of Claim for Disability Benefits –
5779: HR-BEN-300 Notice and Proof of Claim for Disability Benefits Last Updated Date: 2016-01-02

5779: HR-BEN-300 Notice and Proof of Claim for Disability Benefits