Whether ngo covered under rti and guarantor liable for debt

While working in an NGO in 2001 I and one other person stood guarantee for 50000/-rs. for another person who did not repay the loan and absconded. I resaigned in 2009 but was re-employed by the same NGO on a per diem of Rs.1500/- per day for max 3 days week in Sep 2013 with out any other benefits. My query: Is the NGO covered under RTI? Am I liable to pay the entire amount?