You will need these to remove hypothecation from RC.
Original Bank NOC
Original RC
Original Form 35 (2 copies duly signed by the bank and registered owner)
Copy of valid insurance – attested
Copy of valid PUC (Pollution Under Control) certificate – attested
Copy of PAN Card – attested
Copy of Address Proof – attested
And if you current address is different form the one in RC, you also need Form 33