Payoff Request Form. First name, Last name, Account Number (optional), Phone, Street address, Apartment, suite, etc.Lien Release Request Form. First name, Last name, Account Number, Phone, Street address, Apartment, suite, etc. A mortgage payoff letter can come in two forms. One form tells borrowers the remaining principal amount and interest they have to pay to close out the loan. How to fill out the Payoff Request Letter Templates? Having the payoff letter and proof of payment will take care of the issue if you try to sell and the mortgage is open. Customer. Member Contact Center 1-888-NASA-FCU (627-2328) 301-249-1800 Hours am - pm ET, Monday - Friday am Request Type: Servicing Fee: Estimated.