This excerpt taken from the AYR 8-K filed Dec 18, 2006.
Interest Rate. Borrowings under the Revolving Credit Agreement bear interest (a) in the case of loans with an interest rate based on the ABR, the ABR plus an applicable margin or (b) in the case of loans with an interest rate based on the EDR, the EDR plus an applicable margin. The applicable margin is 0.50% per annum with respect to ABR borrowings and 1.50% per annum with respect to EDR borrowings. Additionally, we are subject to a 0.25% per annum fee on any unused portion of the total committed facility, during periods when the average outstanding loans under the Revolving Credit Facility are less than $125.0 million, and 0.125% per annum otherwise. Fees on any outstanding letters of credit will equal 1.625% per annum on the stated amount thereof. We are also required to pay customary agency fees.