IBA maintains an extensive database of aircraft values which assist in judging the base value and market value of an aircraft. These values can be used to identify the right lease values.

Lease reviews are very important in reducing leasing costs. A lease review typically includes several phases.

The first phase involves information research. Based upon the results of this research, the second phase reconstructs the airline’s payment history and confirms that payments made are in accordance with lease terms. As straightforward as this may seem, major discrepancies can occur between actual lease terms and how property managers interpret them.

The third phase in the process involves a thorough review of the investor's records to verify accounting procedures and to examine actual invoices.

The final phase in the lease review is the negotiation and recovery of overcharges.

IBA can also add value to lease reviews by going a step further and evaluating management practices. Additionally, time trend analysis of previous years can be carried out to identify operating costs.

The potential value of lease reviews to the airline is significant. The issues discovered in the process not only may result in grounds for immediate recovery but also may serve as a tool to gain more advantageous terms in future lease contracts.