11. Commitments and Contingencies Contractual Commitments  We have agreements with airborne equipment vendors under which we have remaining commitments to purchase $7.8 million in satellite based systems and development services as of September 30, 2014. Such commitments will become payable as we receive the equipment and are provided the development services. We have agreements with vendors to provide us with transponder and teleport satellite services. These agreements vary in length and amount and commit us to purchase transponder and teleport satellite services totaling approximately $7.9 million in 2014 (October through December), $33.4 million in 2015, $33.3 million in 2016, $31.8 million in 2017, $15.2 million in 2018 and an amount less than $0.1 million in 2019. Damages and Penalties  Certain of our agreements with our airline partners may require us to incur additional obligations as a result of the occurrence of specified events, some of which may be out of our control. One contract covering the international fleet of one of our airline partners requires us to provide a credit or refund of up to $25 million to our airline partner if a competing airline installs satellite connectivity systems on a certain number of aircraft in its international fleet more quickly than we install our system on the same number of aircraft in our airline partner s international fleet. The refund or credit will be eliminated in its entirety if we complete full installation of our airline partner s international fleet by January 1, 2015, which date may be extended by up to six months as a result of certain excusable delays, and has been and will continue to be reduced proportionately from the maximum amount for every installation that we complete before the competitor achieves the target. The amount of any such refund or credit depends on a number of facts and circumstances, such as the pace at which we install satellite systems on aircraft delivered to us by our airline partner, as well as some that are not under our control