Commitments and Contingencies Flight Equipment Commitments In April 2019, we announced our intention to launch multiple daily flights from John F. Kennedy International Airport and Boston Logan International Airport to London in 2021. In connection with our plans to launch flights to London, we amended our purchase agreement with Airbus to convert 13 A321 new engine option (A321neo) deliveries into A321 Long Range (A321LR) deliveries. In June 2019, we further amended our purchase agreement with Airbus to convert an additional 13 A321neo deliveries into A321 Xtra Long Range (A321XLR) deliveries. In addition, we also converted 10 of our options for the Airbus A220-300 aircraft into firm orders. As of June 30, 2019 , our firm aircraft orders consisted of 84 Airbus A321neo aircraft and 70 Airbus A220 aircraft, all scheduled for delivery through 2026. Expenditures for these aircraft and related flight equipment and engines, including estimated amounts for contractual price escalations and predelivery deposits, will be approximately $871 million for the remainder of 2019 , $1.2 billion in 2020 , $1.4 billion in 2021 , $1.3 billion in 2022 , $1.7 billion in 2023 , and $2.2 billion thereafter . The amount of committed expenditures stated above represents the current delivery schedule set forth in our Airbus order book as of June 30, 2019 . In October 2018 and May 2019, we received notice from Airbus of anticipated delivery delays for the A321neo aircraft. We expect a delivery of a maximum of six A321neo aircraft in 2019 as a result of the delays. Other Commitments We utilize several credit card processors to process our ticket sales. Our agreements with these processors do not contain covenants, but do generally allow the processor to withhold cash reserves to protect the processor from potential liability for tickets purchased, but not yet used for travel. While we currently do not have any collateral requirements related to our credit card processors, we may be required to issue collateral to our credit card processors, or other key business partners, in the future. As of June 30, 2019 , we had approximately $27 million in assets serving as collateral for letters of credit relating to a certain number of our leases. These are included in restricted cash and expire at the end of the related lease terms. Additionally, we had approximately $33 million in assets pledged related to our workers compensation insurance policies and other business partner agreements which will expire according to the terms of the related policies or agreements. In April 2014, ALPA was certified by the National Mediation Board, or NMB, as the representative body for JetBlue pilots after winning a representation election. We reached a final agreement for our first collective bargaining agreement which was ratified by the pilots in July 2018. The agreement is a four-year, renewable contract, which became effective August 1, 2018 and included compensation, benefits, work rules, and other policies. In April 2018, JetBlue inflight Crewmembers elected to be solely represented by the Transport Workers Union of America, or TWU. The NMB certified the TWU as the representative body for JetBlue inflight Crewmembers and we are working with the TWU to reach a collective bargaining agreement. Except as noted above, our Crewmembers do not have third party representation. Legal Matters Occasionally, we are involved in various claims, lawsuits, regulatory examinations, investigations and other legal matters arising, for the most part, in the ordinary course of business. The outcome of litigation and other legal matters is always uncertain. The Company believes it has valid defenses to the legal matters currently pending against it, is defending itself vigorously and has recorded accruals determined in accordance with GAAP, where appropriate. In making a determination regarding accruals, using available information, we evaluate the likelihood of an unfavorable outcome in legal or regulatory proceedings to which we are a party and record a loss contingency when it is probable a liability has been incurred and the amount of the loss can be reasonably estimated. These subjective determinations are based on the status of such legal or regulatory proceedings, the merits of our defenses and consultation with legal counsel. Actual outcomes of these legal and regulatory proceedings may materially differ from our current estimates. It is possible that resolution of one or more of the legal matters currently pending or threatened could result in losses material to our consolidated results of operations, liquidity or financial condition. To date, none of these types of litigation matters, most of which are typically covered by insurance, has had a material impact on our operations or financial condition. We have insured and continue to insure against most of these types of claims. A judgment on any claim not covered by, or in excess of, our insurance coverage could materially adversely affect our financial condition or results of operations.