Legal Proceedings	12 Months Ended
May 31, 2018
Legal Proceedings
Legal Proceedings	14. Legal Proceedings We are not a party to any material pending legal proceeding (including any governmental or environmental proceeding) other than routine litigation incidental to our business except for the following: DynCorp International LLC v. AAR Airlift Group, Inc. On September 5, 2015, DynCorp International LLC ("DynCorp") filed a complaint in the United States District Court for the Middle District of Florida, Orlando Division (the "District Court"), accusing AAR Airlift Group, Inc. ("Airlift"), a wholly-owned subsidiary of AAR CORP., of misappropriation of DynCorp information, including trade secrets, and other related allegations, in connection with the submission of proposals in response to the solicitation issued by the U.S. Department of State ("DoS") Bureau of International Narcotics and Law Enforcement Affairs, Office of Aviation in support of the Worldwide Aviation Support Services program ("WASS"). On October 19, 2015, DynCorp filed an amended complaint with the District Court. On January 14, 2016, the District Court granted Airlift's motion to dismiss DynCorp's amended complaint. On February 2, 2016, DynCorp appealed the District Court's order to the United States Court of Appeals for the Eleventh Circuit (the "Eleventh Circuit"). On November 21, 2016, the Eleventh Circuit reversed in part the District Court's dismissal of the amended complaint and remanded the case to the District Court for further proceedings. On January 31, 2018, Airlift and DynCorp filed a joint notice of settlement, advising the District Court that they had reached an agreement in principle to resolve DynCorp's lawsuit and that they expected to file a stipulation of dismissal with prejudice within 14 days. On February 1, 2018, the District Court entered an order dismissing the DynCorp lawsuit without prejudice, subject to the right of any party within 60 days to move the court for the purpose of entering a stipulated form of a final order or judgment or, on good cause shown, to reopen the case for further proceedings. On June 20, 2018, the parties entered into a confidential settlement agreement to dismiss the lawsuit with prejudice without the payment of any money by either party. On June 26, 2018, the District Court entered an order dismissing the lawsuit with prejudice. Department of Justice Investigation The U.S. Department of Justice ("DoJ"), acting through the U.S. Attorney's Office for the Southern District of Illinois, is conducting an investigation of Airlift under the federal civil False Claims Act ("FCA"). The investigation relates to Airlift's performance of several contracts awarded by the U.S. Transportation Command concerning the operations and maintenance of rotary-wing and fixed-wing aircraft in Afghanistan and Africa, as well as several U.S. Navy contracts. In June 2018, the DoJ informed Airlift that part of the investigation was precipitated by a lawsuit filed under the qui tam provisions of the FCA by a former employee of Airlift. That lawsuit remains under seal. Airlift is cooperating with the DoJ investigation.

14. Legal Proceedings

We are not a party to any material pending legal proceeding (including any governmental or environmental proceeding) other than routine litigation incidental to our business except for the following:

DynCorp International LLC v. AAR Airlift Group, Inc.

On September 5, 2015, DynCorp International LLC ("DynCorp") filed a complaint in the United States District Court for the Middle District of Florida, Orlando Division (the "District Court"), accusing AAR Airlift Group, Inc. ("Airlift"), a wholly-owned subsidiary of AAR CORP., of misappropriation of DynCorp information, including trade secrets, and other related allegations, in connection with the submission of proposals in response to the solicitation issued by the U.S. Department of State ("DoS") Bureau of International Narcotics and Law Enforcement Affairs, Office of Aviation in support of the Worldwide Aviation Support Services program ("WASS").

On October 19, 2015, DynCorp filed an amended complaint with the District Court. On January 14, 2016, the District Court granted Airlift's motion to dismiss DynCorp's amended complaint. On February 2, 2016, DynCorp appealed the District Court's order to the United States Court of Appeals for the Eleventh Circuit (the "Eleventh Circuit").

On November 21, 2016, the Eleventh Circuit reversed in part the District Court's dismissal of the amended complaint and remanded the case to the District Court for further proceedings.

On January 31, 2018, Airlift and DynCorp filed a joint notice of settlement, advising the District Court that they had reached an agreement in principle to resolve DynCorp's lawsuit and that they expected to file a stipulation of dismissal with prejudice within 14 days.

On February 1, 2018, the District Court entered an order dismissing the DynCorp lawsuit without prejudice, subject to the right of any party within 60 days to move the court for the purpose of entering a stipulated form of a final order or judgment or, on good cause shown, to reopen the case for further proceedings.

On June 20, 2018, the parties entered into a confidential settlement agreement to dismiss the lawsuit with prejudice without the payment of any money by either party. On June 26, 2018, the District Court entered an order dismissing the lawsuit with prejudice.

Department of Justice Investigation

The U.S. Department of Justice ("DoJ"), acting through the U.S. Attorney's Office for the Southern District of Illinois, is conducting an investigation of Airlift under the federal civil False Claims Act ("FCA"). The investigation relates to Airlift's performance of several contracts awarded by the U.S. Transportation Command concerning the operations and maintenance of rotary-wing and fixed-wing aircraft in Afghanistan and Africa, as well as several U.S. Navy contracts. In June 2018, the DoJ informed Airlift that part of the investigation was precipitated by a lawsuit filed under the qui tam provisions of the FCA by a former employee of Airlift. That lawsuit remains under seal. Airlift is cooperating with the DoJ investigation.