Dan Yoon v. K.S. Aviation Inc., et al.

District Court, N.D. California·Decided June 9, 2026·No. 3:25-cv-04076·Unknown

Opinion

DAN YOON, Case No. 25-cv-04076-MMC

Plaintiff-Appellee, ORDER AFFIRMING BANKRUPTCY v. COURT’S GRANT OF SUMMARY JUDGMENT AND JUDGMENT AFTER K.S. AVIATION INC., et al., BENCH TRIAL Defendants-Appellants.

Before the Court is defendants-appellants John Yoon, K.S. Aviation, Inc. (“K.S.”), Xing Kong Aviation Service, LLC (“Xing Kong”), and Xin Han Aviation, LLC’s (“Xin Han”) appeal from the judgment entered in the above-titled action by the Bankruptcy Court on April 16, 2025. In particular, defendants-appellants appeal the Bankruptcy Court’s (1) grant of summary judgment against John Yoon and K.S. and in favor of plaintiff-appellee Dan Yoon in the amount of $260,514.18, and (2) judgment against Xing Kong and Xin Han and in favor of Dan Yoon for that same amount. The matter has been fully briefed. The Court, having read and considered the parties’ respective written submissions,1 hereby rules as follows.

1 Defendants-appellants request the Court take judicial notice of an order denying a motion to amend a judgment to add Xing Kong as a debtor in a state court lawsuit brought by a different plaintiff against K.S. (See Doc. No. 7.) The Court declines to take judicial notice, as the document is not relevant to the Court’s determination of the issues discussed herein. See, e.g., Santa Monica Food Not Bombs v. City of Santa Monica, 450 F.3d 1022, 1025 n.2 (9th Cir. 2006) (declining to take judicial notice where documents were “not relevant to the resolution of [the] appeal”); McGhee v. Tesoro Refin. & Mktg. Co. LLC, 440 F. Supp. 3d 1062, 1066 n.1 (N.D. Cal. 2020) (declining to take judicial notice where “documents [were] not relevant to the Court’s conclusions”). In particular, defendants-appellants “do[] not argue that the case has preclusive effect; instead, [they] offer[] the case to emphasize the incongruency in the Bankr[uptcy] Court’s holding and conflicting judicial decisions” (see Reply Brief at 15), an offer that has no bearing on whether the Bankruptcy Court, based on the arguments and evidence presented on the BACKGROUND2 The instant appeal arises from a long-running dispute between two business partners, plaintiff-appellee Dan Yoon (hereinafter “Dan”) and defendant-appellant John Yoon (hereinafter “John”). Dan and John jointly owned K.S., a corporation with two subsidiaries: Sierra Academy of Aeronautics (“Sierra Academy”), which operated a flight training school, and Sierra Air Center Development, LLC (“Sierra Air”), which operated a nascent EB-5 program.3 In July 2014, Sierra Air took out two loans, namely, a $1.5 million loan from Bank of the West (“BOTW”) and a $1.543 million U.S. Small Business Administration loan from the Bay Area Employment Development Company (“BAED”). (See App. 170.) Both loans were secured by a “[f]light [s]imulator” (see id. at 930), and Dan personally guaranteed the loans (see id. at 170).4 Shortly thereafter, Dan and John’s business relationship deteriorated, and on June 29, 2015, Dan sought to terminate John’s employment, resulting in litigation unrelated to the instant action. (See id. at 171). Making matters worse, in June 2016, Sierra Air defaulted on the BOTW and BAED loans secured by the flight simulator, leading BOTW to file, in July 2016 in Alameda County Superior Court, a lawsuit seeking to collect on its defaulted loan. (See id. at 171-72, 930.) On September 2, 2016, Dan and John reached a settlement agreement (the “Agreement”) resolving the above-referenced litigation between them as well as addressing Dan’s personal guarantees of the now-defaulted loans, which guarantees 2 The following facts, unless stated otherwise, are taken from the Appendix (“App.”) filed by defendants-appellants. (See Doc. No. 14.) 3 An EB-5 program “is a facility by which nonresident aliens can obtain Green Cards in exchange for an investment in the United States.” (See App. 507.) As part of Sierra Air, Dan apparently wanted to build out “an airhub where you could ship fresh vegetables and goods … to Asia.” (See id. at 349.) 4 John, K.S., Dan’ wife, Jenee, and Dan’s company, Hana Japan, were co- guarantors of the BOTW loan (see App. 170), while K.S., Jenee, and Hana Japan, co- were causing Dan “significant financial stress.” (See id. at 171, 245-52.) Specifically, as to the litigation, Dan agreed to resign from K.S., relinquish his ownership in K.S. and Sierra Academy, and return all corporate property to K.S. (see id. at 245-46); in exchange, John and K.S. surrendered their interests in Sierra Air, agreed to pay back personal loans to Dan, and arranged for K.S. to make scheduled payments to Dan based on K.S.’s meeting financial benchmarks in the future (see id.). As to the guarantees, Dan “agree[d] and recognize[d] that the simulator facility and its contents are not part of the EB-5 regional investment program” and thus “belong to [K.S.],” and, “[i]n recognition of Dan’s agreement that [K.S.] owns the simulator facility and its contents[,] John and [K.S.] agree[d] to indemnify Dan should the loans for said items become delinquent and the creditors seek enforcement against Dan.” (See id. at 247.) In BOTW’s lawsuit to collect on its loan secured by the flight simulator, the Alameda County Superior Court appointed a receiver to take control of the simulator “and sell it for the benefit of BOTW and to the extent funds were available, for [BAED].” (See id. at 930.) After the flight simulator was sold, an outstanding balance of $260,514.18 remained on the BAED loan. (See id.) All the while, Dan was failing to fulfill his obligation in the Agreement to turn over his shares in K.S. to John (see id. at 496), while K.S. allegedly was failing to pay back the personal loans Dan had made to the company (see id. at 6-7). On March 2, 2017, Dan filed the instant lawsuit in Merced County Superior Court, seeking to collect on the loans he had made to K.S. in prior years (see id. at 5-47). In August 2017, Chen Zhao (“Zhao”) entered the picture. In particular, John and Zhao negotiated a stock purchase agreement whereby John agreed to sell K.S. to Zhao. (See id. at 614, 657.) Zhao then began operating K.S. and Sierra Academy under the name Xing Kong (see id. at 663, 744) and formed Xin Han to “hold[] title for the aircraft” acquired and used by Xing Kong (see id. at 632-35). On March 4, 2020, while the instant case was proceeding in state court, Dan his wife, Jeenee, had filed for Chapter 11 bankruptcy protection. (See id. at 1-3.) In the bankruptcy proceeding, BAED filed a $260,514.18 unsecured proof of claim based on Dan’s guarantee of the loan. (See id. at 927-30.) In the operative complaint, the Fourth Amended Complaint, filed after the case was removed to bankruptcy court, Dan claimed, inter alia, that John and K.S. were obligated under the Agreement to indemnify him for loans, including the BAED loan, made to purchase the flight simulator, and that Xing Kong, Xin Han, and Zhao, were liable for any judgment entered against K.S. (See id. at 141-42.)5 On December 23, 2022, Dan filed a motion for summary judgment against John and K.S. on his indemnification claim, on the asserted grounds that (1) there was no dispute the BAED loan was used to purchase the flight simulator and (2) his failure to turn over his K.S. shares was not a condition precedent to John and K.S.’s obligation to indemnify. (See id. at 162-164.) On March 13, 2023, the Bankruptcy Court granted the motion as to the above issues. (See id. at 204, 212-215.) On July 8-10, 2024, the Bankruptcy Court held a three-day bench trial on Dan’s remaining claims. As relevant to the instant appeal, Dan sought to hold “defendants Xing Kong, Xin Han, and [Zhao] … liable on any judgment against [K.S.] under an alter ego or successor liability theory.” (See id. at 880.) On April 16, 2025, the Bankruptcy Court entered judgment in favor of Dan against John, K.S., Xing Kong, and

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Dan Yoon v. K.S. Aviation Inc., et al., (N.D. Cal. 2026).

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