X0508 4 2024-05-06 0000001750 AAR CORP AIR 0001782618 Jessup Christopher A. 1100 N. WOOD DALE ROAD WOOD DALE IL 60191 1 Senior Vice President-CCO 0 Common Stock 2024-05-06 4 M 0 5052 37.74 A 56854.525 D Common Stock 2024-05-06 4 S 0 5052 70.0912 D 51802.525 D Common Stock 2024-05-06 4 M 0 10877 37.66 A 62679.525 D Common Stock 2024-05-06 4 S 0 10877 70.0912 D 51802.525 D Stock Option 37.74 2024-05-06 4 M 0 5052 0 D 2022-07-31 2031-07-12 Common Stock 5052 2528 D Stock Option 37.66 2024-05-06 4 M 0 10877 0 D 2020-07-31 2029-07-08 Common Stock 10877 0 D The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $70.00 to $70.5600 inclusive. The reporting person undertakes to provide AAR CORP., any security holder of AAR CORP., or the staff of the Securities and Exchange Commission upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. The reporting person received a grant of stock options for 7,580 shares of common stock on July 12, 2021. The stock options vest in 33 1/3% increments on each of July 31, 2022, July 31, 2023 and July 31, 2024. The reporting person received a grant of stock options for 24,250 shares of common stock on July 8, 2019. The stock options vested in 33 1/3% increments on each of July 31, 2020, July 31, 2021, and July 31, 2022. /s/ Katherine Kwiat, power of attorney 2024-05-08 Christopher Jessup POA

EXHIBIT 24

AAR CORP

Power of Attorney
for Executing Forms 3, 4 and 5

Know all men by these presents, that the undersigned, director or officer, or both, of AAR CORP, hereby constitutes and appoints each of Katherine Kwiat, Jessica Garascia, Kim Loies, Jamie Brown, signing singly, the undersigned's true and lawful attorney-in-fact to:
(1) execute for and on behalf of the undersigned, in the undersigned's capacity as an officer and/or director of AAR CORP (the "Company"), Forms 3, 4, and 5 in accordance with Section 16(a) of the Securities Exchange Act of 1934 and the rules thereunder;
(2) do and perform any and all acts for and on behalf of the undersigned which may be necessary or desirable to complete and execute any such Form 3, 4 or 5 and timely file such form with the United States Securities and Exchange Commission and any stock exchange or similar authority; and
(3) take any other action of any type whatsoever in connection with the foregoing which, in the opinion of such attorney-in-fact, may be of benefit to, in the best interest of, or legally required by, the undersigned, it being understood that the documents executed by such attorney-in-fact on behalf of the undersigned pursuant to this Power of Attorney shall be in such form and shall contain such terms and conditions as such attorney-in-fact may approve in such attorney-in-fact's discretion.
The undersigned hereby grants to each such attorney-in-fact full power and authority to do and perform any and every act and thing whatsoever requisite, necessary, or proper to be done in the exercise of any of the rights and powers herein granted, as fully to all intents and purposes as the undersigned might or could do if personally present, with full power of substitution or revocation, hereby ratifying and confirming all that such attorney-in-fact, or such attorney-in-fact's substitute or substitutes, shall lawfully do or cause to be done by virtue of this power of attorney and the rights and powers herein granted. The undersigned acknowledges that the foregoing attorneys-in-fact, in serving in such capacity at the request of the undersigned, are not assuming, nor is the Company assuming, any of the undersigned's responsibilities to comply with Section 16 of the Securities Exchange Act of 1934.
This Power of Attorney shall remain in full force and effect until the undersigned is no longer required to file Forms 3, 4 and 5 with respect to the undersigned's holdings of and transactions in securities of AAR CORP unless earlier revoked by the undersigned in a signed writing delivered to the foregoing attorneys-in-fact.
IN WITNESS WHEREOF, the undersigned has executed this Power of Attorney as of this 18th day of January, 2023
/s/ Christopher Jessup
Christopher Jessup