UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of the
Securities Exchange Act of 1934 (Amendment No. )

☑ Filed by the Registrant ☐ Filed by a Party other than the Registrant

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☐	Preliminary Proxy Statement
☐	Confidential, For Use of the Commission Only (as permitted by Rule 14a-6(e)(2))
☐	Definitive Proxy Statement
☑	Definitive Additional Materials
☐	Soliciting Material Under Rule 14a-12

AAR Corp.

(Name of Registrant as Specified In Its Charter)
(Name of Person(s) Filing Proxy Statement, if Other Than the Registrant)

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*** Exercise Your Right to Vote ***
Important Notice Regarding the Availability of Proxy Materials for the
Stockholder Meeting to Be Held on September 24, 2019

AAR CORP.

AAR CORP.
ONE AAR PLACE
1100 NORTH WOOD DALE ROAD
WOOD DALE, IL 60191

Meeting Information
Meeting Type:  Annual Meeting
For holders as of:  August 01, 2019
Date: September 24, 2019   Time: 9:00 AM CDT
Location:	AAR CORP. One AAR Place 1100 North Wood Dale Road Wood Dale, IL 60191

You are receiving this communication because you hold shares in the above named company.

This is not a ballot. You cannot use this notice to vote these shares. This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. You may view the proxy materials online at www.proxyvote.com or easily request a paper copy (see reverse side).

We encourage you to access and review all of the important information contained in the proxy materials before voting.

See the reverse side of this notice to obtain proxy materials and voting instructions.

— Before You Vote —
How to Access the Proxy Materials

Proxy Materials Available to VIEW or RECEIVE:

1. Notice & Proxy Statement     2. Annual Report on Form 10-K     3. Annual Report to Stockholders

How to View Online:

Have the information that is printed in the box marked by the arrow  è XXXX XXXX XXXX XXXX (located on the following page) and visit: www.proxyvote.com.

How to Request and Receive a PAPER or E-MAIL Copy:

If you want to receive a paper or e-mail copy of these documents, you must request one. There is NO charge for requesting a copy. Please choose one of the following methods to make your request:
                                    1) BY INTERNET:     www.proxyvote.com
                                    2) BY TELEPHONE: 1-800-579-1639
                                    3) BY E-MAIL*:          sendmaterial@proxyvote.com

* If requesting materials by e-mail, please send a blank e-mail with the information that is printed in the box marked by the arrow  è XXXX XXXX XXXX XXXX  (located on the following page) in the subject line.

Requests, instructions and other inquiries sent to this e-mail address will NOT be forwarded to your investment advisor. Please make the request as instructed above on or before September 10, 2019 to facilitate timely delivery.

— How To Vote —
Please Choose One of the Following Voting Methods

Vote In Person: Many stockholder meetings have attendance requirements including, but not limited to, the possession of an attendance ticket issued by the entity holding the meeting. Please check the meeting materials for any special requirements for meeting attendance. At the meeting, you will need to request a ballot to vote these shares.

Vote By Internet: To vote now by Internet, go to www.proxyvote.com. Have the information that is printed in the box marked by the arrow è XXXX XXXX XXXX XXXX  available and follow the instructions.

Vote By Mail: You can vote by mail by requesting a paper copy of the materials, which will include a proxy card.

Voting items
The Board of Directors recommends you vote FOR the following:
1.	Election of Directors
	Nominees
1A    James E. Goodwin
1B    John M. Holmes
1C    Marc J. Walfish
The Board of Directors recommends you vote FOR proposals 2. and 3.
2.	Advisory proposal to approve our Fiscal 2019 executive compensation.
3.	The ratification of the appointment of KPMG LLP as our independent registered public accounting firm for the fiscal year ending May 31, 2020.
NOTE: As to any other business as may properly come before the meeting or any adjournment or postponement thereof, this Proxy will be voted in the discretion of the proxies.