Ex-101 INSTANCE DOCUMENT

Exhibit 10.4

Supplemental Agreement No. 23

to

Purchase Agreement No. 3157

between

The Boeing Company

And

Federal Express Corporation

Relating to Boeing Model 777-FREIGHTER Aircraft

THIS SUPPLEMENTAL AGREEMENT, entered into as of the 10^th day of December 2013, by and between THE BOEING COMPANY (Boeing) and FEDERAL EXPRESS CORPORATION (Customer);

W I T N E S S E T H:

A. WHEREAS, the parties entered into that certain Purchase Agreement No. 3157, dated November 7, 2006 (Purchase Agreement), relating to the purchase and sale of certain Boeing Model 777-FREIGHTER Aircraft (Aircraft); and

B. WHEREAS, Customer desires to reschedule the delivery date of eleven (11) Option Aircraft under Letter Agreement 6-1162-RRO-1062 to the Purchase Agreement as shown in the table below:

NOW THEREFORE, in consideration of the mutual covenants herein contained, the parties hereto agree to supplement the Purchase Agreement as follows:

All terms used herein and in the Purchase Agreement, and not defined herein, shall have the same meaning as in the Purchase Agreement.

EXECUTED as of the day and year first above written.

TABLE OF CONTENTS

Attachment to

Letter 6-1162-RRO-1062

Option Aircraft Delivery, Description, Price and Advance Payments

		The Boeing Company
		P.O. Box 3707
		Seattle, WA 98124-2207

6-1162-SCR-186

October 1, 2013

Federal Express Corporation

3131 Democrat Road

Memphis, TN 38118

Boeing agreed to provide Customer certain business considerations related to [*] Engine Hard Mount Kits (Kits) as detailed under the Letter Agreement. At the time of execution of said Letter Agreement, Customer had ordered [*] Kits on a cumulative basis.

Subsequent to the date of execution of the Letter Agreement, Boeing has provided Customer three separate Master Change proposals relating to the Kits as follows:

On a cumulative basis, the total number of Kits ordered by Customer, including the initial quantity of [*] Kits, through item 2 above is [*] Kits. Of the [*] Kits included in item c, (i) [*] of the Kits will fall under the terms of paragraph 2 of the Letter Agreement and (ii) [*] of the Kits will fall under the terms of paragraph 3 of the Letter Agreement, except as described in the paragraph immediately below.

Customer understands that Boeing considers certain commercial and financial information contained in this business consideration as confidential. Each of Customer and Boeing agree that it will treat this business consideration and the information contained herein as confidential. Customer agrees to limit the disclosure of the contents of this business consideration to employees of Customer with a need to know and who understand that they are not to disclose its content to any other person or entity without the prior written consent of Boeing. Notwithstanding the foregoing, Customer may disclose this business consideration and the terms and conditions herein to its parent company, FedEx Corporation, to the Board of Directors of its parent corporation, FedEx Corporation, to its professional advisors under a duty of confidentiality with respect hereto, and as required by law.

6-1162-SCR-193

November 29, 2013

Federal Express Corporation

3131 Democrat Road

Memphis, TN 38118

Any capitalized term used but not defined herein shall have the meaning ascribed to it in the Purchase Agreement.

The purpose of this Letter Agreement is to document certain terms and conditions under which [*].

Customer understands that Boeing considers certain commercial and financial information contained in this business consideration as confidential. Each of Customer and Boeing agree that it will treat this business consideration and the information contained herein as confidential. Customer agrees to limit the disclosure of the contents of this business consideration to employees of Customer with a need to know and who understand that they are

not to disclose its content to any other person or entity without the prior written consent of Boeing. Notwithstanding the foregoing, Customer may disclose this business consideration and the terms and conditions herein to its parent company, FedEx Corporation, to the Board of Directors of its parent corporation, FedEx Corporation, to its professional advisors under a duty of confidentiality with respect hereto, and as required by law.

ACCEPTED AND AGREED TO this

Date: December 10, 2013