EXHIBIT 4.1



 Exhibit 4.1 
  

 CHASE ISSUANCE TRUST 
 as Issuing Entity 
 SUPPLEMENTAL INDENTURE 
 with respect to Additional Class A(2007-16) Notes 
 dated as of October 31, 2007

 to 
 CLASS A(2007-16) TERMS
DOCUMENT 
 dated as of October 9, 2007 
 to 
 AMENDED AND RESTATED 
 CHASESERIES INDENTURE SUPPLEMENT 
 dated as of October 15, 2004 
 to 
 SECOND AMENDED AND RESTATED

 INDENTURE 
 dated as
of March 14, 2006 
 WELLS FARGO BANK, NATIONAL ASSOCIATION 
 as Indenture Trustee and Collateral Agent 
  








 TABLE OF CONTENTS 
  


					
	 	  	 	  	PAGE
	
	 ARTICLE I DEFINITIONS AND OTHER PROVISIONS OF GENERAL
 APPLICATION

			
	Section 1.1	  	Definitions	  	1
			
	Section 1.2	  	Governing Law	  	2
			
	Section 1.3	  	Counterparts	  	2
			
	Section 1.4	  	Ratification of Indenture, Indenture Supplement and Terms Document	  	2
			
	Section 1.5	  	Full Force and Effect of Terms Document	  	2
	
	ARTICLE II THE ADDITIONAL CLASS A(2007-16) NOTES
			
	Section 2.1	  	Terms and Issuance	  	3
			
	Section 2.2	  	Modification of Defined Terms	  	3
			
	Section 2.3	  	First Interest Payment Date	  	3
			
	Section 2.4	  	Form of Delivery of Additional Class A(2007-16) Notes; Depository; Denominations	  	3
			
	Section 2.5	  	Delivery and Payment for the Additional Class A(2007-16) Notes	  	4
			
	Section 2.6	  	Supplemental Indenture	  	4








 THIS SUPPLEMENTAL INDENTURE WITH RESPECT TO ADDITIONAL CLASS A(2007-16) NOTES (this “Supplemental
Indenture”), by and between the CHASE ISSUANCE TRUST, a statutory trust created under the laws of the State of Delaware (the “Issuing Entity”), having its principal office at c/o Wilmington Trust Company, 1100 North Market
Street, Wilmington, Delaware 19890-1600, and WELLS FARGO BANK, NATIONAL ASSOCIATION, a national banking association, as indenture trustee (the “Indenture Trustee”) and collateral agent (the “Collateral Agent”), is
made and entered into as of October 31, 2007 and hereby modifies and supplements the Class A(2007-16) Terms Document (the “Terms Document”) entered into by the Issuing Entity, the Indenture Trustee and the Collateral Agent as
of October 9, 2007. 
 WHEREAS, the Issuing Entity and the Indenture Trustee have created, pursuant to the Terms Document, a Tranche of
CHASEseries Class A Notes known as the “CHASEseries Class A(2007-16) Notes.” 
 WHEREAS, pursuant to Section 3.10(c) of
the Indenture, the Issuing Entity and the Indenture Trustee shall issue the Additional Class A(2007-16) Notes (as defined below) that shall be identical in all respects to all other Outstanding Class A(2007-16) Notes and will be equally and ratably
entitled to the benefits of the Indenture and the Indenture Supplement as all other Outstanding Class A(2007-16) Notes without preference, priority or distinction. 
 NOW, THEREFORE, in connection with the issuance of the Additional Class A(2007-16) Notes, the Issuing Entity and the Indenture Trustee enter into this Supplemental Indenture. 
 ARTICLE I 
 DEFINITIONS AND OTHER PROVISIONS
OF GENERAL APPLICATION 
 Section 1.1 Definitions. For all purposes of this Supplemental Indenture, except as otherwise expressly
provided or unless the context otherwise requires: 
 (a) the terms defined in this Article have the meanings assigned to them in this
Article, and include the plural as well as the singular; and 
 (b) all other terms used herein which are defined in the Indenture
Supplement, the Indenture, the Asset Pool Supplement or the Terms Document, either directly or by reference therein and are not modified by Section 2.2 hereof, have the meanings assigned to them therein. 
 “Additional Class A(2007-16) Notes” means the $50,000,000 principal amount Class A(2007-16) Notes described in this Supplemental
Indenture, substantially in the form set forth in Exhibit A-1 to the Indenture Supplement, designated therein as a Class A(2007-16) Note and duly executed and authenticated in accordance with the Indenture. 







 “Additional Issuance Date” means October 31, 2007. 
 Section 1.2 Governing Law. THIS SUPPLEMENTAL INDENTURE WILL BE CONSTRUED IN ACCORDANCE WITH AND GOVERNED BY THE LAWS OF THE STATE
OF DELAWARE WITHOUT REFERENCE TO ITS CONFLICT OF LAW PROVISIONS AND THE OBLIGATIONS, RIGHTS AND REMEDIES OF THE PARTIES HEREUNDER SHALL BE DETERMINED IN ACCORDANCE WITH SUCH LAWS. 
 Section 1.3 Counterparts. This Supplemental Indenture may be executed in any number of counterparts, each of which so executed will be deemed
to be an original, but all such counterparts will together constitute but one and the same instrument. 
 Section 1.4 Ratification of
Indenture, Indenture Supplement and Terms Document. As supplemented by this Supplemental Indenture, each of the Indenture, the Asset Pool Supplement, the Indenture Supplement and the Terms Document is in all respects ratified and confirmed and
the Indenture as so supplemented by the Asset Pool Supplement, the Indenture Supplement as so supplemented by the Terms Document and the Terms Document and so supplemented by this Supplemental Indenture shall be read, taken and construed as one and
the same instrument. 
 Section 1.5 Full Force and Effect of Terms Document. All terms and conditions of the Terms Document not
changed hereby shall remain in full force and effect. 
 [END OF ARTICLE I] 







 ARTICLE II 
 THE ADDITIONAL CLASS A(2007-16) NOTES 
 Section 2.1 Terms and Issuance. The Additional Class
A(2007-16) Notes shall be identical in all respects to all other Outstanding Class A(2007-16) Notes and will be equally and ratably entitled to the benefits of the Indenture, the Indenture Supplement and the Terms Document as all other Outstanding
Class A(2007-16) Notes without preference, priority or distinction. The Additional Class A(2007-16) Notes shall be issued pursuant to the Indenture and the Indenture Supplement on the Additional Issuance Date. 
 Section 2.2 Modification of Defined Terms. Upon issuance of the Additional Class A(2007-16) Notes, all references in the Terms Document to
the Class A(2007-16) Notes shall include the Additional Class A(2007-16) Notes and each of the following terms, as used in the Terms Document, shall have the respective meanings set forth below: 
 “Controlled Accumulation Amount” means $52,083,333.34; provided, however, if the Accumulation Period Length is determined
to be less than twelve months pursuant to Section 3.12(b)(ii) of the Indenture Supplement, the Controlled Accumulation Amount for any Note Transfer Date with respect to the Class A(2007-16) Notes will be the amount specified in the definition
of “Controlled Accumulation Amount” in the Indenture Supplement. 
 “Initial Dollar Principal Amount” means
$625,000,000. 
 “Stated Principal Amount” means $625,000,000. 
 Section 2.3 First Interest Payment Date. The amount of interest due for the first Interest Payment Date with respect to the Additional Class
A(2007-16) Notes shall be an amount equal to the product of (x) $50,000,000, (y) 69 divided by 360 and (z) the Note Interest Rate in effect with respect to the Class A(2007-16) Notes determined on October 5, 2007. 
 Section 2.4 Form of Delivery of Additional Class A(2007-16) Notes; Depository; Denominations. 
 (a) The Additional Class A(2007-16) Notes shall each be delivered in the form of a global Registered Note as provided in Sections 2.02 and 3.01(i) of the
Indenture, respectively. 
 (b) The Depository for the Additional Class A(2007-16) Notes shall be The Depository Trust Company, and the
Additional Class A(2007-16) Notes shall initially be registered in the name of Cede & Co., its nominee. 
 (c) The Additional Class
A(2007-16) Notes will be issued in minimum denominations of $100,000 and integral multiples of $1,000 in excess of $100,000. 







 Section 2.5 Delivery and Payment for the Additional Class A(2007-16) Notes. The Issuing
Entity shall execute and deliver the Additional Class A(2007-16) Notes to the Indenture Trustee for authentication, and the Indenture Trustee shall deliver the Additional Class A(2007-16) Notes when authenticated, each in accordance with
Section 3.03 of the Indenture. 
 Section 2.6 Supplemental Indenture. The Issuing Entity may enter into a supplemental
indenture with respect to the Class A(2007-16) Notes as provided in Section 9.01 of the Indenture; provided, however, that any supplemental indenture which provides for an additional or alternative form of credit enhancement for the Class
A(2007-16) Notes shall, in addition to the requirements set forth in Section 9.01 of the Indenture, require confirmation from the Note Rating Agencies that have rated any Outstanding Notes of the CHASEseries that such change in credit
enhancement will not result in a Ratings Effect with respect to any Outstanding Notes of the CHASEseries. 
 [END OF ARTICLE II] 







 IN WITNESS WHEREOF, the parties hereto have caused this Supplemental Indenture to be duly executed, all
as of the day and year first above written. 
  

			
	CHASE ISSUANCE TRUST
		
	By:	 	CHASE BANK USA, NATIONAL ASSOCIATION,
		 	as Beneficiary and not in its individual capacity
		
	By:	 	 /s/ Keith W. Schuck

	Name:	 	Keith W. Schuck
	Title:	 	President
	
	WELLS FARGO BANK, NATIONAL ASSOCIATION,
	as Indenture Trustee and Collateral Agent
		
	By:	 	 /s/ Cheryl C. Zimmerman

	Name:	 	Cheryl C. Zimmerman, CCTS
	Title:	 	Assistant Vice President


 Supplemental Indenture 
 CHASEseries Class A(2007-16) REOPEN Notes Issuance