8-K

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of

The Securities Exchange Act of 1934

Date of Report (Date of earliest event reported)        February 18, 2003

BANK ONE, DELAWARE, NATIONAL ASSOCIATION

( Formerly FIRST USA BANK, NATIONAL ASSOCIATION)

(Exact name of registrant as specified in its charter)

(As Servicer on behalf of FIRST CHICAGO MASTER TRUST II)

Laws of the United States	0-16337	51-0269396
(State or other jurisdiction of incorporation or organization)	(Commission File Number)	(IRS Employer Identification Number)

201 North Walnut Street, Wilmington, Delaware 19801

(Address of principal executive offices) (Zip Code)

302/594-4000

Registrant’s telephone number, including area code

N/A

(Former name, former address and former fiscal year, if changed since last report)

Item 5.    Other Events

The Registrant hereby incorporates by reference the information contained in Exhibit 28 hereto in response to this Item 5.

Item 7.    Financial Statements and Exhibits

(c)    Exhibits

28A.	Excess Spread Analysis
28B.	Monthly Servicer’s Certificate—
	Floating Rate Asset Backed Certificates Series 1999-X
	Floating Rate Asset Backed Certificates Series 1999-Y
28C.	Certificateholder’s Payment Date Statement—First Chicago Master Trust II Floating Rate Credit Card Certificates Series 1999-X
28D.	Certificateholder’s Payment Date Statement—First Chicago Master Trust II Floating Rate Credit Card Certificates Series 1999-Y

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

BANK ONE, DELAWARE, NATIONAL ASSOCIATION

(Formerly FIRST USA BANK, NATIONAL ASSOCIATION)

as Servicer

By:	/s/ MICHAEL J. GRUBB
	Name:  Michael J. Grubb Title:    First Vice President

Date:  February 18, 2003

INDEX TO EXHIBITS

Exhibit Number	Description of Exhibit
28A.	Excess Spread Analysis
28B.	Monthly Servicer’s Certificate—
	Floating Rate Asset Backed Certificates Series 1999-X
	Floating Rate Asset Backed Certificates Series 1999-Y
28C.	Certificateholder’s Payment Date Statement—First Chicago Master Trust II Floating Rate Credit Card Certificates Series 1999-X
28D.	Certificateholder’s Payment Date Statement—First Chicago Master Trust II Floating Rate Credit Card Certificates Series 1999-Y

EX-28.A

Exhibit 28A

First Chicago Credit Card Master Trust II

Excess Spread Analysis—January 2003

Series	* 1999-X	1999-Y
Deal Size	$750MM	$550MM
Expected Maturity	06/16/2003	08/15/2003
Yield	15.67%	18.42%
Less:  Coupon	1.59%	1.63%
Servicing Fee	1.28%	1.50%
Net Credit Losses	4.65%	5.46%
Excess Spread:
January-03	8.15%	9.83%
December-02	10.46%	10.46%
November-02	10.03%	10.04%
Three Month Average Excess Spread	9.55%	10.11%
Delinquency:
30 to 59 Days	1.25%	1.25%
60 to 89 Days	0.85%	0.85%
90+ Days	1.73%	1.73%
Total	3.83%	3.83%
Payment Rate	30.28%	30.28%

* Results are skewed downward due to the calculation methodology during the accumulation period.

EX-28.B

Exhibit 28B

MONTHLY SERVICER'S CERTIFICATE

Bank One, Delaware, National Association

First Chicago Master Trust II

February 12, 2003

The undersigned, a duly authorized representative of Bank One, Delaware, National Association (“the Bank”), as Servicer pursuant to the Pooling and Servicing Agreement dated as of June 1, 1990, as amended and restated as of September 1, 1999, as amended and supplemented, (the “Pooling and Servicing Agreement”) by and between the Bank, as Seller and Servicer and Norwest Bank Minnesota, National Association, as Trustee, does hereby certify as follows:

1.    Capitalized terms used in this Certificate have their respective meanings set forth in the Pooling and Servicing Agreement
2.    The Bank is as of the date hereof the Seller and Servicer under the Pooling and Servicing Agreement
3.    The undersigned is a Servicing Officer.
4.    The aggregate amount of Collections processed for the Due Period for this Distribution Date was equal to	$3,455,746,191.22
5.    (a) The aggregate amount of such Collections allocated to Principal Receivables for the Due Period for this Distribution Date was equal to	$3,339,836,957.72
(b) The aggregate amount of such Collections allocated to Finance Charge Receivables for the Due Period for this Distribution Date was equal to	$115,909,233.50
6.    (a) The aggregate Interchange Amount (which will be included as Finance Charge Receivables for all Series) for this Distribution Date was equal to	$53,437,391.32
(b) The aggregate Net Recoveries Amount (which will be included as Finance Charge Receivables for all Series) for this Distribution Date was equal to	$3,133,070.82
7.    The Invested Percentage of Collections allocated to Principal Receivables for the Due Period was equal to for:

Series 1999-X	7.771%
Series 1999-Y	5.698%

8.    The Invested Percentage of Collections allocated to Finance Charge Receivables for the Due Period was equal to for:

Series 1999-X	6.460%
Series 1999-Y	5.698%

9.    The Invested Percentage with respect to the Investor Default Amount for the Due Period was equal to for:

Series 1999-X	6.460%
Series 1999-Y	5.698%

10.   The aggregate amount of drawings or payments, if any, under the Enhancement, if any, required to be made on the next succeeding Distribution Date is equal to for:

Series 1999-X	$0.00
Series 1999-Y	$0.00

11.   The amount of interest due on the Cash Collateral Account loan, if applicable, required to be paid on the next Distribution Date is equal to for:

Series 1999-X	$0.00
Series 1999-Y	$0.00

12.   The amount of Monthly Servicing Fee required to be paid on the next succeeding Distribution Date is equal to for:

Series 1999-X	$890,792.74
Series 1999-Y	$785,714.29

13.   The aggregate amount payable to the Investor Certificateholders on the succeeding Distribution Date in respect of interest is equal to for:

Series 1999-X	$1,266,126.57
Series 1999-Y	$965,424.61

14.   The aggregate amount payable to the Investor Certificateholders on the succeeding Distribution Date in respect of principal is equal to for:

Series 1999-X	$19,508,670.52
Series 1999-Y	$0.00

15.  The excess, if any, of the Seller Amount over the Aggregate Principal Receivables required to be maintained pursuant to the Agreement	$9,544,938,853.26
16.  The Seller Amount for the Due Period divided by Aggregate Principal Receivables for the Due Period	86.708%
17.  The Minimum Seller’s Interest Percentage	7.000%
18.  Attached hereto is a true and correct copy of the statement required to be delivered by the Servicer on the date of this Certificate to the Trustee in respect of each Series outstanding pursuant to Section 5.02(a) of the Agreement, if applicable
19.  As of the date hereof, to the best knowledge of the undersigned, no default in the performance of the obligation of the Servicer under the pooling and Servicing Agreement has occurred or is continuing except as follows	NONE
20.  As of the date hereof no Liquidation Event has been deemed to have occurred for the Due Period for the Distribution Date with respect to any Series
21.  As of the date hereof, to the best of the knowledge of the undersigned, no Lien has been placed on any of the Receivables other than the Lien granted by the Pooling and Servicing Agreement
22.  During the preceding calendar month, the number of newly—originated Accounts was	0

MONTHLY SERVICER’S CERTIFICATE

Signature Page

IN WITNESS WHEREOF, the undersigned have duly executed and delivered this certificate the date first set forth above.

Bank One, Delaware, National Association

as Servicer

By:	/s/ MICHAEL J. GRUBB
	Michael J Grubb Title:    First Vice President

EX-28.C

Exhibit 28C

CERTIFICATEHOLDER’S PAYMENT DATE STATEMENT

Bank One, Delaware, National Association

First Chicago Master Trust II

Series 1999-X

February 12, 2003

Under the Pooling and Servicing Agreement (the “Pooling and Servicing Agreement”) dated as of June 1, 1990 as amended and restated as of September 1, 1999, by and between Bank One, Delaware, National Association, as Seller and Servicer (“the Bank”), and Norwest Bank Minnesota, National Association, as Trustee, (the “Trustee”), as amended and supplemented by the Series 1999-X Supplement dated as of June 1, 1999 by and between the Bank and the Trustee, the Bank, as Servicer, is required to prepare certain information for each Payment Date regarding current distributions to Class A Certificateholders and the performance of the First Chicago Master Trust II (the “Trust”) during the previous period. The information which is required to be prepared with respect to the distribution on the February 18, 2003 Payment Date and with respect to the performance of the Trust during the Due Period for such Payment Date is set forth below. Certain of the information is presented on the aggregate amounts for the Trust as a whole. All capitalized terms used herein shall have the respective meanings set forth in the Pooling and Servicing Agreement.

A.  Information Regarding the Current Distribution (Stated on the Basis of $1,000 Original Principal Amount)
1.  The total amount of the distribution to Class A Certificateholders on the Payment Date per $1,000 interest	$1.436
2.  The amount of the distribution set forth in paragraph 1 above in respect of principal on the Class A Certificates, per $1,000 interest.	$0.000
3.  The amount of the distribution set forth in paragraph 1 above in respect of interest on the Class A Certificates, per $1,000 interest.	$1.436
B.  Information Regarding the Performance of the Trust
1.  Collections of Receivables
a.  The aggregate amount of Collections of Receivables processed for the Due Period with respect to the current Distribution Date which were allocated in respect of the Investor Certificates of all Series	$469,415,849.25
b.  The aggregate amount of Collections of Receivables processed for the Due Period with respect to the current Distribution Date which were allocated in respect of the Series 1999-X Certificates	$269,924,539.11
c.  The aggregate amount of Collections of Receivables processed for the Due Period with respect to the current Distribution Date which were allocated in respect of the Class A Certificates	$236,205,062.42
d.  The amount of Collections of Receivables processed for the Due Period with respect to the current Distribution Date which were allocated in respect of the Class A Certificates, per $1,000 interest	$314.940
e.  The amount of Excess Spread for the Due Period with respect to the current Distribution Date	$6,227,750.58
f.  The amount of Reallocated Principal Collections for the Due Period with respect to the current Distribution Date allocated in respect of the Class A Certificates	$0.00
g.  The amount of Excess Finance Charge Collections allocated in respect of the Series 1999-X Certificates, if any	$0.00
h.  The amount of Excess Principal Collections allocated in respect of the Series 1999-X Certificates, if any	$0.00

Series 1999-X

2.  Receivablesin Trust
a.  Aggregate Principal Receivables for the Due Period with respect to the current Distribution Date (which reflects the Principal Receivables represented by the Exchangeable Seller’s Certificate and by the Investor Certificates of all Series)	$11,030,653,139.26
b.  The amount of Principal Receivables in the Trust represented by the Series 1999-X Certificates (the “Adjusted Invested Amount”) for the Due Period with respect to the current Distribution Date	$712,634,186.13
c.  The amount of Principal Receivables in the Trust represented by the Class A Certificates (the “Class A Adjusted Invested Amount”) for the Due Period with respect to the current Distribution Date	$625,000,000.00
d.  The Invested Amount for the Due Period with respect to the current Distribution Date	$837,634,186.13
e.  The Class A Invested Amount for the Due Period with respect to the current Distribution Date	$750,000,000.00
f.  The Invested Percentage with respect to Finance Charge Receivables (including Interchange) and Defaulted Receivables for the Series 1999-X Certificates for the Due Period with respect to the current Distribution Date	6.460%
g.  The Invested Percentage with respect to Principal Receivables for the Series 1999-X Certificates for the Due Period with respect to the current Distribution Date	7.771%
h.  The Class A Floating Percentage for the Due Period with respect to the current Distribution Date	87.703%
i.  The Class A Principal Percentage for the Due Period with respect to the current Distribution Date	87.500%
j.  The Collateral Floating Percentage for the Due Period with respect to the current Distribution Date	12.297%
k.  The Collateral Principal Percentage for the Due Period with respect to the current Distribution Date	12.500%
3.  Delinquent Balances
The aggregate amount of outstanding balances in the Accounts which were 30 or more days delinquent as of the end of the Due Period for the current Distribution Date	$419,850,102.29
4.  Investor Default Amount
a.  The aggregate amount of all Defaulted Receivables written off as uncollectible during the Due Period with respect to the current Distribution Date allocable to the Series 1999-X Certificates (the “Investor Default Amount”)
1.  Investor Default Amount	$3,446,824.82
2.  Recoveries	$202,411.71
3.  Net Default Receivables	$3,244,413.11
b.  The Class A Investor Default Amount
1.  Investor Default Amount	$3,022,961.23
2.  Recoveries	$177,520.70
3.  Net Default Receivables	$2,845,440.53

Series 1999-X

c.  The Collateral Investor Default Amount
1.  Investor Default Amount	$423,863.59
2.  Recoveries	$24,891.01
3.  Net Default Receivables	$398,972.58
5.  Investor Charge-offs
a.  The amount of the Class A Investor Charge-Offs per $1,000 interest after reimbursement of any such Class A Investor Charge-Offs for the Due Period with respect to the current Distribution Date	$0.00
b.  The amount attributable to Class A Investor Charge-Offs, if any, by which the principal balance of the Class A Certificates exceeds the Class A Adjusted Invested Amount as of the end of the day on the Record Date with respect to the current Distribution Date	$0.00
c.  The amount of the Collateral Charge-Offs, if any, for the Due Period with respect to the current Distribution Date	$0.00
6.  Monthly Servicing Fee
a.  The amount of the Monthly Servicing Fee payable from available funds by the Trust to the Servicer with respect to the current Distribution Date	$148,465.46
b.  The amount of the Interchange Monthly Servicing Fee payable to the Servicer with respect to the current Distribution Date	$742,327.28
7.  Available Cash Collateral Amount
a.  The amount, if any, withdrawn from the Cash Collateral Account for the current Distribution Date (the “Withdrawal Amount”)	$0.00
b.  The amount available to be withdrawn from the Cash Collateral Account as of the end of the day on the current Distribution Date, after giving effect to all withdrawals, deposits and payments to be made on such Distribution Date (the “Available Cash Collateral Amount” for the next Distribution Date)	$8,571,429.00
c.  The amount as computed in 7.b as a percentage of the Class A Adjusted Invested Amount after giving effect to all reductions thereof on the current Distribution Date	1.714%

Series 1999-X

8.  Collateral Invested Amount
a.  The Collateral Invested Amount for the current Distribution Date	$87,634,186.13
b.  The Collateral Invested Amount after giving effect to all withdrawals, deposits, and payments on the current Distribution Date	$68,125,515.61
9.  Total Enhancement	$96,205,615.13
a.  The total Enhancement for the current Distribution Date
b.  The total Enhancement after giving effect to all withdrawals, deposits, and payments on the current Distribution Date	$76,696,944.61
C.  The Pool Factor
The Pool Factor (which represents the ratio of the Class A Invested Amount on the last day of the month ending on the Record Date adjusted for Class A Investor Charge-Offs set forth in B.5.a above and for the distributions of principal set forth in A.2 above to the Class A Initial Invested Amount). The amount of Class A Certificateholder’s pro rata share of the Class A Invested Amount can be determined by multiplying the original denomination of the holder’s Class A Certificate by the Pool Factor	100.00000%
D.  Principal Funding Account
1.  The Principal Funding Investment Proceeds deposited in the Collection   Account for the current Distribution Date to be treated as Class A   Available Funds	$75,138.62
2.  The Excess Principal Funding Investment Proceeds for the current   Distribution Date	$0.00
3.  The Principal Funding Account Balance as of the end of the day on the   current Distribution Date	$250,000,000.00
4.  The Deficit Controlled Amortization Amount for the preceding Due Period	$0.00
E.  Reserve Account
1.  The Reserve Draw Amount for the current Distribution Date	$0.00
2.  The amount on deposit in the Reserve Account as of the end of the day on the   current Distribution Date (the “Available Reserve Account Amount” for the   next Distribution Date)	$1,875,000.00

Bank One, Delaware, National Association

as Servicer

By:	/s/ MICHAEL J. GRUBB
	Michael J. Grubb
	Title:    First Vice President

EX-28.D

Exhibit 28D

CERTIFICATEHOLDER’S PAYMENT DATE STATEMENT

Bank One, Delaware, National Association

First Chicago Master Trust II

Series 1999-Y

February 12, 2003

Under the Pooling and Servicing Agreement (the “Pooling and Servicing Agreement”) dated as of June 1, 1990 as amended and restated as of September 1, 1999, by and between Bank One, Delaware, National Association, as Seller and Servicer (“the Bank”), and Norwest Bank Minnesota, National Association, as Trustee, (the “Trustee”), as amended and supplemented by the Series 1999-Y Supplement dated as of August 10, 1999 by and between the Bank and the Trustee, the Bank, as Servicer, is required to prepare certain information for each Payment Date regarding current distributions to Class A Certificateholders and the performance of the First Chicago Master Trust II (the “Trust”) during the previous period. The information which is required to be prepared with respect to the distribution on the February 18, 2003 Payment Date and with respect to the performance of the Trust during the Due Period for such Payment Date is set forth below. Certain of the information is presented on the aggregate amounts for the Trust as a whole. All capitalized terms used herein shall have the respective meanings set forth in the Pooling and Servicing Agreement.

A. Information Regarding the Current Distribution (Stated on the Basis of $1,000 Original Principal Amount)
1.  The total amount of the distribution to Class A Certificateholders on the Payment Date per $1,000 interest.	$1.483
2.  The amount of the distribution set forth in paragraph 1 above in respect of principal on the Class A Certificates, per $1,000 interest.	$0.000
3.  The amount of the distribution set forth in paragraph 1 above in respect of interest on the Class A Certificates, per $1,000 interest.	$1.483
B.  Information Regarding the Performance of the Trust
1.  Collections of Receivables
a.  The aggregate amount of Collections of Receivables processed for the Due Period with respect to the current Distribution Date which were allocated in respect of the Investor Certificates of all Series	$469,415,849.25
b.  The aggregate amount of Collections of Receivables processed for the Due Period with respect to the current Distribution Date which were allocated in respect of the Series 1999-Y Certificates	$199,491,310.13
c.  The aggregate amount of Collections of Receivables processed for the Due Period with respect to the current Distribution Date which were allocated in respect of the Class A Certificates	$174,554,896.24
d.  The amount of Collections of Receivables processed for the Due Period with respect to the current Distribution Date which were allocated in respect of the Class A Certificates, per $1,000 interest	$317.373
e.  The amount of Excess Spread for the Due Period with respect to the current Distribution Date	$5,567,145.82
f.  The amount of Reallocated Principal Collections for the Due Period with respect to the current Distribution Date allocated in respect of the Class A Certificates	$0.00
g.  The amount of Excess Finance Charge Collections allocated in respect of the Series 1999-Y Certificates, if any	$0.00
h.  The amount of Excess Principal Collections allocated in respect of the Series 1999-Y Certificates, if any	$0.00

Series 1999-Y

2.  Receivables in Trust
a.  Aggregate Principal Receivables for the Due Period with respect to the current Distribution Date (which reflects the Principal Receivables represented by the Exchangeable Seller’s Certificate and by the Investor Certificates of all Series)	$11,030,653,139.26
b.  The amount of Principal Receivables in the Trust represented by the Series 1999-Y Certificates (the “Adjusted Invested Amount”) for the Due Period with respect to the current Distribution Date	$628,571,429.00
c.  The amount of Principal Receivables in the Trust represented by the Class A Certificates (the “Class A Adjusted Invested Amount”) for the Due Period with respect to the current Distribution Date	$550,000,000.00
d.  The Invested Amount for the Due Period with respect to the current Distribution Date	$628,571,429.00
e.  The Class A Invested Amount for the Due Period with respect to the current Distribution Date	$550,000,000.00
f.  The Invested Percentage with respect to Finance Charge Receivables (including Interchange) and Defaulted Receivables for the Series 1999-Y Certificates for the Due Period with respect to the current Distribution Date	5.698%
g.  The Invested Percentage with respect to Principal Receivables for the Series 1999-Y Certificates for the Due Period with respect to the current Distribution Date	5.698%
h.  The Class A Floating Percentage for the Due Period with respect to the current Distribution Date	87.500%
i.  The Class A Principal Percentage for the Due Period with respect to the current Distribution Date	87.500%
j.  The Collateral Floating Percentage for the Due Period with respect to the current Distribution Date	12.500%
k.  The Collateral Principal Percentage for the Due Period with respect to the current Distribution Date	12.500%
3.  Delinquent Balances
The aggregate amount of outstanding balances in the Accounts which were 30 or more days delinquent as of the end of the Due Period for the current Distribution Date	$419,850,102.29
4.  Investor Default Amount
a.  The aggregate amount of all Defaulted Receivables written off as uncollectible during the Due Period with respect to the current Distribution Date allocable to the Series 1999-Y Certificates (the “Investor Default Amount”)
1.  Investor Default Amount	$3,040,235.29
2.  Recoveries	$178,535.10
3.  Net Default Receivables	$2,861,700.19
b.  The Class A Investor Default Amount
1.  Investor Default Amount	$2,660,205.88
2.  Recoveries	$156,218.21
3.  Net Default Receivables	$2,503,987.67

Series 1999-Y

c.  The Collateral Investor Default Amount
1.  Investor Default Amount	$380,029.41
2.  Recoveries	$22,316.89
3.  Net Default Receivables	$357,712.52
5.  Investor Charge-offs
a.  The amount of the Class A Investor Charge-Offs per $1,000 interest after reimbursement of any such Class A Investor Charge-Offs for the Due Period with respect to the current Distribution Date	$0.00
b.  The amount attributable to Class A Investor Charge-Offs, if any, by which the principal balance of the Class A Certificates exceeds the Class A Adjusted Invested Amount as of the end of the day on the Record Date with respect to the current Distribution Date	$0.00
c.  The amount of the Collateral Charge-Offs, if any, for the Due Period with respect to the current Distribution Date	$0.00
6.  Monthly Servicing Fee
a.  The amount of the Monthly Servicing Fee payable from available funds by the Trust to the Servicer with respect to the current Distribution Date	$130,952.38
b.  The amount of the Interchange Monthly Servicing Fee payable to the Servicer with respect to the current Distribution Date	$654,761.91
7.  Available Cash Collateral Amount
a.  The amount, if any, withdrawn from the Cash Collateral Account for the current Distribution Date (the “Withdrawal Amount”)	$0.00
b.  The amount available to be withdrawn from the Cash Collateral Account as of the end of the day on the current Distribution Date, after giving effect to all withdrawals, deposits and payments to be made on such Distribution Date (the “Available Cash Collateral Amount” for the next Distribution Date)	$6,285,715.00
c.  The amount as computed in 7.b as a percentage of the Class A Adjusted Invested Amount after giving effect to all reductions thereof on the current Distribution Date	1.143%

Series 1999-Y

8.  Collateral Invested Amount
a.  The Collateral Invested Amount for the current Distribution Date	$78,571,429.00
b.  The Collateral Invested Amount after giving effect to all withdrawals, deposits, and payments on the current Distribution Date	$78,571,429.00
9.  Total Enhancement
a.  The total Enhancement for the current Distribution Date	$84,857,144.00
b.  The total Enhancement after giving effect to all withdrawals, deposits, and payments on the current Distribution Date	$84,857,144.00
C.  The Pool Factor
The Pool Factor (which represents the ratio of the Class A Invested Amount on the last day of the month ending on the Record Date adjusted for Class A Investor Charge-Offs set forth in B.5.a above and for the distributions of principal set forth in A.2 above to the Class A Initial Invested Amount). The amount of Class A Certificateholder’s pro rata share of the Class A Invested Amount can be determined by multiplying the original denomination of the holder’s Class A Certificate by the Pool Factor	100.00000%
D.  Principal Funding Account
1.  The Principal Funding Investment Proceeds deposited in the Collection Account for the current Distribution Date to be treated as Class A Available Funds	$0.00
2.  The Excess Principal Funding Investment Proceeds for the current Distribution Date	$0.00
3.  The Principal Funding Account Balance as of the end of the day on the current Distribution Date	$0.00
4.  The Deficit Controlled Amortization Amount for the preceding Due Period	$0.00
E.  Reserve Account
1.  The Reserve Draw Amount for the current Distribution Date	$0.00
2.  The amount on deposit in the Reserve Account as of the end of the day on the current Distribution Date (the “Available Reserve Account Amount” for the next Distribution Date)	$1,375,000.00

Bank One, Delaware, National Association

as Servicer

By:	/s/ MICHAEL J. GRUBB
	Michael J. Grubb Title:    First Vice President