Exhibit 99.24 MBNA MASTER CREDIT CARD TRUST II SERIES 1998-A KEY PERFORMANCE FACTORS February 28, 2001 Expected B Maturity 3/17/03 Blended Coupon 5.7213% Excess Protection Level 3 Month Average 4.95% February, 2001 7.52% January, 2001 6.93% December, 2000 0.38% Cash Yield19.48% Investor Charge Offs 4.62% Base Rate 7.34% Over 30 Day Delinquency 5.13% Seller's Interest 8.26% Total Payment Rate13.44% Total Principal Balance$57,174,868,500.05 Investor Participation Amount$750,000,000.00 Seller Participation Amount$4,724,177,938.56