Exhibit 99.28 MBNA MASTER CREDIT CARD TRUST II SERIES 1998-D KEY PERFORMANCE FACTORS September 30, 2000 Expected B Maturity 7/15/03 Blended Coupon 5.9181% Excess Protection Level 3 Month Average 6.00% September, 2000 5.95% August, 2000 5.79% July, 2000 6.25% Cash Yield19.26% Investor Charge Offs 4.49% Base Rate 8.81% Over 30 Day Delinquency 4.99% Seller's Interest 8.50% Total Payment Rate13.85% Total Principal Balance$54,293,652,263.17 Investor Participation Amount$559,000,000.00 Seller Participation Amount$4,612,451,744.68