Exhibit 99.24 MBNA MASTER CREDIT CARD TRUST II SERIES 1997-F KEY PERFORMANCE FACTORS November 30, 1999 Expected B Maturity 6/17/02 Blended Coupon 6.4817% Excess Protection Level 3 Month Average 6.02% November, 1999 5.88% October, 1999 6.26% September, 1999 5.91% Cash Yield 18.33% Investor Charge Offs 4.89% Base Rate 7.56% Over 30 Day Delinquency 5.02% Seller's Interest 8.52% Total Payment Rate 14.09% Total Principal Balance $48,461,894,441.68 Investor Participation Amount $706,000,000.00 Seller Participation Amount $4,130,074,923.19