MINNEAPOLIS - Northwest Airlines' defined contribution pension plan does not discriminate based on age in violation of the Employee Retirement Income Security Act or the Age Discrimination in Employment Act (ADEA), even though the formula for determining a participant's benefit level includes factors that are "correlated with age," the Eighth Circuit U.S. Court of Appeals affirmed April 9 (Northwest Airlines, Inc., et al. v. Raymond B. Phillips, et al., No. 11-1730, 8th Cir.; 2012 U.S. App. LEXIS 7072).