Nimbus Group, the Fort Lauderdale, Fla. firm that had until recently maintained its intention of buying very light jets to establish a nationwide air-taxi service, named Dr. Michael Wellikoff chairman and interim CEO. Wellikoff, a dentist, replaced Ilia Lekach, under whom the company last year failed to obtain financing to complete a highly promoted purchase of 1,000 Eclipse 500 very light twinjets. In a statement, the company said it would focus on wholesale fragrance distribution. AIN was unable to contact the company at press time.