Amsouth Bancorp. is bringing in an outsider to head its brokerage  division. 
Noah Zecher will join as chief executive officer of the Birmingham,  Ala.-based banking company's Amsouth Investment Services unit in mid-   December. He arrives from First of America Bank Corp., Kalamazoo, Mich.,   where he was national sales manager of brokerage and trust.     
  
Mr. Zecher will report to Michael C. Baker, senior executive vice  president at the bank and head of Amsouth's capital management group. 
Lincoln B. Yersin, who was president, chief executive, and chairman of  Amsouth Investment Services, will remain as president. He will report to   Mr. Zecher.   
  
Mr. Zecher, who gave notice at First of America Nov.  21, declined to comment about his departure. He plans to leave his job Dec.   6 and begin at Amsouth Dec. 16, he said.   
His boss at First of America, executive vice president John Rap, said  Mr. Zecher has not yet been replaced. 
The 45-year-old Mr. Zecher came to First of America in mid-1994 after  several years as national sales manager with KeyCorp. A native New Yorker   who grew up in nearby New Rochelle, he cut his teeth as a financial   consultant at Merrill Lynch & Co.     
  
Mr. Zecher joins a brokerage business at Amsouth that expanded in  Alabama, Georgia, Tennessee, and Florida under Mr. Yersin's leadership, Mr.   Baker said.   
Mr. Baker also credited Mr. Yersin with helping the brokerage  straighten out compliance problems left behind by a previous management   team.   
"We are trying to put all the players in the right positions in order to  continue the momentum this subsidiary has achieved in the last year," Mr.   Baker said.   
He was quick to add that he is confident in Mr. Yersin, whom he expects  to remain at Amsouth. Mr. Baker said he does not expect any more management   changes at the broker-dealer in the near future.   
  
Mr. Yersin was unavailable for comment.