The delinquency rate on bank credit cards dipped in the fourth quarter  of 1997 to its lowest level since 1994, according to the American Bankers   Association.   
Of total card accounts at banks responding to the latest ABA survey,  3.04% were at least 30 days past due. That was down from 3.53% in the third   quarter, and 3.72% in the fourth quarter of 1996, which was the record   high.     
  
Some economists were heartened by the pronounced improvement in what has  been a disturbing indicator of consumer financial health. But others   questioned whether credit quality had truly improved. Though the percentage   of delinquent accounts decreased, the percentage of dollars in arrears   increased for the second quarter in a row, to 5.38%, from 5.31% in the   third quarter and 5.24% at midyear 1996.         
American Bankers Association chief economist James Chessen said the  discrepancy may mean consumers with low credit card balances are paying   them off, and those with higher balances are still rolling them over.   
  
The new numbers show "a surprisingly strong downward movement," he  maintained. "We want to be careful about saying too much about one   quarter's decline, but I think it is a very positive sign."   
The trends were not as favorable in some other loan categories the ABA  tracks. 
Delinquent home equity loans rose to 1.49% in the fourth quarter, from  1.32% in the third and 1.42% at yearend 1996. Mr. Chessen said he was   concerned that consumers are converting "short-term credit card obligations   into these longer-term home equity products."     
  
The ABA found a higher percentage of delinquencies among direct auto  loans-2.29% in the fourth quarter, versus 2.16% in the third. But there was   improvement in the indirect loans made through dealers, to 2.46%, from   2.62%.     
The ABA's composite of eight types of closed-end loans also sent a mixed  message. The percentage of delinquent accounts dropped-to 2.43%, from 2.52%   in the third quarter-but the ratio of delinquent dollars rose, to 2.20%,   from 2.03%.     
Warren Heller, research director of Veribanc Inc., Wakefield, Mass.,  said the rising dollar figures are troubling, as are growing delinquency   rates in categories other than credit cards.   
Until recently, "the problems have been pretty much restricted to credit  card delinquency, and others have been flat," Mr. Heller said. "This could   indicate problems are picking up in other areas of consumer lending."   
  
Michael R. Dean, director of the credit card group at the Fitch IBCA  rating agency, said the ABA's fourth-quarter delinquency figure seemed   "artificially low." He said banks were busy adding new accounts, and   delinquencies from those accounts had not begun to register. Given the   larger pool of customers, the percentage of delinquent accounts fell, he   said.         
Banks were far less eager to book new loans in 1996, Mr. Dean said, when  delinquency percentages were higher. The following year, he said, card   issuers sent out a record three billion mail solicitations.   
James Annable, chief economist at First Chicago NBD Corp., viewed the  ABA's findings as "definitely good news. We've always seen the pool of   receivables going up, and delinquencies were going up too."   
Mr. Annable said card issuers have "really recognized the problem" and  changed their lending standards. But credit problems are cyclical, and   conditions could change quickly.   
"It's not a time to relax or think that the battle has been won," Mr.  Annable said. "The real test will be when unemployment begins to rise." 
David A. Levy, economist and director of forecasting at the Jerome Levy  Economics Institute, Mount Kisco, N.Y., agreed with Mr. Dean's more bearish   hypothesis. But he said larger account pools did not tell the whole story,   since the portfolios would have had to grow enormously to dwarf the number   of delinquent accounts. Lenders spent 1997 "aggressively writing off"   subprime loans.         
The ABA numbers "do not indicate that consumers are in better shape or  that exposure to the delinquencies is lower than before," Mr. Levy said.   "This is more of a recognition that some of those delinquencies just   weren't going to be paid off."     
Mr. Levy sounded the familiar warning that an economic downturn would  spell disaster for credit card lenders. 
"We're looking at the strongest income growth and the strongest  employment we've had in a while-you would expect consumers to be in good   shape," he said. "If, as we predict, the economy is going to bog down   somewhat, there may be more people joining the ranks of the delinquent."     
Mr. Chessen of the ABA said the industry has been realistic, writing off  bad consumer loans "pretty steadily" and mitigating risk through   securitization.   
Mr. Chessen cited a decline in the total revolving credit that banks are  extending: $208 billion in January 1998, versus $223.3 billion a year   earlier.   
"Banks have tightened their consumer lending standards for nine straight  quarters, and that's pretty significant," Mr. Chessen said. As a result,   "we finally have a strong indication that we've turned the corner on   delinquencies."