Mamady Lamine Conde, ambassador of the People's Revolutionary Republic of Guinea to the United States, contends in a lawsuit filed yesterday that an airline is respon w0050 ----- r d BC-04/26/83-GOLD 04-26 0001 Guinean Ambassador Sues Airline In Loss of Gold Valued at $16,000

Mamady Lamine Conde, ambassador of the People's Revolutionary Republic of Guinea to the United States, contends in a lawsuit filed yesterday that an airline is responsible for the loss of his briefcase that contained, among other things, a kilogram of gold valued at $16,000.

Conde explained in the suit that he had forgotten to bring the briefcase to Dulles Airport in February 1982, for a flight to Paris.

In the suit filed against Air France in D.C. Superior Court, Conde said an agent of the airline agreed to deliver the briefcase to him in France personally after it had been flown from Washington to New York.

According to the suit, Conde waited for the agent at the airport in Paris the next day and was told that the agent had indeed brought the briefcase, but that it had been stolen.

Conde gave a sworn statement to airport police contending that the case had contained "secret diplomatic papers," the gold, a gold pen worth $400, a gold watch worth $300 and an antique Islamic rosary with gold and onyx stone beads valued at $1,000.

A legal representative for Air France in New York, Joan Gabel, said: "We don't acknowledge anything. I really don't have any comment."

Conde was unavailable for comment.