Atlas Air has reached a long-term agreement to provide freighter service for Alitalia, using one of its Boeing 747-200 all-cargo aircraft.

Under the agreement, Atlas will provide the aircraft, crew, maintenance and insurance. The three-year deal takes effect June 15.The aircraft is one of two that Atlas acquired from Philippine Airlines and which is being converted from passenger to freighter configuration at the Boeing Modification Center in Wichita, Kan. Alitalia also contracted for additional peak-season capacity in the third and fourth quarters of 1998.

Atlas, based in Golden, Colo., provides similar service for British Airways, China Airlines, Emirates, Fast Air, KLM Royal Dutch Airlines, Lufthansa German Airlines, Scandinavian Airlines System and Thai International Airways.

FEDERAL EXPRESS CORP. said the new bilateral aviation agreement reached last week with France will enable it to expand its European hub at Charles de Gaulle Airport in Paris.

''This agreement is a significant step for FedEx,'' said Theodore L. Weise, president and chief executive of FedEx. The deal will put the carrier ''in a better position to fulfill our customers' intercontinental shipping needs.''

BRITISH AIRWAYS WORLD CARGO will continue to offer freight services to South Korea and Sri Lanka this summer, despite the airline's decision to suspend flights to Seoul and Colombo because of falling passenger demand.

BA Cargo's longstanding weekly Boeing 747 freighter joint venture with Korean Air will continue to operate from London Heathrow Airport on Mondays, giving shippers access to about 30 metric tons of capacity in each direction.

The carrier also has introduced a twice-weekly freighter service on a trial basis to and from Sri Lanka. The flight departs Colombo on Wednesdays and Sundays with stops in the Middle East, including Dubai in the United Arab Emirates, where cargo connects with BA's own international services. The Sri Lanka service will use an Antonov 12, with 15 metric tons of capacity.

DAIMLER-BENZ AEROSPACE, the German partner in the Airbus Industrie consortium, said in its annual report that the European aircraft maker made a net profit of 267.9 million Deutsche marks ($147.2 million) in 1997.

Net profit at the four-country consortium fell from $377 million in 1996, DASA's report, published last week, said. Sales grew to $11.36 million from $6.78 million in the same period.

DASA holds 37.9 percent of Airbus, which groups DASA, France's Aerospatiale SpA, British Aerospace PLC and Construcciones Aeronauticas SA of Spain and is based in Toulouse, France.

ENVIROTAINER INC., a supplier of temperature-controlled air cargo containers, is testing a cleaning system designed to provide an environmentally safe method of sanitizing its temperature-controlled equipment for perishables, pharmaceuticals and fine art.

The cleaning system, distributed by Red Rose Inc. of Zebulon, N.C., uses an all-natural derivative of citrus peel in a steam solution or under high pressure to clean and deodorize the containers.

If the tests at Envirotainer's facility in Los Angeles are successful, the company will use the citrus-extract cleaner at its stations worldwide to sanitize containers after each trip lease.

AIR FRANCE, adding a DC-10 freighter and a new Boeing 777 to its fleet, is increasing its cargo capacity on North American, Asian and African routes this summer.

The airline's summer schedule, launched last week, includes a fifth Boeing 747 freighter service from New York's John F. Kennedy International Airport on Tuesdays. The new 777, which can carry up to 13 metric tons of cargo, made its maiden flight Thursday on its Paris-New York route.

Air France in June also will increase capacity on its Houston-Paris run with the addition of an Airbus A340. That aircraft will replace a Boeing 767.

A weekly DC-10 freighter also has been added on the Paris-Montreal route.