Qantas Airways Speeds

Buying of Boeing 767sQantas Airways of Australia has purchased a fourth Boeing Co. 767-300, valued at $70 million, for delivery in December.

Qantas is taking delivery of all four airplanes this year because of stronger than expected demand on its international routes. Originally, only one of Qantas' four-airplane order was scheduled for 1988 delivery.

The Qantas planes will be equipped with General Electric Co. CF6-80C2 engines.

Runway Work to Affect

Detroit Airport in April

DETROIT - Construction work on the 993-foot extension of the main runway at the Detroit City Airport will require periodic closures of one or both of its runways until May 9.

The work is being done to upgrade the airport, which now is a general aviation facility, so it can accommodate commercial flights.

The airport will have only one runway open through May 9. It will be completely closed again for a week beginning April 8. The disruption in airport operations is required to complete paving work on the airport's main


Meanwhile, Detroit has filed a new environmental assessment with the Federal Aviation Administration spelling out details of a proposed runway safety area to allow resumption ofcommercial air service at the airport.

Southwest Airlines, in cooperation with the Federal Aviation Administration , has agreed upon a plan that will enable it to begin service at the facility this summer.

The compromise plan will permit the city to construct terminal and runway improvements according to an FAA-approved design.

Traffic Reports

Presidential Airways Inc. reported it flew 19 million revenue passenger- miles, down sharply from 49 million RPMs in the year earlier month, when the carrier was operating as Continental Express. Load factor for February was 35.9 percent, down from 66.8 percent a year earlier.