A Japanese airline ordered seven Douglas jets.

Toa Domestic Airlines also took options on four additional McDonnell Douglas jetliners in a deal worth about $300 million, the companies announced. TDA ordered three MD-81s and four smaller MD-87s to expand the airline’s domestic service. The options are for MD-81s. TDA President Toshihiko Kubota also said his airline, which currently flies only in Japan, and American Airlines, which flies no farther west than Hawaii, have agreed to cooperate in trying to extend their services across the Pacific.