In a single-engine Cessna 210, 10-year-old Tony Aliengena plans to pilot his family to a scheduled meeting with Soviet leader Mikhail Gorbachev.

Aliengena, of Newport Beach, Calif., plans to be the first civilian to ever fly through the Soviet Union. That distinction will be added to the three world aviation records he already holds. His Friendship Flight '89 - destination Moscow - is set for takeoff June 5, and will include a stopover in Salt Lake City.His parents, Gary and Susan, and his sister, Alaina, will also be along on the world trip to help Tony deliver a friendship letter signed by American kids and thousands of letters to Soviet children.

Youths under the age of 17 are invited to send letters to Tony Aliengna's school for special delivery to a Soviet child. Each one-page letter should include a self-addressed envelope, and should be addressed to Friendship Flight '89, St. Margaret's School, 31641 La Novia, San Juan Capistrano, Ca., 92675. The outside of the envelope should be marked with the sex and the age of the Soviet recipient.