The 17th annual Opera Awards National Vocal Competition, sponsored by the Loren L. Zachary Society, will take place in Los Angeles, April 17-May 21, 1989. To be eligible, singers must be between the ages of 21 and 33, have completed training and be ready to pursue professional stage careers.

First prize will be a round-trip ticket to Europe to audition, plus $3,000. Total cash awards for finalists will be approximately $18,000. Requests for applications should be sent, with a self-addressed, stamped business-size envelope, to Loren L. Zachary Society, 2250 Gloaming Way, Beverly Hills, Calif. 90210. The deadline is April 3.