HEADLINE NEWS
YF-23 Prototype Undergoes Flutter Tests, May Finish Flight Evaluations Next Month
LANCASTER, CALIF. The Northrop/McDonnell Douglas team expects to fly a total of about 30 test flights on its two YF-23 prototypes, possibly concluding demonstration/validation flight tests in November. The first aircraft, known as Prototype Air Vehicle One (PAV-1), started flutter clearance tests Oct. 9 on the 10th flight.
By WILLIAM B. SCOTT