FORT MONMOUTH — The crew of a Fort Monmouth Army helicopter testing ground locator avionics equipment from a British manufacturer reports satisfactory performance — but based on an eerie experience, . While on a flight from Lakehurst Naval Air Station, home base, Friday, pilot Stanley Butryn and engineer Frank Del Vecchio, both civilians, spotted an abandoned ‘car in a dense woods in Berkeley Township, . Flying low, they observed the car was ‘closed except to admit two hose lines which had been connected to rear ex haust pipes. The body of a man was seen Inside. Mr. Butryn’s craft had no equipment’to lower’ an observer 80 a radio alarm to Lakehurst brought out a Navy helicopter with a drop ladder. In a few minutes, a Navy man Chief Parachute Rigger George Gowan, confirmed that the man In the car was dead, ' . ‘Both ‘choppers’ made contact with’ Berkeley Township police and guided them down a narrow fire lane to the se cluded auto. The man was identified as Keith Rector, 41, of Lakehurst, father of eight, who had been missing six weeks. His death, which occurred about a week ago, was termed as suicide by Coroner Wallace A. Polhemus. A silent observer to the operation was Edward Fairhead, a representative of Decca Navigation Co., of England, whose equipment installed on Butryn’s helicopter performed perfectly under what’ turned out'to be field conditions.