1. Angel wings drop their leaves with too much or too little water. 2. In an adult moth, the body hardens and the wings drop off. 3. The F-35C's wing drop problem is " worse than other variants ". 4. Something called " wing drop " first appeared on test flights in early 1996. 5. Wing drop can't be detected in traditional wind tunnel testing.6. Exposed birds exhibited ataxia, wing drop , opisthotonos, immobility, hyperactivity, fluid-filled crops and intestines, and discolored livers. 7. "We'll go forward when we have a solution to the wing drop issue, " he said. 8. In a roll, when one wing drops , the plane loses lift and the nose points down. 9. The " wing drop " problem was supposed to have been fixed, McGrath said . _ _ _= 10. The so-called " wing drop " problem was first noticed during flight testing more than six months ago.