4 Airworthiness Directives: 3 airplane, 1 glider.
AD 61-12-01 · published Jun 3, 1961, effective Jun 9, 1961
The Boeing Company Airplanes
AD 61-13-01 · published Jun 20, 1961, effective Jun 20, 1961
D & R Nevada LLC Airplanes
AD 61-13-03 · published Jun 24, 1961, effective Jun 24, 1961
Alexander Schleicher GmbH & Co. Gliders