AD 67-03-03

67-03-03 HOWARD AND LOCKHEED: Amdt. 39-339 Part 39 Federal Register January 18, 1967. Applies to All Howard Model 500 Series Airplanes and Lockheed Model PV-1 Series Airplanes, Serial Numbers 5275, 5336, 5892, 5492, 5331, 5599, 5272, 5372, 5283, 4385, 4401, 6642, 5373, 5500, 5554, 5560, 5494, 5280, 5700, 5598, 5696, 5894, 2020, 5591, 5267, 5702, 5694, 5887, 5891, 5705, 5371, 5489, 5492, 5274, and 5269.

Compliance required as indicated.

To detect cracked elevator torque tube collars, P/N 5-408380-1, unless already accomplished, within the next 10 hours' time in service after the effective date of this AD, and thereafter at intervals not to exceed 100 hours' time in service from the date of the last inspection, inspect the elevator torque tube collars P/N 5-408380-1 for cracks in the radius using dye penetrant or an FAA-approved equivalent. Before further flight, replace parts found cracked in accordance with Dee Howard Company, San Antonio, Texas, Drawing Number 13-0766-008 or later FAA Engineering and Manufacturing Branch approved equivalent. The inspection provisions of this AD may be discontinued when P/N 5-408380-1 is replaced in accordance with this AD.

This directive effective January 23, 1967.