49-12-01 CURTISS-WRIGHT Applies to Model C-46 Series aircraft equipped with Aileron Tab Motor Bracket Assembly, Curtiss-Wright P/N 20-030-5050.
Compliance required within 25 hours' time in service after the effective date of this amendment, unless already accomplished within the last 475 hours' time in service, and at intervals thereafter not to exceed 500 hours' time in service from the last inspection.
Inspect the aileron trim tab motor support bracket (P/N S-20-030-5050) attached to the aft face of the 70 percent rear spar at wing Station 178.36 for cracks. Defective parts should be replaced.
Upon request of the operator, an FAA maintenance inspector, subject to prior approval of the Chief, Engineering and Manufacturing Branch, FAA Southern Region, may adjust the repetitive inspection intervals specified in this AD to permit compliance at an established inspection period of the operator if the request contains substantiating data to justify the increase.
Revised December 28, 1964.