67-08-03 FAIRCHILD-HILLER: Amdt. 39-361 Part 39 Federal Register March 4, 1967. Applies to Models UH-12D and UH-12E Helicopters.
Compliance required as indicated.
To prevent failure of the attachment of cyclic control bracket P/N 3301-5 to the transmission housing P/N 23542, accomplish the following:
(a) Within the next 10 hours' time in service after the effective date of this AD, unless already accomplished, inspect the cyclic control bracket attachment bolts for a torque of less than 50 inch-pounds and visually inspect the Rosan inserts in the transmission housing for cracks or any other damage. Replace damaged inserts and inserts where a bolt torque of less than 50 inch-pounds is encountered prior to further flight in accordance with Fairchild-Hiller Service Information Letter No. 3054 of November 4, 1966, or later revision approved by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region.
(b) Within the next 100 hours' time in service afterthe effective date of this AD, unless already accomplished, remove the Rosan R206SB-8 inserts and install Roson RD206SB-8 inserts in their place and install MS20073-04-10 bolts in accordance with Fairchild-Hiller Service Information Letter No. 3054 of November 4, 1966, or later revisions approved by the Chief, Engineering and Manufacturing Branch, FAA, Eastern Region.
This directive effective March 9, 1967.