78-11-09 SHORT BROTHERS LIMITED: Amendment 39-3217. Applies to Model SD3-30 airplanes, S/Ns 3003 through 3010, certificated in all categories.
Compliance required prior to accumulating 5000 landings or within 100 landings after the effective date of this AD, whichever occurs later, unless already accomplished.
To prevent failure of the main landing gear swivel assembly, remove the swivel sub- assembly, P/N 17684-1, -3, -7, -9, or -9A, the flange collar, P/N SD3-40-0023, and associated fasteners and replace with a swivel sub-assembly, P/N 17684-13, flanged collar, P/N SD3-40- 0040xB, and new fasteners all in accordance with paragraph 2, "Accomplishment Instructions", of Short Brothers Limited Mandatory Service Bulletin SD3-32-03, Revision 3, dated March 3, 1978, or an FAA-approved equivalent, and paragraph 10, "Accomplishment Instructions" of Menasco Manufacturing Service Bulletin 32-8, Revision 1, dated January 24, 1978, or an FAA- approved equivalent.
This amendmentbecomes effective June 6, 1978.