47-10-38 LOCKHEED: (Was Service Note 9 of AD-763-3.) Applies to All Model 49 Serials Up to and Including 2059.
At periods not to exceed 500 hours, inspect the shank end of each main landing gear drag link crosshead assembly for signs of cracks in the fillet region. If cracks are found, install new type crosshead assembly, LAC P/N 288982, and, if necessary, replace the 283418 drag links with 288983 drag links. The periodic inspection procedure may be discontinued when the new type crosshead assembly is installed.
(LAC Service Instruction 49/SI-27 covers this same subject.)