47-49-07 LOCKHEED: (Was Mandatory Note 40 of AD-763-3.) Applies to All Model 49 Serials Up to and Including 2088, Unless Equipped With MLG Drag Strut Dampers.
Compliance required prior to February 1, 1948.
(a) Replace the NAS 58A65 bolt used to connect the two halves of each MLG upper drag link assembly, LAC P/N 283418 and 288983, with a 5/8-inch diameter high strength bolt, LAC P/N 297902.
(LAC Service Bulletin 49/SB-368 covers installation of MLG shock strut dampers.)
(b) Reduce MLG shock strut inflation pressures to provide a static extension of 2 inches at maximum landing weight.