47-10-25 LOCKHEED: (Was Mandatory Note 28 of AD-763-3.) Applies to All Model 49 Serials Incorporating Eclipse Type 1193, Model 1, Style A Generators on Which the Serial Numbers Are Not Followed by the Letter "M".
Compliance required prior to March 1, 1947.
Replace the 12 mounting head-to-yoke bolts in each generator with new 1/4-inch bolts (P/N 63937 referred to in Eclipse-Pioneer Bulletin No. 70).
(LAC Service Bulletin 49/SB-64 covers this same subject.)