47-21-16 REPUBLIC: (Was Mandatory Note 6 of AD-769-2.) Applies to Model RC-3 Aircraft Serial Numbers 5 to 250, Inclusive.
To be accomplished not later than the next 25 hours of operation subsequent to July 1, 1947, and in any case not later than September 1, 1947.
In order to provide a fuel strainer drain which is leakproof and airtight:
1. Remove the existing drain cock or plug from the fuel strainer located near the right hand wing fairing.
2. Install adapter 17P65058-1 in the strainer and install W7600-1/8 drain cock in the end of adapter. Use seal-lube when installing these parts.
(Seabee Service Bulletin No. 7 dated February 5, 1947, covers the same subject.)