46-50-01 WACO: (Was Special Note 2 of AM-166.) Applies to Models INF, KNF, MNF, RNF Aircraft.
Inspection required before next flight - rework (if needed) not later than April 1, 1946.
Inspect the fuel line (or lines) connecting the fuel strainer and the carburetor to determine that this line is made up of either:
(a) Rigid metal tubing with flexible hose connections at each end, or
(b) Approved type flexible hose assembly.
Aircraft found to have fuel line installations not conforming to either (a) or (b) shall be altered to conform as soon as possible.
(Waco Service Bulletin No. 154 also covers this subject.)