47-25-01 CULVER: (Was Mandatory Note 3 of AD-778-2.) Applies to Models V and V2 Aircraft Serial Number V-1 and Up.
Compliance required prior to August 15, 1947.
In order to correct the possibility of unequal fuel feed from the two tanks, with the attendant possibility of air lock, rework the fuel system to incorporate a sump tank (P/N 11202-1) in former location of feed "T" fitting and revised fuel feed and vent lines.
(Culver Service Bulletin No. 17 covers this same subject.)