49-13-02 BELLANCA: Applies to Models 14-13, 14-13-2 and 14-13-3 Aircraft As Indicated by Serial Numbers Below.
Compliance required by July 1, 1949.
1. (Applies to Serial Numbers 1060 through 1567, and 1570 through 1573.) In order to strengthen the fitting on the rear wing spar to which the landing gear drag strut attaches, Bellanca P/N 7560, a 0.065 x 1 1/4 x 1 3/8 4130 steel plate should be welded in place at the forward intersection of the two channel sections.
(Bellanca Service Bulletin No. 18 covers this same subject.)
2. (Applies to all Serial Numbers prior to 1589.) In order to prevent overstressing the landing gear drag strut, a suitable stop should be provided at the lower end of the landing gear retracting screw. The stop should be so installed and adjusted as to limit the drag strut travel to that necessary to fully extend the gear.
(Bellanca Service Bulletin No. 24 covers this same subject.)