46-31-01 STINSON: (Was Mandatory Note 1 of AD-764-1.) Applies to Model L-5B, - 5C, -5E, -5E-1, -5G Aircraft.
Compliance required at time of civil certification or, if already certificated, prior to next periodic inspection.
The hinged back of the rear seat must be permanently fastened to preclude the possibility of interference with the rear control stick.