58-06-02 HARTZELL: Applies to All HC-82XF/8833-0 (86 to 88 inch-diameter) Propellers, Hub Serial Numbers Between T-913 and T-2891 Except T-2564, T-2569, T-2594, T- 2595, T-2609, T-2648, T-2703 and T-2716.
Compliance required prior to next flight.
Two recent failures of A-159 split rings have occurred in HC-82XF/8833 propellers. In order to minimize the possibility of the occurrence of this type of serious failure, replace the present split rings with new split rings. The present rings are unmarked, but the new A-159 rings will be marked with the letter "N".
(Hartzell Service Bulletin No. 57 covers this same subject.)