58-04-03 PIPER: Applies to Model PA-23 Aircraft, Serial Numbers 23-1 to 2-1253 Inclusive.
Compliance required at next 100-hour inspection but not later than April 1, 1958, whichever occurs first.
As a result of a number of failures, the hollow rudder trim tab adjustment screw, P/N 18453-00, must be replaced with a solid screw, P/N 18453-02.
(Piper Service Bulletin No. 162 covers this same subject.)