On 30-Mar-2006, The Visitor wrote:

Pre 83, I hope so. I read the bulletin and it mentions Seneca 4's and
5's. So why limit it to pre 83?


The SB lists possibly affected SNs for each model, rather than model year.
However, the affected ribs carry a date code of 8312 (12th week of 1982) or
lower. Of course, airplanes built for some time after that date might have
used older ribs in initial construction. And it's even POSSIBLE that a
newer airplane has had an older (salvage?) rib installed to repair damage.
But my guess is that the vast majority of pre-1983 Piper retracts are
affected, and the vast majority of post-1983 planes are not.

-Elliott Drucker