Hartmut, The gross weight increase STC does not require the stainless steel. I have that STC for my 415-C, and it is not on the list of what was required.
Linda
5c. Re: Model C or D
Posted by: "Hartmut Beil" [email protected] hbeil
Date: Thu Jul 23, 2009 2:04 pm ((PDT))
Roy, I always belived the stainless steel had to be added also for
the gross weight increase STC.
