Hartmut wrote: > Roy, I always belived the stainless steel had to be
> added also for the gross weight increase STC. Linda is right. The gross weight STC just modifies the allowed gross weight of the 415-C and 415-CD by making all the functional changes the D needed for higher gross weight. With the STC, there's no change in model and no change in the certification under which the plane is being flown. The stainless steel panel was not functional for the gross weight - its addition was regulatory to correct an error in the original C certification. When changing the model of the aircraft up to D, you are moving the aircraft to a new certification document and the stainless steel panel is required under that certification document (A-787). Ed
