0-200 in 415C

From Alpha Aviation

For owners of 415C and CD aircraft; the revised STC stipulates that STC SA02450CH “Gross Weight Increase to 1320 lbs.” be applied to insure the airframe meets the structural standards of Type Certificate Part 4a, A-718, Note 3; with the exception of the requirement to install a replacement stainless steel skin on the top of the boot cowl, which is not required per STC SA02450CH. The Gross Weight Increase is available for purchase above if you have not already installed it (Choose "Previously Purchased"). Please Note: If choosing "previously purchased" we will be confirming the Tail# or Serial # against our records to ensure conformity with this stipulation.

Alpha Aviation now has the O200A swap STC and will be available on their website soon for the 415-C and CD and keeps the 1320 if you have the STC.

Then it was done on a field approval not STC. The STC may have been referenced but the approval bases had to be a field approval. It would also have required changing the elevator travel and updating the mainlanding gear orifice. With the field approval the aircraft would remain a C model. No such thing as a c/d model, either a C, CD, D, E or G model.

My 415C has an 0-200A and was kept as a LSA with the D model STC conversion and Alpha STC to take to 1320# under a Field Approval that was approved by Atlanta ACO - in essence just a "paperwork" restriction keeping weight at 1260 and then Alpha raising weight to 1320#. Never had been converted to D model.

Last I talked with Alpha ( Don McDonald, great guy willing to "work with/for" us Coupers) is waiting on Chicago ACO to approve his STC as mentioned below - they're "dragging their feet" even though he has supplied adequate data.

The STC only covers the D at this time. If it is still light sport is had to be field approved. Alpha is working on the STC to include the C and CD though.

My 415-c has the o-200 in it... its became a c/d and is still light sport