Most of Airport-Data's registration profiles are imported from FAA records database (OKC).

http://registry.faa.gov/aircraftinquiry/NNum_Results.aspx?NNumbertxt=12431

FAA USCAR lists mfg date as 1940.

There are many errors in the FAA database; some owner generated and some FAA record clerks (Fat fingers) generated.

You can submit a correction to A-D.com under the profile for N12431, and it will

usually be posted (after admin review) under comments section of profile.

John

Danny.

Further to John's response, it seems that only a small number of SV-4A's were manufactured prior to production ceasing in 1940 and was restarted in 1947.

I have the SV-4 and variants on my "to do" list just now.

There were several licenced manufacturers, Stampe & Renard, SNCAN, AIA, SAAMR, etc.

I think we will probably list them all as Stampe-Vertongen and possibly add a comment to profiles re licencing.

Malcolm.