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I have finally worked out what the mysterious "Sikorsky SZ 338B" was ! Since the former Schweizer SA 2-38B Shadowhawk (RU-38B Twin Condor), became the Sikorsky SA-38B, I had a hunch, that the former SA 3-38B could be it... and after looking specifically for that particular model, it turned out that I was right: Kevin Hritz, Senior Principal Electrical Engineer at Sierra Nevada, who worked from 2006 to 2012 for Sikorsky Aircraft as Senior Electrical/Avionics/Systems Engineer, posted a photo of [N382SB] on his profile (the only one I've ever seen), and designated it as the "Sikorsky (Schweizer) SA 3-38B MCSA ISR Aircraft, powered by PT6A-34 engines."[ATTACH=full]756189[/ATTACH]Source: https://www.linkedin.com/posts/kevin-hritz-308773b_sikorsky-schweizer-sa-3-38b-mcsa-isr-aircraft-activity-6389631563683889152-N8Tl/More about the SA-338B:Source: https://www.airframer.com/news_story.html?release=9750It would appear (notably from the various comments on the LinkedIn page I mentioned further up) that assembly started in 2010 and that 150 hours or PT6A ground tests were performed, but that the project was abandoned before the aircraft could fly. Also it is more than likely that the second airframe was never completed and that the registration reserved [N385SB] was never actually used.
I have finally worked out what the mysterious "Sikorsky SZ 338B" was ! Since the former Schweizer SA 2-38B Shadowhawk (RU-38B Twin Condor), became the Sikorsky SA-38B, I had a hunch, that the former SA 3-38B could be it... and after looking specifically for that particular model, it turned out that I was right: Kevin Hritz, Senior Principal Electrical Engineer at Sierra Nevada, who worked from 2006 to 2012 for Sikorsky Aircraft as Senior Electrical/Avionics/Systems Engineer, posted a photo of [N382SB] on his profile (the only one I've ever seen), and designated it as the "Sikorsky (Schweizer) SA 3-38B MCSA ISR Aircraft, powered by PT6A-34 engines."
[ATTACH=full]756189[/ATTACH]
Source: https://www.linkedin.com/posts/kevin-hritz-308773b_sikorsky-schweizer-sa-3-38b-mcsa-isr-aircraft-activity-6389631563683889152-N8Tl/
More about the SA-338B:
Source: https://www.airframer.com/news_story.html?release=9750
It would appear (notably from the various comments on the LinkedIn page I mentioned further up) that assembly started in 2010 and that 150 hours or PT6A ground tests were performed, but that the project was abandoned before the aircraft could fly. Also it is more than likely that the second airframe was never completed and that the registration reserved [N385SB] was never actually used.