Sun Jet started up in 1993 if I have my dates right with two MD
-81s, bringing on the DC-9s a bit later on. They were responsible for one of the shortest lived carriers post de-regulation, Jet US, who flew I believe for one week (if that) on a DTW
scheduled route. N817SJ was the plane on lease to them. Reason they failed was that the plane had a mechanical issue when it got to EWR
that grounded it and they did not have their spare, N818SJ, up and running yet.
I flew Sun Jet many a time between EWR
during the days where I lived and worked in NJ
and my girlfriend at the time was in DFW
. Got my first ever flight deck ride on N817SJ in fact...will never forget that, cant say the same about the girlfriend.