I have a couple of images of the 690D s/n 15001, N5779N, which has obviously run off the side of a runway. I haven't traced an accident for it, but understand the insurance claim was handled by Airclaims Ltd.., through their office in California.
N5779N was retained by Gulfstream as a demonstrator between February and October 1982, then being sold via Byerly Commander Sales to three guys in Kalispell, Montana, who leased it to Beth Aviation Inc., in La Salle, Illinois. It was actually operated by J J Grundy Inc., Oglesby, Illinois. In February 1983, it was Re-Registered as N82BA.
So, there's just a year's window for the accident to have occurred. Does anyone recall a date and location ?