The XJ-7 Jet which Kelly Wood flies is actually a TT-1 Pinto trainer made for US Navy by Temco Aircraft in 1950's. They retired them from service in 1960. It appears along with other vintage aircraft including a Mitsubishi A-6M Zero. A Japanese plane used till 1945 in WWII.
GX-1 (1987) is an obvious remake of this episode. (1) Both episodes involve a missing experimental jet fighter aircraft. (2) Both prototype planes have somewhat similar names (XJ-7/GX-1). (3) Veteran actor Dana Elcar appears in both episodes (he is a regular cast member in MacGyver).
The XJ-1 (TT-1Pinto) used here was sold and exported to Philippines months after show aired. It was removed from FAA registry then. Tail number would be reassigned many years later to a Piper aircraft.
Farrah Fawcett's fourth and final guest appearance on the series. This also marks the only time Fawcett reprised one of her previous characters (Major Kelly Wood).