The MD500 Airwolf was shooting at had the newer "T-tail" but the burning wreckage after it was hit had the older "V-tail".
Dominic is using VOR to navigate, but the close up of the instrument/screen being used is that of an oscilloscope used for audio and television servicing and not an aircraft navigation instrument.
During the end where Airwolf is fighting off the Russian MIG fighters, a brief glimpse of the side of one of them shows USAF markings.
When Stella is calling Red Star on the radio to arrange for the new exchange she never pushes the transmit button on the Turner Sidekick Microphone making it impossible to transmit a message.