When Hawke was kidnapped, he was not wearing his Firm uniform, yet when he leaves to attack the island, he is wearing it.
At the 5:45 point the pilot in command of the JetRanger just touching down on the heliport was not Jan Michael Vincent and had no sunglasses on. Moments later the camera moved away and came back to face the JetRanger and Jan Michael Vincent was in the pilot in command's seat with sunglasses.
When Mr. Hawke fires a rocket at a group of men, the cyclic control stick is left-handed. The Airwolf has right-handed cyclic control sticks.
About 42:00 camera crew and equipment is visible reflected on the limousine door.
When Dom and Cait arrive in Airwolf, the man guarding Hawke drives away and joins the other bad guys. Since Airwolf has advanced weapons, Dom could have attacked and killed all of the bad guys yet instead he surrendered Airwolf.