When Airwolf shoots down the P51 plane, the exploding wreckage is that of an MD500 helicopter.
Between shots of the P-51 Mustang, the Mustang has mounts for rockets and then has no mounts.
When the P51 is chasing the Lear jet, the windows on the fuselage of the jet switch back and forth between 1 and 2 per side.
When Marella experiences engine difficulty the camera focuses on the instruments showing an RCA DME which has nothing to do with engine status. A DME (or distance measuring equipment) is a navigation aid.
A P-51 has .50 caliber machine guns in the wings; it would not be able to fit 50mm cannons in the wings as Mr. Mason says.
Around the 42min mark when Airwolf battles the North American P-51 Mustang it starts off as a Red & White aircraft with the Registration N64CL on the side, during the battle the P-51 battle footage is reused from a previous episode 'The American Dream' where 'Airwolf' battles a Silver P-51 Mustang over the farmers fields. You can clearly tell they are two different aircraft.
The P-51 is shown firing rockets from the intake cowling underneath the aircraft. Since this intake cowling is shorter than the propeller arc of the aircraft, if rockets were fired from it they would blow the propeller off.
Several shots of the blue Plymouth chasing Larry Mason's van are reversed. License number reads backwards.
One shot of Marell's Lear Jet is reversed. N464CL reads backwards.
Mr. Mason is reviewing footage of the Airwolf helicopter. In the episodes wherein this footage is from, the areas that the footage portrays do not have cameras which could have taken the film from an in-storyline perspective.