Cessna 150 changes to Piper Cub and back again between shots.
When Nelson takes off his shoes before entering the Kings house, his socks are partially blue. In the next scene inside the house, his socks are completely black.
You cannot tell a computer user based on an IP address. You may be able to tell which computer used a specific IP address, but not which person used that computer.
Perry Darnley presents the Spitfire flying over the airfield during the air show as a Mk II, when actually it is a Mk IX. Most noticeable differences are the propeller (4 blades against 3 on the Mk II), exhaust pipes (6 on each side against 3 on the Mk II), the shape of the wings, the oil coolers beneath the wings and the armament (no machine cannons on the Mk II). Furthermore the nose of the Mk II was a little shorter.
It is unusual for the police to discuss someone who has been murdered until they have informed next of kin. Inspector Barnaby goes to the airfield and talks to the staff first, then goes to tell the victim's wife he has died.
Aircraft G-BOHM, described as being owned by Bernard King, is wearing an incorrect registration. Registration G-BOHM actually applies to a Piper L18C.
During the Report of the analysis of the rubber supposedly transferred to the head of the victim, Kate reports she found five percent steel. The only steel would be part of the inner carcass of the tire and could not possibly be transferred. In addition, it is doubtful anything would be transferred because skin is soft and also lacks roughness to abrade rubber from a tire.
Barnaby makes a comment about "blood splatter", yet the term used in forensic science is "blood spatter".