Deliberate mistake: When Magnum first meets Geoffrey's wife, Penelope, the shot facing Magnum as he asks her if something is wrong, is the start of a series of flipped shots facing each of them during this scene. (00:11:30)
Deliberate mistake: While Magnum is with Penelope at the cemetery Magnum spots a man standing by the tree, and when Magnum walks over to stand beside Penelope, this shot is flipped. (00:32:55)
Deliberate mistake: When the Simon brothers are parked across the street from the entrance to Robin's Nest, with Harold Sands in the back seat, Rick uses binoculars to have a closer look at the estate. In the POV shot from within the binoculars, the estate's entrance gate with a sign on the bricks is backwards, revealing it as a flipped shot. (00:12:40)
Did You See the Sun Rise? - S3-E1
Deliberate mistake: When Greene, Magnum and Rick are flying in the chopper going after TC, their first few closeups are all flipped, note their seated positions, backwards shirt buttons, cap lettering, etc. In later closeups their seating positions are in the proper place. (00:35:05)
Did You See the Sun Rise? - S3-E1
Deliberate mistake: When TC is flying the stolen Loach toward the Japanese delegation, there are multiple exterior flipped shots showing the stolen helicopter backwards. There are also flipped closeups of TC while flying, note position of his helmet mic, etc. (00:34:35)
Deliberate mistake: Magnum spots the fateful brunette on the yacht. During this scene, a couple times he sees her with the exact angle of the camera zoom when he just pulled away from it. (00:11:00)
Deliberate mistake: In the scene that sets up the climax involving the car, both the trunk and the gas cap are unlocked to make the filming smooth. (00:38:50)
Deliberate mistake: During the episode, whenever daily newspapers are shown, they lack any indication of the date.