Did You See the Sun Rise? - S3-E1
Revealing mistake: Going through the database with Lieutenant Maggie Poole, Magnum spots finally Ivan's picture. This involuntary puts a rather hilarious twist to one of the most famous and dramatic endings of a TV episode, since that picture from the military intelligence database is exactly from the 'future', aka the ending of the episode; Ivan is wearing the same black suit and tie (pretty weird already with the setting) that he will wear in the ending, and is even in front of the same tree leaf by leaf. (01:13:30 - 01:34:20)
Revealing mistake: In present day, Magnum is flying with TC to the old house. Selleck and Roger Mosley are talking inside the vehicle about being there before, and TC's shirt is dark red. However in the wide shot of the landing, whoever is piloting the chopper is wearing a yellow shirt. (00:43:40)
Revealing mistake: In the flashback of the massacre in Africa experienced by the man in the opening when he stares at the moon, one of the extras is supposed to fall struck down by a rifle shot, but she is blatantly using the arms to soften the fall, and then tries to adjust flat on the ground, making it all look like she just decided to start doing push-ups on the spot. (00:03:15)
Past Tense - S3-E4
Revealing mistake: In the sequence when the three baddies are pushed down the slope, stunt doubles are used, with the black haired guy's being especially obvious. The stunt person is noticeably younger and leaner and with longer hair. (00:23:50)
Did You See the Sun Rise? - S3-E1
Revealing mistake: The actress playing Julie Barbara has short dark hair as is abundantly clear during the lengthy scenes involving her. But for the shot of the explosion, the stuntperson wears a long blonde wig. (00:41:40)
Past Tense - S3-E4
Revealing mistake: As the helicopter takes off with the prisoner, guards shoot it repeatedly. In particular in a close-up they shoot off two grills on the engine combustion fuel drain. Looking at the close-up, you can see the wires used to detonate the charges, and bits of the black paper/gaffer tape that kept the explosion rigging together, flapping now in the wind. (00:07:55)
Did You See the Sun Rise? - S3-E1
Revealing mistake: Mac suggest to drive Magnum and Julie to watch the sun rise at the Pali lookout. When Magnum collapses, his watch is at 10 minutes to 2. In April (Queen's birthday), the sun rises in Hawaii around 6, surely Mac did not plan to drive them around for 4 hours. (00:42:00)
Did You See the Sun Rise? - S3-E1
Revealing mistake: MacReynolds is summoned by his superior officer on the observation site. The officer holds his binoculars perfectly still and mostly horizontal, but in the POV shots the visual keeps shifting higher and higher following the missile's trajectory. (00:12:00)
Did You See the Sun Rise? - S3-E1
Revealing mistake: TC's arrival is announced by the loud sound of his helicopter, which makes Higgins' desk comically shake. Fun sight gag, but looks totally phony, since everything in the room, including the plants, is completely still. (00:09:00)
Past Tense - S3-E4
Revealing mistake: TC kicks the boss villain in the face as he tries to climb back the hill; the kick misses by a mile. (00:24:00)
Revealing mistake: When Agatha and the other "ladies of the Sandwich Island Botanical Society" show up near the chopper, aside from TC's perfect reaction toward Higgie Baby, in this shot (and a following shot) the wood box and wedges are visible under the chopper, as they are there to be the stable step up for Agatha, when she enters the chopper from the other side. (00:45:00)
Revealing mistake: As everyone marches towards the happy ending of the episode, the Higgins lookalike that walks by Magnum at the airport looks in fact nothing like Higgins. (00:41:50)
Two Birds of a Feather - S3-E19
Revealing mistake: The plane is supposed to be completely out of fuel and simply gliding when it passes over Magnum's head, but you can see its propeller is spinning. (00:09:15)