Revealing mistake: While Avon is occupied in hand-to-hand combat with a native on the beach, someone who isn't supposed to be in the shot can be seen walking on the ridge in the background, waving his arms in the air. (00:13:35)
Continuity mistake: Avon refers to Tarrant hitting him "over the back of the head." But Tarrant didn't. He struck Avon from the front, on the forehead, and not from behind. (00:05:30 - 00:40:45)
Other mistake: Just after Tarrant and Dayna teleport down, the power cord to Tarrant's gun comes unplugged and is hanging loose behind him. (00:03:15)
Continuity mistake: The Liberator gun Avon uses to kill two of the three troopers on the flight deck disappears entirely between shots after he's hit by the third trooper's return fire. (00:33:50)
Factual error: Cally's bracelet falls off while she's being dragged to the platform by the troopers, but she somehow manages to teleport down to the planet with them anyway. And the lost bracelet later miraculously appears on her wrist in time to bring her back up again. (00:34:45)
Factual error: Liberator's medical treatments are certainly weird. Vila dresses Avon's wounded arm with padding that's put on over top of his clothing. (00:37:20)
Continuity mistake: As the ship falls into the black hole, Cally loses consciousness with her right hand beneath her head. A few shots later, her position reverses and she's lying with her left hand under her head. (00:10:40 - 00:11:35)
Revealing mistake: Liberator's auto-repair circuits have mysteriously stopped functioning. The molding on the top center flight deck console is hanging loose, a glitch that remains for several episodes. (00:23:50)
Factual error: Tarrant fails Astronomy 101 here, just as Travis did in the first season. He tells the clerk, "I'm surprised you've heard of it (the FSA), if you're from another galaxy." The Tharn and his minions were not extragalactic; they were from other planets in our galaxy. (00:35:10)
Audio problem: Just as Zen is reporting that it can find no stars for navigational reference points, something crashes very noisily off screen. No, it isn't the arriving Dayna's clunky shoes. Much too loud, unless she's throwing them at something.
Continuity mistake: When Jarvik and Dayna teleport up at the end, her bracelet disappears as they materialize in the teleport bay, but is back when they reach the flight deck a few seconds later. (00:44:30)
Factual error: Tarrant is some pilot. He miraculously gets the LEM into orbit without any rocket boosters or propulsion system of any kind - and with its landing gear still attached. (00:46:50)
City at the Edge of the World - S3-E6
Visible crew/equipment: When Bayban is introducing himself to Vila, an equipment shadow moves across the back of his studded leather jacket. (00:12:10)
City at the Edge of the World - S3-E6
Continuity mistake: The probe Vila uses to collapse the door's forcefield vanishes when the forcefield actually collapses. (00:24:05)
City at the Edge of the World - S3-E6
Continuity mistake: Dayna's outfit is skin-tight and she's not carrying any sort of backpack. So just where was she hiding that rather large robotic bomb she sends down the hall to blow up Bayban's goons? (The pack on her belt isn't a storage pouch - it's the Liberator handgun's power unit. Note that Avon, Tarrant and Cally wear identical packs, with the guns plugged into them. And it isn't large enough to hold the mobile bomb anyway, not even disassembled.) (00:35:10)
Other mistake: As the Auron pilot's ship is being brought aboard, a bad scratch on the special effects film briefly creates a large black gash on the hull of Servalan's whale-shaped spaceship. (00:03:05)
Visible crew/equipment: When Avon and Tarrant are consulting Orac about cloning, an equipment shadow crosses Avon's chest. (00:19:20)
Revealing mistake: When Liberator moves into view on Servalan's screen and stops, a bad special effects matte causes the stars behind the ship to keep on sliding to the right. (00:21:35)
Sarcophagus - S3-E9
Continuity mistake: The little plastic dome Tarrant places on the alien artifact, connecting it to Orac, disappears when the object begins to disintegrate. (00:24:25)