Revealing mistake: At the studio, in the overhead shot just as the squad is about to reach the building where Johnny will be testing Wally's equipment, the 'Black Tower', which houses Universal's executive offices, is visible in the background, and then in the roof shots when each of the guys repels down individually, the Sheraton-Universal is visible in the background.
Other mistake: Over the phone the bookie tells Sidney, "I'm having them pains again. I don't feel so good. Would you call some...," then collapses onto the floor. Then Station 51 is dispatched to "Possible heart attack," and the address is given, along with the apartment number 23. After 51 breaks into the bookie's apartment, soon one of the phones ring and Captain Stanley says, "Let me get this straight. Your name's Sidney, and you phoned in the heart attack, right? Now we're getting somewhere. How come you didn't have the address? What's your last name Sidney?" However, 51 was dispatched to the proper address and even the apartment number. Nobody else knew of the heart attack, and the victim did not phone it in.
Loose Ends - S6-E12
Other mistake: While Brackett is a patient at Rampart, he phones to inquire about Tina, and when he rips off his hospital ID bracelet we can see the wood grain bathroom door as he heads for Tina's room. When he's in Tina's room, the wood grain bathroom door in her room is identical to the door in Brackett's room, revealing the same room is used for both patients.
Visible crew/equipment: When Station 51 is being dispatched to 'man down' at the hotel, in the overhead shot of the apparatus bay as the guys are getting into the rigs, the reflection of moving production equipment can be seen on Engine 51's windshield.
Other mistake: When the woman from the car accident is in the ER, Morton uses the laryngoscope to intubate her, and hooks her up to the respirator, but then she goes into V-fib, and when the defibrillation and epinephrin are unsuccessful and she flatlines, even if the respirator hose came loose she would still have the intubation tube in her mouth, but she doesn't.
Continuity mistake: During 51's basketball game against 16's, the sweat stains on the guys' clothing keep changing between shots.
Paper Work - S6-E11
Other mistake: After 51 rescues the boy who was stuck in the storm drain and is brought to the ER, Brackett uses the laryngoscope for endotracheal intubation, but the problem is we can see when Brackett cups his left hand, he merely places the distal end of the laryngoscope over the top of his hand, not actually down into the boy's mouth.
Paper Work - S6-E11
Other mistake: When the foreman and secretary are rescued at the warehouse fire, two shots after we see the foreman climbing down the ladder, there's a shot of the grey steel drums marked 'acetone' with two lying on their sides on a wood pallet, while the guys hose down the fire. What's funny is that in the next shot there's a disposable plastic cup that has suddenly appeared on that pallet. Obviously while shooting the different takes one of the actors or crew members left their cup on the pallet before they resumed filming.
Visible crew/equipment: After rescuing the injured worker from the top of the sky-tower at Oceanland Park, when Mike has a problem starting 51's engine, we see reflections of array lighting on the squad's surface. And when Captain Stanley moans that he'll have to call Charlie, he stands in front of the engine and calls out, "Why me?" and one of the location's array lighting units is visible at the left side.
An Ounce of Prevention - S6-E13
Continuity mistake: When Roy and Johnny are rehearsing in front of Captain Stanley and the other guys, after Johnny uses the bug spray on the flame, in the wide shots Roy's hands are in his pockets and the hairspray can is on the table, but in the closeups Roy's still holding the hairspray can.
Other mistake: When Station 51 is dispatched to the "freeway accident," as the engine and squad roll out of the apparatus bay, we can see the real 127's vehicle still parked in the bay, near the rear door.
Visible crew/equipment: When Station 51 is on scene at the freeway accident, after the two girls are rescued from the wreck, when the explosion occurs Roy and John dive to the ground, and as the camera zooms out we can see the top of the location's array lighting unit, just past the engine's hose bed at the bottom left corner.
Visible crew/equipment: During the rescue at the jail, while Roy is hanging on the line, the outline of the mic transmitter is visible on his shirt at his left side.
Revealing mistake: During the rescue at the jail, while Roy tries to get a safety belt around the prisoner's waist, the man freaks out, then grabs Roy and they both swing out on Roy's safety line. When the camera pans a bit too far to the left, we can see the edge of the fake "sky" screen on the left, behind the building's replica set used for closeups.
Fair Fight - S6-E5
Visible crew/equipment: When Johnny and Roy get back to the station and walk into the day room, right after Marco says, "Well, either he's sick, or he's the laziest dog ever lived," we can see the shadow of the boom mic moving back and forth across the top of the wall, on the right.
Visible crew/equipment: After Station 51 is dispatched to the fire at a singles club, when Engine 51 pulls into the parking lot it and then turns around, the reflections of multiple array lighting can be seen on the engine's surface and Mike's window when he opens the door.
Other mistake: When the self defense instructor tries to use Mrs. Pestone to demonstrate the flip, he puts his arm around her and covers her mouth, then it cuts to a shot of Squad 51 rushing down a street. This particular shot is from 5x8, "The Lighter-Than-Air Man," when Roy drives past the school kids and crossing guard.
Other mistake: During the singles club fire, after Johnny and Roy check the men's room upstairs, there's a shot of firemen in full turnout gear with hoses, and this footage is from the first season's pilot episode, "The Wedsworth-Townsend Act."
Other mistake: During the actual cliff rescue of the hang gliding accident victims, Roy and John are wearing hiking-type shoes with ridges on the soles, not their uniform shoes.
Pressure 165 - S5-E7
Visible crew/equipment: When Roy and Johnny are with Chef Michel, the outline of the mic transmitter can be seen on the front of Johnny's shirt.
Answer: On IMDB, actress Anne Schedeen is listed as playing Nurse Carol on six episodes from 1974-76.
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