Continuity mistake: In many of the interior shots of the paramedic cab, as it heads to the destinations, there is a rear view mirror on the windshield. In all the exterior shots there is no rear view mirror.
Continuity mistake: Responding to the elevator call, in the overhead shot Squad 51 pulls up adjacent to the street awning when Gage and DeSoto get out, but in the next ground shot the squad is 20-25 feet farther down.
Visible crew/equipment: When Squad 51 is dispatched to 'person caught in a mailbox', have a look at the squad's license plates when it rolls up on scene. The plates read "70324H" which is the California commercial plate number for Squad 51, not the usual prop dept's license plate "E999007." It was the prop dept's responsibility to change from the commercial plate to the prop plate, but this scene slipped by them. It's also interesting to notice that this scene takes place at a real intersection up the block from Universal Studios, which is the direction Squad 51 came from. Note the "Black Tower/MCA Tower" in the background, which houses Universal's executive offices.
Peace Pipe - S2-E5
Continuity mistake: When Kelly and Gage have at it about the portrayal of Native Americans in film, DeSoto quips, "What are you picking on me for?" as he faces Gage in front of him. Gage then walks to the other side of the table and after he says, "We call that white man royalty syndrome," he puts his arm around Kelly, standing beside him. We are then shown DeSoto's reaction shot, who still faces Gage in the same direction as his earlier quip, and we also see Kelly behind him, but no Gage.
Revealing mistake: When Engine 51 and/or Squad 51 are dispatched, the shots of the vehicles when they are first dispatched, while en route to the call or en route to Rampart, etc, in many instances, are stock footage or repeat shots which show the same traffic, same parked cars, same people, etc., from previous episodes.
Peace Pipe - S2-E5
Continuity mistake: Before being shot at, when Gage and DeSoto climb up to the scaffolding, Gage lifts the man's head to rest on the scaffolding and stays that way in each of the following close-ups, but in the following four wideshots his head still hangs over the side.
Revealing mistake: En route to the pick-up truck hanging from the freeway on-ramp, there is a flipped shot of Engine 51 and Squad 51 as they drive under the freeway before the camera pans in towards the car. Some giveaways are the reversed '51' on Engine 51 and the reversed 'road construction ahead' sign.
Greatest Rescues of Emergency - S7-E5
Other mistake: As the men are receiving their new badges and the chief congratulates them, he calls Craig Brice. The Brice that accepts the new rank is a black man. In all previous episodes, Brice is white.
Family Ties - S6-E16
Other mistake: Dr. Morton notifies the operator of the Code Red in room 127. Everybody knows room 127 is Dr. Brackett's office.
What's a Nice Girl Like You Doing...? - S7-E7
Visible crew/equipment: After the last rescue it cuts to Roy as he says, "We'll catch you all a little later," and when Roy walks away we can see the actor's T-mark on the floor, where he was just standing.
Other mistake: After getting the hermit out of the cave, Roy asks Marco to take the EKG leads "over there", but then hands them to Chet (played by Tim Donnelly) saying "here Tim", and the subtitles read that Roy says "Chet."
Other mistake: After Hector agrees to use Tractor 2 to cut a trail down to teenagers in the crashed car, Captain Stanley tells Roy and John to get their gear, then says, "Marco, Chet, give them a hand," but DVD subtitles read, "Mark it off, Chet..." Later when they're carrying the teens up, we hear the dispatcher say, "Squad 36, 10-7 to Rampart," but subtitles read "Squad 36, transport to Rampart," and when the dispatcher says, "Repair 2, Engine 163 is requesting tow truck," but subtitles read "Return 2..."
Other mistake: During the paint factory fire incident, when the Battalion Chief (Battalion 14) contacts LA dispatch over the HT he says, "LA, Battalion 14, this fire is contained," but the bizarre subtitles read "Calling Battalion 14..." Subtitles from Universal Studios 2010 DVD.
Continuity mistake: When the guy (Michael Conrad) with the gunshot wound is being wheeled out of the treatment room there is nothing on his face, but in the shot from the hallway as they exit the room suddenly he has a tube inserted into his nostril with tape holding it in place.
Other mistake: At the fire, while they're searching for the missing boy, Marco feels the partition for heat and shouts to Captain Stanley, "Hey, Cap! Cap!" but the subtitles read, "Hey, Chet! Chet!" Then after the boy's rescue, we hear the Battalion Chief say, "LA, this fire's contained. All copy. Out 1 hour," but subtitles read "Talk 1 hour." Subtitles from Universal Studios 2010 DVD.
Other mistake: At the start of this episode Squad 51 heads out to the construction site with the screaming woman, and Roy and John are in their full turnout gear, which means they've just spent the night at the station and it's early morning at the end of their 24-hr shift, yet back at the station Roy and John are getting into their uniform at the start of their shift, which is 8:00AM. Joanne Worley's screaming segment was filmed for an earlier episode, but was inserted into this episode.
Continuity mistake: At the nurses' station, after Roy tells Brice that Brightweiser will be okay the two of them walk to receiving carrying their gear, with Roy holding the Biophone and defibrillator, but as they head through the doors both the Biophone and defibrillator have each turned around in Roy's hands, and now face the opposite way.
Continuity mistake: After Roy shows Brice the drug box, Roy places it back into the squad's side bay in the closeup, but in the wide shot Roy's still holding the drug box while Brice acts like his annoying self.
Continuity mistake: When Roy, John, and Marco walk into the rec room while Chet is trying to wax the floor, Marco is wearing a ring on his left hand in the wide shots, but in the closeups with Captain Stanley the ring is gone.
Other mistake: When the cardiac arrest is first brought into the ER we hear "Let's get him intubated," but the weird subtitles read, "Let's get him elevated." Subtitles from Universal Studios 2010 DVD.
Answer: I believe you are speaking of the old man, Mr. Wilson. He's played by J. Pat O'Malley.
Bishop73
Correct, it was J. Pat O'Malley...he also played the grandfather with his grandson when their rocket exploded, and also played "Old Bill" in the episode with Ann Prentiss, where Gage saves the little girl from the burning tree house, and her mother falls in love with him.