Continuity mistake: Danno, posing as a photographer on the beach, snaps the shutter at a bikini-clad girl and quips, "I only wish I had some film." Seconds later, he takes a picture of the suspects that's then used to identify them. The scene is continuous, and at no time did he ever load film into the empty camera, nor did he have another one. (00:34:30)
Continuity mistake: As Kono talks to Johnny Kalama in the students' apartment, an orange lava lamp sits on the shelf between them. Each time the camera angle reverses, the wax bubbles in the lamp are very noticeably in different positions and configurations. (00:41:00)
Factual error: During the shoot-out at the end, McGarrett's 6-chamber .38 caliber police special fires 8 rounds without being reloaded.
All the King's Horses - S2-E10
Audio problem: When McGarrett and Danno pull away from the curb in McGarrett's big black Mercury, the tire-squealing sound effect begins before the car actually starts to move. (Doesn't happen unless you're flooring it and "peeling out," which they're not.) (00:41:50)
Continuity mistake: Although the plane making an emergency landing is repeatedly referred to as a jet, the aircraft we see in the air (and later landing) is a prop job. (00:03:00)
Bored, She Hung Herself - S2-E16
Factual error: Don, who professes to be a Buddhist, chants in the jail cell and refers to Buddha as "god." Adherents to this religion do not worship the Buddha and never refer to him as god. Later on, Don chants to Krishna, a Hindu deity not even remotely connected with Buddhism. So, just what is Don - a Buddhist or a Krishna? (00:12:30)
Factual error: Tommy races past the outside of two of Five-O's office windows before climbing in through a third. Unless he can fly, this is impossible: McGarrett's office is on the second floor, and its windows have balconies that are not connected to each other. (00:10:15)
Continuity mistake: Danno drives to Brohme's house in a black 1966 Ford Galaxy 500, but arrives in a green 1969 Ford LTD. (00:41:05)
Continuity mistake: Recycled footage is again a bit too obvious here, when McGarrett's 4-door Mercury suddenly becomes the 2-door model he drove in the pilot film. It also causes him to arrive, exit the car and walk into the building wearing a grey suit, but enter the Federal agent's office in the next shot wearing a blue suit. (00:25:00)
Continuity mistake: At the end, Krenter is shot during the final gun battle on the beach. Between takes, his body and the deflated rubber raft that was also on the sand both disappear. (00:48:00)
Three Dead Cows at Makapuu (1) - S2-E23
Visible crew/equipment: When the morgue lab techs come out into the hall to report to McGarrett, the closing glass door captures a brief reflection of the moving camera. (00:09:05)
Three Dead Cows at Makapuu (1) - S2-E23
Audio problem: The landing jumbo jet's tires start making skidding noises before they've actually touched the ground. (00:13:45)
Three Dead Cows at Makapuu (2) - S2-E24
Continuity mistake: When the surfer examines the test tube in his beach shack, the level of white powder inside the tube keeps changing between shots. It's nearly full, then has only an inch inside, then is full again, etc. (01:22:00)
Kiss the Queen Goodbye - S2-E25
Audio problem: At the Governor's pageant, a group of young children sings and dances to ukulele music. But the song is just a little too noticeably dubbed in: none of the kids' lips are moving. (00:30:10)
Factual error: Kono gives the operator a six digit number for the public phone. By 1970, when this episode was shot, Hawaii had long since initiated seven digit phone numbers, as had most of the US more than a decade earlier. (00:30:30)
Plot hole: McGarrett is hunting for heroin dealers who've laced the drug with arsenic. Yet when he and Chin Ho arrest Harry Parch and find his stash, McGarrett performs the TV cop cliché of sticking his finger into the white powder and tasting it. Even that small a dose of arsenic could be lethal, and seasoned cop that he is, McGarrett would know that. (00:29:30)
Visible crew/equipment: Several times in this episode, the side of McGarrett's shiny black Mercury sedan mirrors an entire bank of big square studio light reflectors. (00:35:00)
Audio problem: Probably due to poor sound pick-up outdoors so near the ocean, much of the dialogue on the beach house patio is noticeably overdubbed. The sound is often out of sync with the actors' lips. (00:39:00)
The Ransom - S3-E6
Revealing mistake: McGarrett paces in his office, and when the shot cuts to a close-up of his feet, the actor's blocking mark is visible, chalked on the carpet.
Visible crew/equipment: The shadow of the boom mike's pole rigging follows McGarrett as he passes the ambulance and coroner's wagon. It disappears when the shot cuts to a different angle. (00:37:30)
Answer: He was fired. He never really appreciated his character. He felt Kono was portrayed as a big dumb Hawaiian and that the stereotype was racist. He also felt underutilized. He was fired after a heated argument with the show's publicist regarding his character. It seems there's not much details given regarding the incident or the firing, so it's seems possible he upset the show's producers as well.
Bishop73
No he said something derogatory about one of the Jewish producers that's why he was fired.