Audio problem: As Radar sets the clock back to 4:30, you hear ticking. The clock is electric, and wouldn't make a noise like that.
Suggested correction: Electric clocks do not necessarily lack a ticking sound. Depending on their construction, they may or may not have it. Older clocks are actually more likely to produce some sort of audible ticking sound, because the precise motor speed regulation required to build a clock with sweep seconds is much more difficult than producing an oscillator that outputs precisely one pulse every second (even if the clock in question does not have the actual second hand, that would still be true).
I bow to your observation and stand corrected. Thank you.
Continuity mistake: As Radar turns from Henry's desk, the tote board he has under his arm disappears as he approaches the file cabinet.
Continuity mistake: Casey's glasses go from dark framed to metal framed and back as he says goodbye to Hawkeye.
Love Story - S1-E14
Continuity mistake: When Trapper puts on the "Dear John" recording, the record is moving at two different speeds in the close up and wide shots.
Continuity mistake: As Potter says "knowing mademoiselles in the war, P.M." (pre Mildred) his hands are by his drink. As he finishes his line, they're crossed on the table.
April Fools - S8-E25
Continuity mistake: As Potter asks Hawkeye about stopping the jokes, his hand is up by Hawkeye's shoulder. After the angle changes, his hand is around waist height.
Baby, It's Cold Outside - S7-E9
Factual error: As Hawkeye performs CPR on the hypothermic soldier, he pumps his arms from his ellbows. CPR is done by keeping the arms stiff and pumping with the whole upper body. Hawkeye as a surgeon would know that. Fun Fact: You can perform CPR one-handed in a pinch, but only as long as you keep your arms stiff.
Suggested correction: True, but doing CPR the real way is going to likely seriously injure the actor it is being performed upon.
Explaining why mistakes occur does not invalidate them.
Chest compressions can definitely be performed by pumping from the elbow, one or two handed. The first documented use was in 1891, so Hawkeye would be aware of it. However, modern CPR standards, including straight arm procedures, were not developed until at least 1960 by the American Heart Association. Using straight arms and bending at the hips uses the larger muscle groups of the core and legs, which provides more control, as well as stamina. This is not an error for the Korean War era.
Additionally, what Lorg said - you don't want to hurt the actor, you can see his shoulders rise as his arms straighten, giving the illusion of compressions. There is another episode where Hawkeye is performing chest compressions similarly, and yells at the unconscious patient that his arms are getting tired, which is what would happen with bent elbow compressions, and one of the reasons modern technique uses straight arms.
Audio problem: After Potter convinces Saunders he still wants to live, the hiss from the anesthesia machine fades out even while Potter and Saunders are still standing next to it. Neither Potter nor Saunders turned off the valve again.
Revealing mistake: Klinger makes a big show of removing a big nut from the Jeep's leaf spring. The nut is clean and shiny whereas the rest of the undercarriage is painted and dirty. If you look closely, there are no screw threads where he takes it off either, there's another hex under it. The simple reason for this is that that nut doesn't belong there and never was affixed, Jamie Farr just pretended it was.
Deal Me Out - S2-E13
Continuity mistake: During the poker game Frank walks in wearing a white hospital scrub, then the camera pans to Sidney and back to Frank who is now wearing a army jacket. (00:08:12)
Continuity mistake: In the office, Radar is getting ready for bed, and has taken off his shirt. When he goes to tuck in his Teddy, he suddenly has sleeves.
Continuity mistake: In the beginning of the episode Colonel Potter is painting a portrait of Hawkeye with his feet up, and Klinger's picture is hanging to the right of the door. But in the previous episode 'Korean surgeon' Klinger's portrait is on the left side of the door and the one of Hawkeye's is on the right side of the door, even though that portrait wasn't painted until the following episode. (00:03:15 - 00:17:55)
Where There's a Will, There's a War - S10-E16
Continuity mistake: At Battalion Aid, Hawkeye gets under a table to write. An explosion knocks two of the three stacks of cardboard boxes off the table above him. When the angle changes, there's now two stacks, where there should be only one.
Continuity mistake: As Ames is pitched the idea of diet and exercise, he has his fork up with a bite of egg on it. When Hawkeye reaches for the fork, it's upside down and clean.
Factual error: When the South Korean Colonel and General are in the Mess Tent with BJ, their rank insignia is wrong. The insignia the Colonel is wearing is for a U.S. Colonel, and the General's insignia would not be three stars in a horizontal line.
Audio problem: While trying to fix the projector, Klinger says, "The bulb is hot!", but his mouth doesn't move.
Audio problem: As the Scrounger comes up to Hawkeye and BJ as they walk out after visiting Radar, you hear the horn honk, but the horn button never gets hit.
