Other mistake: When Savic is sleeping, a burst of energy from planet pushes the tree she is leaning on upward. There is a Klingon above that almost gets hit with it. Savic should have seen him and started moving with Spock. This might have been a scene meant to be used later at the climax. (00:57:00)
Star Trek III: The Search for Spock (1984)
1 other mistake - chronological order
Directed by: Leonard Nimoy
Starring: Christopher Lloyd, William Shatner, George Takei, Leonard Nimoy, Walter Koenig, DeForest Kelley, James Doohan, Nichelle Nichols
Visible crew/equipment: When the Enterprise is exploding, a Klingon is shown flying over the helm. When he lands, a person's arm can be seen on the right side of the screen, trying to grab his foot. (01:14:50)
More quotes from Star Trek III: The Search for Spock
Trivia: At the beginning of the movie Kirk rescues McCoy from a jail of some sort. Before leaving Kirk asks McCoy how many fingers he's holding up and does the Vulcan hand thing. However, Shatner had severe difficulties putting his fingers into place, they just wouldn't hold into position. So the crew wound up wrapping fishing line around Shatner's fingers, he would put them into position out of the camera and the shot quickly jumped while his fingers where still in place. If you look closely you see the line around his fingers. (Note that this problem occurred several times during Star Trek, actually, Nimoy and Leonard seem to be the only people doing this without a problem.)
Chosen answer: Scotty spent the best years of his career as the chief engineer of the flagship of the Federation: the Enterprise. His time has passed, however and the Federation is rumored to be planning on the Excelsior becoming the new flagship. It is a larger ship with a new, experimental warp drive. Scotty hates the Excelsior primarily due to his pride in the Enterprise but also because he is unimpressed by the design of the Excelsior. The trans-warp drive is easily sabotaged.