When the Stooge's Buzzard goes into a tailspin, another plane streaks by with colored smoke trailing behind. This suggests the filmmaker's used footage from an air-show.
When Larry hands Moe a cigar, it changes from his left to right hand between shots.
A cigar magically appears in Larry's mouth when he and Curly rush over to the well Moe fell in.
The melted rubber stain on the ceiling beam disappears when Moe flies through the hangar's roof opening.
When Moe gets his fingers caught in the vice, Curly turns the handle clockwise twice, even though a vice can only be turned once.
When Curly throws the control lever out of the plane it can be heard landing on the stage floor.
When Moe tells Curly to "shut up" in one scene, Curly can be seen mouthing the same line.
The melted rubber stain on the ceiling beam appears too early before Moe hits his head.
When Moe is heard reading the letter, he mispronounces the word "proven".
When Curly uses the shotgun to blow up the rubber suit, he accidentally elbows Larry in the chest, he can be seen with a pained expression.
Many of Moe's yells and screams are clearly dubbed in when he is seen floating in the sky.
Wires can be seen hoisting Moe up when he gets hit by the propeller.
After Moe falls in the well, the film dissolves to the three men back at work on the airplane, and Moe is wearing the same jumpsuit as at the beginning of the short. But earlier, he had it covered in rubber cement, inflated with gas, and he left it floating mid-air when he was blasted out of it, so how could he get back into the same jumpsuit?
Curly turns the vice handle clockwise and jams Moe's hand into the vice. Then, both of the guys turn it clockwise again to loosen it, instead of turning it counterclockwise.
Actress Judy Malcolm and another are listed in the credits as "Girl in hangar". There are no girls in the hangar in the copy of this episode that I own.