Howlers are fundamental cock-ups like the Hurricane that explodes before it hits the fuel bowser in the B of B, space ships banking in turns and making jet engine sounds in just about every sci-fi movie ever. Space ships apparently firing guns fer Chrisakes, or unguided missiles as if it were the 1950s. Harrison Ford's revolver apparently ejecting cartridge cases that clink on the ground an impossibly short splitsecond after the shot. Air crashes that take 5 minutes and twenty seperate explosions from places where there is no fuel. Movie-style boiling red flame and black smoke napthalene explosions wherever they're seen. Nuclear blasts that make a rumbling grumbling noise with the flash from 20 miles away. Turbine helos making a Stuka like crescendo howl as they spiral down with an "engine failure", and smoke coming from the skids.
1950s registration! I'll remember that one!