The Hunt for Red October (1990) - 6 major mistakes

Factual error: Aboard the aircraft carrier, there is a closed-circuit TV that shows the operations on the flight deck. At one point, a gull-gray F-14 Tomcat, in obvious distress, comes in for a landing. The camera cuts away from the TV to Ryan's face, and the cuts back to the TV. All of a sudden, the plane crashing is no longer an F-14, but an old Korean War-era fighter, colored the dark blue the Navy stopped using in the 1950s. The director probably chose to insert a piece of stock footage rather than build a model F-14 to crash for an otherwise unimportant scene.

Factual error: In the opening scene of the movie, the Red October is being escorted out of the Russian harbour by a United States Coast Guard Cutter and U.S. Navy sea tugs.

Visible crew/equipment: When the Red October sub has surfaced to let the crew get off because of the supposed nuclear leak, there is a brief shot where you can clearly see the camera and its filming crew in their tennis shoes on the deck. Use of slow motion is suggested. (As per the rules of this site: Use of slo motion IS acceptable when camera or crew are visible.)

Other: In the scene where the US is going to drop a torpedo on the Red October, when the helicopter lifts off from the deck, the torpedo is mounted on the starboard side. After the drop order, it drops from the port side of the chopper.

Factual error: The Hunt for Red October takes place sometime in late 1984. The Oliver Hazard Perry Class Frigate Reuben James (FFG-57) on which Adm. Greer and Skip Tyler were on board in the latter half of the film, was not commissioned until March 22, 1986

Revealing: In the scene where Jack Ryan is brought aboard the U.S.S. Dallas after releasing himself from the helicopter, two crewmen drag him inside. The crewman on the left side of the passage backs into a metal valve, but the valve moves down and left, then snaps back in place as if mounted to a rubber pipe.