- Mile High Club is slang for engaging in sexual activity aboard an aircraft.
- The terrorist holding the hostage can be shot by other members of the squad if the hostage escapes. This happens if the player shoots either the terrorist's gun or the terrorist's leg.
- If the abductor is killed by headshot, the player cannot take his Uzi as if it is glued on his hand; If hit by a non-lethal shot first, the Uzi drops and can be picked up upon his death.
- According to the "dev. only" missions when enabling the developer cheat via the console in the PC version, "Mile High Club" was the first level to be completed, with a completion date of April 2007.
- In the briefcase containing the bomb, there is a small picture of a comical-style bomb grinning, and the word, "Booooooom" written alongside it.
- Some unused audio files shed some light on the mission's purpose:
- airplane_gaz_1_1_R has Gaz saying "Remember, the objective is to capture Kriegler, I repeat, capture Kriegler, alive. He's no good to us dead."
- airplane_gaz_7_2_R has Gaz saying "Watch your fire up here, we need Kriegler alive."
- airplane_gaz_9_1_R has Gaz saying "Nice one, Soap."
- airplane_gaz_9_5_R has Gaz saying "We're going for a little free fall Kriegler! On your feet!"
- The sound files also indicate that the hostage the player rescues is Russian.
- airplane_gaz_1_1_R has Gaz saying "Remember, the objective is to capture Kriegler, I repeat, capture Kriegler, alive. He's no good to us dead."
- At the beginning of the mission, two members of the player's squad have a conversation with each other, saying "We're going deep, and we're going hard." to which the second replies "Surely you can't be serious?" and the first says "I'm serious... and don't call me Shirley." This is a reference to the parody-comedy film Airplane!.
- When finished with the mission, a picture is shown of Vasquez, Gaz, Price, and Griggs in a line. Some writing to the side of them says "Semper Fi". This is the motto of the United States Marine Corps, short for "Semper Fidelis", which means "Always Faithful" in Latin.
- The words written on the picture at the end of the level is a reference to the movie Full Metal Jacket.
- With the use of 'Ragtime Warfare' or the Wii version, a TF141 member says "Drop the weapon! Down on the floor, now!" during the slow-mo part.
- The final rescue shoot is hard-coded to be done with USP; a new USP will respawn if swapped away earlier. It is possible to switch to another weapon by switching to the USP .45 before reaching the final door, but only momentarily before switching back to USP.
- The music heard throughout the level is a blend of all themes played during the campaign, and is titled "Don't Call Me Shirley."
- According to Soap's Journal, this level takes place after the events of Call of Duty 4, is conducted by Task Force 141 and takes place at 9:37 in the morning.
- The dead civilians on the plane are of extremely low detail.
- If the player were to skip the entirety of the level by using console commands "ufo" or "noclip" and secure the hostage, one can see that one of the TF141 members still downstairs from the beginning of the level.
- Free-falling from the earlier 'hull breach' on the lower deck, even after the escape of the hostage, will fail the mission. This is likely a developer's oversight, as it is illogical to assume the location of jump would matter for a parachute-equipped soldier.