who intercept Flight 104 over the Alps. Seeing the empty cockpit, the Angels emit warning smoke to alert Scarlet and Blue. After gaining entry to the cockpit by shooting out the door, the officers discover that Flight 104 is nosediving into the Alps. However, the electricity from a power station breaks the Mysterons' hold on the airliner, and Scarlet and Blue are able to pull out of the dive before they crash into a mountain. Flight 104 makes its final approach to Geneva, piloted by Scarlet and Blue. However, one of Blue's bullets has damaged the circuit that operates the landing gear, which fails to deploy. Ordering Blue and the others to the back of the plane, Scarlet makes a successful crash landing but is killed when the front of the plane collides with a bunker. Aware of Scarlet's retro-metabolic powers, Blue assures Harry and Joe that the officer is all right. Production The subplot of the planned return to Mars is continued in "Noose of Ice", in which a new Earth space fleet is under construction. Although "Noose of Ice" was originally broadcast after "Flight 104", distributor ITC Entertainment's official running order places it before this episode, disrupting the series continuity. The episode's on-screen title, rendered in the series' regular Microgramma font, reads "Flight I04" with a letter "I" substituting for the "1". This change was made as it was thought that Microgramma "1"s looked too similar to "7"s and that rendering "104" entirely in numerals would confuse viewers. The title of the earlier episode "Crater 101" also uses "I"s in place of "1"s. The miniature model representing Geneva Airport first appeared as New York Central Airport in the Thunderbirds episode "The Duchess Assignment". The shot of the airport crash tenders moving into position is stock footage originally filmed for "Trapped in the Sky", the first episode of Thunderbirds. The incidental music that accompanies the scene of Flight 104's near miss with the mountain was originally composed for Stingray. The episode also recycles music from Supercar and Thunderbirds. Reception Anthony Clark of sci-fi-online.com criticises the pace of the episode, describing "Flight 104" as "torpid". According to writer Fred McNamara, the episode's "subdued, almost casual tone", which he regards as blending humour with spy themes, "brings a warm, approachable atmosphere to its intimate, neatly unfolding story." He describes scenes in which Joe secretly photographs Scarlet, only for the captain to