Due to the absence of specific plot details or character information related to LGBTQ+ themes for 'X312 - Flight to Hell, 1971', a definitive assessment of its portrayal is not possible. There is insufficient data to determine the presence or nature of any such depictions.

There is no information available to suggest the presence of transsexual characters or themes in the film "X312 - Flight to Hell, 1971." Therefore, an assessment of its portrayal cannot be made, as there is no depiction to evaluate.

The film features a female character who seeks revenge by killing several male targets. Her methods typically involve seduction followed by surprise attacks using weapons like knives or poison, rather than direct physical combat where she demonstrates superior fighting skill or strength against her opponents.

The film "X312 - Flight to Hell" is an original 1971 production, and no prior source material, historical figures, or previous adaptations are indicated. Therefore, its characters are considered original creations, and no gender swaps can be identified against pre-established canon.

The provided information does not indicate that 'X312 - Flight to Hell, 1971' is an adaptation of existing material or based on historical figures. Without prior canon or historical context for its characters, it's impossible to determine if any race swaps occurred.