Watch Thunderbirds Season 1 Episode 12 full movie online free in HD with English subtitles – no download needed.
Thunderbirds: An experimental passenger plane (Fireflash) crashes while being tested to understand what may have led to a previous accident. Unlike previous flights International rescue believe there may be survivors trapped in the wreckage at the bottom of the sea. After the rescue the boys review the information and notice some odd behavior by the plane shortly before the crash. They request permission to test fly the plane and discover the terrible secret behind the crashes