On 17 January 1949, the British South American Airways Avro Tudor IV Star Ariel left Bermuda for Kingston, Jamaica, with 20 people aboard. About an hour into the flight the crew sent a routine position report. Nothing was heard from it again. No wreckage was ever found.
Why this one is stranger than Star Tiger
Star Tiger had at least some contributing circumstances: low altitude, stronger than forecast headwinds, a thin fuel margin, night, deteriorating weather.
Star Ariel had none of them. The weather was excellent. The aircraft was cruising at around 18,000 feet, giving it real altitude to work with. It was daytime. The fuel state was comfortable. The last transmission was entirely routine, reporting the aircraft on course and requesting a frequency change.
The search was extensive — the US Navy contributed substantial resources — and covered a wide area of open ocean. It produced nothing: no debris, no oil slick, no bodies.
What the investigation concluded
The official report reached the same place as Star Tiger's: cause unknown, with no evidence available on which to base a finding. Two disappearances of the same aircraft type from the same operator within twelve months, both without a distress call and both without wreckage.
What that pattern suggests
Two losses of one type in one year is not a coincidence, and it is not evidence of anything unusual about the Atlantic. It points to the aircraft.
The Avro Tudor had a difficult development and a poor reputation. It was a pressurised design derived from a wartime bomber, and its cabin heating system used a fuel-burning heater in a location that raised concerns. Investigators considered whether a failure in the pressurisation or heating systems could produce a sudden, catastrophic and unannounced event at altitude — something fast enough that a crew would never transmit.
No evidence was ever available to confirm it, because nothing was recovered. But the hypothesis fits the two facts common to both losses: no distress call, and no floating debris.
What followed
The Tudor was immediately withdrawn from passenger service. British South American Airways, a small operator that had suffered several fatal accidents in a short period, was merged into BOAC later that year and ceased to exist as an airline.
Star Tiger and Star Ariel are staples of Bermuda Triangle literature, usually presented as unrelated aircraft vanishing in the same waters. They were not unrelated. They were the same rare aircraft type, operated by the same troubled airline, lost fourteen months apart — and the airline did not survive them.