Passengers on a recent domestic flight in Russia had to endure temperatures as high as 122 degrees due to an air conditioning malfunction in the aircraft.

Considering how stressful flying can be, for some people more than others, you want to be able to sit back and know that everything is in order as you fly somewhere. Most of us assume that we are on a fully functional aircraft staffed by employees who are going to make the trip as smooth and enjoyable as possible.

If there is even a hint that something might be wrong with the plane, most of us would understandably feel extremely uncomfortable. That's why passengers on a flight to Poland felt uneasy recently when staff asked them for repair money in order for them to take off. Unsettling stuff. Unbearable heat filling the plane while it's sat on the tarmac would fill us with worry too.

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That's what happened on an S7, also known as Siberian Airlines, reports The Independent. Passengers told REN TV that as soon as they boarded the plane, they could feel heat blasting from the vehicle's ventilation system. "I put my hand up and it seemed to me that it burned my hand – probably it felt like 45-50°C," said one passenger. That's degrees Celsius, so as high as 122 degrees Fahrenheit.

Passengers were obviously extremely uncomfortable, and some considered leaving the aircraft. Once it had taken off, the problem seemed to rectify itself and the plane became cooler. Not for long, though. Eventually, the heat kicked in once again to such an extent that two passengers were taken ill. As if the experience wasn't horrible enough already, some aboard the plane claim that they could smell burning.

S7 has commented on the situation, but not with anything very helpful. The airline simply said that an investigation is being undertaken to try and discover what caused the problem and that at this time it can only confirm that there was a high temperature in the cabin throughout the flight. Thanks S7, we already knew that part. Worryingly, one flight attendant told a passenger that she had experienced the conditions on that same plane in the past.

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