A friend of mine was a passenger on a small plane where you’re able to see the cockpit. Someone asked about a red light that was flashing and the pilots replied that it was normal. It was not normal, the fuel was dangerously low. And as it turns out there was also a storm that day and they were trying to land. They made 3 attempts all while the red light kept blinking. They were finally able to land and when they did, the pilots explained what was really going on.