To be fair, on the same page also there is the “taxi slowly if broken tank” failure mode, because it “can be ingested by an inlet”. For those who don’t have th

To be fair, on the same page also there is the “taxi slowly if broken tank” failure mode, because it “can be ingested by an inlet”. For those who don’t have the picture in mind, the first DC-3’s fuel valve was next to the air inlet. One day the operator didn’t watch the refill (They didn’t have autostop valves at the time), the fuel overflowed into the inlet, which certainly mixed it studiously with the air and pulverized the whole into the cabin. Man, aviation was wild at its beginnings.