Why do airlines have a minimum fuel on landing requirements?

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This may not apply to all airlines, or apply to today’s world, but I was watching a video on Britannia 226A crash from 1999. In the video, they mentioned that the pilots were under pressure to land, so they wouldn’t have to explain to their bosses why they landed with less than the minimum amount of fuel required.

If a plane takes off, has to abandon a landing attempt, or complete an extra go around, or has to stay in a holding pattern, or has to divert… but they land safely without incident nor issue, why would that be an issue? What else could the pilots do?

Edit to add the answer (thank you for all of the replies, everyone! I misunderstood entirely what the video was attempting to convey): There are aviation safety boards with strict rules and landing with low fuel is grounds for a report and an investigation into the flight, so the safety boards can find the root cause for why the flight did not have an adequate amount of fuel on landing. The pilots may get into trouble if the investigation finds they were at fault, but it is more geared towards safety and attributing a root cause for the issue to make a low fuel event less likely in the future.

In: 707

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Anonymous 0 Comments

Probably not the case in this flight, but jet aircraft use fuel to cool down hydraulic fluid and engine oil. There is a small radiator in the fuel tank that oil and hydraulic fluid flows through to to cool it down. It needs to be submerged in fuel, otherwise it won’t get proper cooling. The biggest danger is called a thermal disconnect, if the generators get too hot a mechanical fuse made of solder will melt which prevents them generator from spinning in order to prevent a fire.

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