ChatGPT suggests way lower numbers for take off / climb in a 737-8.
600-1000kg from brake to reaching cruise.
Straight from the horse’s mouth: https://web.archive.org/web/20230630013840/http://www.boeing...
In the first table they list 2307-2374 kg of fuel for takeoff and climb.
Isn’t a 737-8 the max 8 variant? It uses newer dual CFM LEAP-1B engines. How does it compare? I can’t really find the data. The spec you’re referring to is for the older 737-800.
Another fortune cookie:
https://www.aircraft-commerce.com/wp-content/uploads/aircraf...
It suggests an overall savings of ~14% over the 737-800 but doesn’t look at specific takeoff/climb comparison.
I wasn’t posting the LLM output as a source of truth. I was just using it to question the uncited value. And I still really don’t know the answer. If you’ve got another data source I’d love to get it.
So I don't think 220kg is enough to do a go-around in a 737 (well, a go-around would've been initiated with a bit more than 220kg in the tank - they burned some taxing to the gate - but you get my point.) I've read around 2,300kg for takeoff and climb on a normal flight in a 737-8. A go-around is going to use close to that, it's a full power takeoff but a much shorter climb phase up to whatever procedure is set for the airport and then what ATC tells you.
I just flew 172s but even with those little things we were told, your reserve is never to be used.
These people came very, very close to a disaster. Fortunately they had as much luck left as they did fuel.