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eeisner t1_j5nia8c wrote

Reply to comment by OldManCinny in NTSB details deadly accident involving airport ground worker | AP News by oliverkloezoff

Jet engines need time to cool down before they are safe to power down and approach safely. For example, procedure on a 737 is 3 minutes at taxi thrust (N2 30% or less) before it is safe to switch to APU for power and shut down the engines.

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axonxorz t1_j5p093e wrote

That's just to keep the coolant system online and drawing heat away at low throttle to reduce shock on the engines?

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