A question re. Brake energy and V1.
What is the max V1 speed that this 737 could have at max weight?
The brakes are certified to work for a Max weight rejected take off at V1 with Max braking. I suspect the max V1 will be around 170 kts. So this aircraft landed at a speed around 200 kts., at less than max weight, with over 12000ft of runway to stop in. I doubt the brake temps were over limits.
Also I don't think the altitude will affect the IAS but the TAS and ground speed will be higher.
I've been out of flying for over 10 years so maybe I've forgotten something.