Airplanes man… my 15” MBP 2015 would always make this case cracking sound when the plane reached a specific altitude. It had some battery swell, not noticeable.

Airplanes man… my 15” MBP 2015 would always make this case cracking sound when the plane reached a specific altitude. It had some battery swell, not noticeable. Scared the shit out of me, every time.