Alaska Airlines 737-900 MAX loses a door in-flight out of PDX

[Jhieminga]

You need to convert the 271 KIAS to TAS (use https://indoavis.co.id/main/tas.html for example) and then convert that to ft/s. I have guessed at some of the values or used standard values, but that gets me 283.75 lbf/ft^2 or 1.97 psi.