I was doing a bit of a back of the envelope calculation the other day. The max cabin differential on the 737 Max is a hair over 8psi. If we assume that plug is

I was doing a bit of a back of the envelope calculation the other day. The max cabin differential on the 737 Max is a hair over 8psi. If we assume that plug is about 4ft x 3ft that is nearly 14000lb (about 6300kg) pushing on the plug. Quite extraordinary that it didn't fail on the first flight out of the factory.