Aircraft General Knowledgemedium#329
Maximum cabin differential pressure on a typical airliner is approximately:
A
8.5 psi
CorrectB
4.5 psi
C
2.0 psi
D
15.0 psi
Explanation
Typical maximum differential pressure is around 8.0–9.0 psi, allowing a cabin altitude of approximately 6,000–8,000 ft at cruise.
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