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Wikipedia definition
1. Aft pressure bulkheadThe aft pressure bulkhead is a component of all large commercial aircraft. It is an airtight bulkhead located between the cabin and the tail of the aircraft. Its purpose is to seal the rear of the plane and thus maintain cabin pressure, and as such it is a vital part of the aircraft. Japan Airlines Flight 123 crashed after a catastrophic failure of the aft pressure bulkhead.
Read “Aft pressure bulkhead” on English Wikipedia
Read “圧力隔壁” on Japanese Wikipedia
Read “Aft pressure bulkhead” on DBpedia

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