Bulkhead theory about fate of airliner

The Russian Airbus A321 that crashed in the Sinai peninsula on Saturday broke up in mid-air, possibly from a very sudden structural failure
causing explosive decompression of the fuselage
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Flight 9268

Tail strike: While landing at Cairo in November 2001, tail of aircraft hits tarmac – so-called tail strike reportedly causes substantial damage

Rear cabin Freight hold

Tail fin section: Remains of tail of Airbus are found 5km from rest of
wreckage, suggesting section may have split off in air

Rear pressure bulkhead: Critical seal in cabin’s pressurisation system.
Rupture of bulkhead at 31,000 feet would cause catastrophic breakup

Images show clear break near site of bulkhead, with fuselage skin peeling outwards from pressure
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Source: Flight Safety Foundation’s Aviation Safety Network

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