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What caused Ansett-ANA Flight 325 to break up in mid-air?

Moonshot's Answer

Ansett-ANA Flight 325, a Vickers Viscount 832 aircraft, broke up in mid-air due to a fire that started in the starboard wheel well, which led to the failure of the wing structure. The fire was likely caused by a maintenance error that resulted in the oil metering unit becoming ineffective. This caused a fire within the cabin blower, which then spread to the fuel tank, weakening the wing structure. As a result, a large part of the left wing broke away, leading to the aircraft's crash into Botany Bay near Sydney on November 30, 1961. All twenty-four people on board were killed in the accident. The probable cause was identified as the ineffective means of securing the oil metering unit to the no.2 cabin blower, which initiated the fire. ASN Aviation Safety Network provides a detailed account of the accident.

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