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26 Oct 2015 - ZS-OAA, 737-400, Comair, MLG collapse on landing at Johannesburg, South Africa.

The F/O flared at 65 feet (instead of the recommended 20 feet) resulting in a long landing. Following touch down excessive vibrations built up which resulted in the upper torsion link failure. During disassembly of the shimmy damper oil was found in the thermal relief valve which might have impaired the operation of the shimmy damper. Significant wear was found at the upper torsion link bushes which may have contributed to the collapse. "The landing gear following the sequence of events, failed in accordance with the failsafe design purpose."

For a full analysis of 737 Classic MLG failures on landing please follow this link.

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*** Updated 18 Apr 2020 ***

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