One More AD for the Sikorsky S-92's Gearbox | Aviation International News

One More AD for the Sikorsky S-92's Gearbox

By Thierry Dubois • Writer

July 24, 2012

In another safety issue affecting the Sikorsky S-92 helicopter’s main gearbox, on July 18 the FAA released an airworthiness directive (AD) that calls for inspection for cracks. The AD was prompted by the discovery of a crack in the gearbox housing of one S-92, “in the cored passage area adjacent to the scissor bracket mount,” allowing oil to leak. The result could be a loss of oil and subsequent failure of the gearbox, the FAA said.

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