Accident Board Takes Fresh Issue with S-92 Main Gearbox | Aviation International News

Accident Board Takes Fresh Issue with S-92 Main Gearbox

Issues with Vespel spline adapters continue to overhang S-92 main gearboxes.

By Mark Huber • Contributor

September 26, 2022

The sudden loss of main gearbox (MGB) oil pressure in a Sikorsky S-92A, registration LN-ONH, last year has been tied to a worn vespel spline adapter driving one of two oil pumps, according to a recent report from the Accident Investigation Board of Norway (AIBN).

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