NTSB Offers Guidance on Tail-rotor Effectiveness | Aviation International News

NTSB Offers Guidance on Tail-rotor Effectiveness

Loss of tail rotor effectiveness can lead to loss of control, Board warns

By Mark Huber • Contributor

March 14, 2017

The NTSB recently issued a Safety Alert regarding the loss of tail rotor effectiveness (LTE) in helicopters. In issuing the alert, the Safety Board noted 55 accidents it investigated between 2004 and 2014 involving LTE. The NTSB noted the propensity for LTE, or uncommanded yaw, to occur suddenly in single-engine, conventional helicopters at speeds below 30 knots and the danger of it leading to loss of control.

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