Aviation Accident Summary LAX91LA097

PIRU, CA, USA

Aircraft #1

N8491A

ROBINSON R22A

Analysis

THE CFI WAS DEMONSTRATING A 180 DEGREE AUTOROTATION TO HIS STUDENT IN A 25 KT WIND. THE CFI ALLOWED THE MAIN ROTOR RPM TO BLEED OFF AND WAS UNABLE TO RECOVER THE RPM BEFORE TOUCHDOWN. THE HELICOPTER LANDED HARD AND THE MAIN ROTOR SEVERED THE TAILBOOM. THE HELICOPTER THEN ROLLED OVER.

Probable Cause and Findings

FAILURE OF THE CFI TO MAINTAIN MAIN ROTOR RPM DURING A DEMONSTRATED AUTOROTATION.

 

Source: NTSB Aviation Accident Database

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