WITTS SPRINGS, AR, USA
N7487F
HUGHES 269C
WHILE MANUEVERING AT AN ALT OF 35 TO 40 FT ABOVE TREE THE PLT FELT A SHUTTER AND LOW FREQUENCY SHAKING OF THE ROTOR DISK. ROTOR RPM AND ENGINE RPM DECREASED AND THE ACFT ENTERED A SHALLOW DESCENT. THE PLT APPLIED FORWARD CYCLIC, REDUCED COLLECTIVE AND INCREASED THROTTLE. WITH INSUFFICIENT ALT TO RECOVER THE PLT MANEUVERED THE ACFT AWAY FROM TALL TREES AND SETTLED THE ACFT INTO AN AREA OF SMALL TREES. NO MECHANICAL FAILURE/MALFUNCTION WAS FOUND. THE ALT AT THE ACCIDENT SITE WAS 2000 FT MSL WITH A DENSITY ALT OF APRX 4500 FT MSL.
Source: NTSB Aviation Accident Database
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