WOODFORDS, CA, USA
N333AU
BEECH A36TC
THE WX DETERIORATED WHILE THE ACFT WAS CRUISING IN IMC AT 17,000 FT. MODERATE TURBULENCE & ICING CONDITIONS IN THE LAYERED CLOUDS WERE REPORTED BY OTHER NEARBY FLYING ACFT. THE PLT INFORMED ARTCC THAT HE 'LOST THE AUTOPILOT,' & THE ACFT'S COURSE BEGAN CHANGING RADICALLY. A GROUND BASED WITNESS DESCRIBED THE APPROACHING ACFT'S NOISE AS BEING SIMILAR TO THE 'SCREAMING' PRODUCED BY AN ACFT IN A POWER DIVE. THE SURFACE VISIBILITY WAS RESTRICTED BY SNOW TO BETWEEN 200 FT - 1/4 MI. CONTROL OF THE ACFT WAS LOST AND AN INFLIGHT BREAKUP OCCURRED. THE WRECKAGE WAS FOUND DISTRIBUTED OVER A 1/8 BY 3/4 MILE AREA. THE PRIMARY AIRFRAME FAILURE OCCURRED ON THE LEFT SIDE OF THE WING SPAR CARRY THROUGH STRUCTURE. THE STRUCTURE BROKE IN AN UPWARD (POSITIVE) DIRECTION. NO EVIDENCE FOR THE REPORTED LOSS OF THE AUTOPILOT OR WITH THE RELATED FLIGHT CONTROL SYSTEM WAS FOUND. THE ACFT WAS NEITHER CERTIFICATED NOT EQUIPPED FOR FLIGHT INTO ICING CONDITIONS.
Source: NTSB Aviation Accident Database
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