Saturday, April 29, 2017

Mooney M20J 201, N3877H: Accident occurred June 18, 2016 in Clifton, Wayne County, Tennessee

Aviation Accident Final Report - National Transportation Safety Board: https://app.ntsb.gov/pdf

NTSB Identification: ERA16CA246 
14 CFR Part 91: General Aviation
Accident occurred Saturday, June 18, 2016 in Clifton, TN
Probable Cause Approval Date: 09/07/2017
Aircraft: MOONEY M20, registration: N3877H
Injuries: 4 Uninjured.

NTSB investigators used data provided by various entities, including, but not limited to, the Federal Aviation Administration and/or the operator and did not travel in support of this investigation to prepare this aircraft accident report.

The pilot stated that he was conducting a cross-country flight and flying in instrument meteorological conditions at 7,000 ft mean sea level (msl) when the airplane encountered turbulence. While climbing to a higher altitude, he encountered extreme turbulence at 8,500 ft msl. The pilot lost control of the airplane, which entered an uncontrolled dive, and descended to 5,600 ft msl before he was able to regain control. The pilot subsequently landed without further incident. A postflight inspection of the airplane revealed substantial damage to the right wing spar. The pilot reported no preexisting mechanical malfunctions or failures with the airplane that would have precluded normal operation; however, he stated that he may have overstressed the airplane during the recovery from the uncontrolled descent. A review of weather data revealed that there were no SIGMETs or AIRMETs for turbulence issued for the area of the accident around the time of the accident.

The National Transportation Safety Board determines the probable cause(s) of this accident as follows:
The flight's encounter with unforecast extreme turbulence, which resulted in a loss of airplane control and structural damage.

Additional Participating Entity:
Federal Aviation Administration / Flight Standards District Office; Nashville, Tennessee

Aviation Accident Factual Report - National Transportation Safety Board: https://app.ntsb.gov/pdf

Investigation Docket  - National Transportation Safety Board: https://dms.ntsb.gov/pubdms

http://registry.faa.gov/N3877H

NTSB Identification: ERA16CA246
14 CFR Part 91: General Aviation
Accident occurred Saturday, June 18, 2016 in Clifton, TN
Aircraft: MOONEY M20, registration: N3877H
Injuries: 4 Uninjured.

NTSB investigators used data provided by various entities, including, but not limited to, the Federal Aviation Administration and/or the operator and did not travel in support of this investigation to prepare this aircraft accident report.

The pilot stated that he was conducting a cross-country flight and flying in instrument meteorological conditions at an altitude of 7,000 ft mean sea level (msl) when the airplane encountered turbulence. While climbing to a higher altitude, he encountered extreme turbulence at 8,500 ft msl. The pilot lost control of the airplane, which entered an uncontrolled dive, and descended to 5,600 ft msl before he was able to regain control. The pilot subsequently landed without further incident. A post-flight inspection of the airplane revealed substantial damage to the right wing spar. The pilot reported no preexisting mechanical malfunctions or failures with the airplane that would have precluded normal operation; however, he stated that he may have overstressed the airplane during the recovery from the uncontrolled descent. A review of weather data revealed that there were no SIGMETs or AIRMETs for turbulence issued for the area of the accident, around the time of the accident.

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