NTSB Identification: ATL88LA120.
The docket is stored on NTSB microfiche number 36281.
Accident occurred Sunday, March 20, 1988 in WHITWELL, TN
Probable Cause Approval Date: 06/07/1989
Aircraft: SLINGSBY DART T-51, registration: N209K
Injuries: 1 Serious.

NTSB investigators may not have traveled in support of this investigation and used data provided by various sources to prepare this aircraft accident report.

THE GLIDER WAS OBSERVED TO MAKE A NORMAL RELEASE. WHILE STILL IN A TURN IT ENCOUNTERED A WIND SHEAR AND ROLLED INTO A VERTICAL BANK. IT SIDESLIPPED FOR A FEW SECONDS THEN THE NOSE DROPPED INTO A VERTICAL DIVE. THE PILOT STATED THAT WHEN HE ATTEMPTED TO PULL OUT INTO LEVEL FLIGHT THE ACFT BROKE APART. THE PLT USED THE PARACHUTE AND RECEIVED A BROKEN ANKLE. THE PRIVATE PILOT TEST STANDARD DOES NOT ADDRESS HIGH SPEED UNUSUAL ATTITUDE RECOVERIES IN GLIDERS.

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

FLIGHT CONTROLS..IMPROPER USE OF..PILOT IN COMMAND

The National Transportation Safety Board determines the probable cause(s) of this accident to be:

DESIGN STRESS LIMITS OF AIRCRAFT..EXCEEDED..PILOT IN COMMAND



Contributing Factors

WEATHER CONDITION..WINDSHEAR




Contributing Factors

INADEQUATE INITIAL TRAINING..FLIGHT INSTRUCTOR(ON GROUND)


Contributing Factors

INSUFFICIENT STANDARDS/REQUIREMENTS,AIRMAN..FAA(ORGANIZATION)

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