NTSB Identification: DEN93LA080.
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Accident occurred Friday, July 16, 1993 in BOULDER, CO
Probable Cause Approval Date: 06/30/1994
Aircraft: GLASFLUGEL STANDARD LIBELL, registration: N4362
Injuries: 1 Minor.

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

ACCORDING TO THE PILOT, DURING INITIAL CLIMB FOLLOWING TAKEOFF, WHILE UNDER TOW ON A GLIDER FLIGHT, THE SPOILERS DEPLOYED AND COULD NOT BE RETRACTED. THE PILOT RELEASED FROM THE TOW AND ATTEMPTED TO RETURN TO THE AIRPORT. THE GLIDER IMPACTED IN A FIELD APPROXIMATELY 1/2 MILE SHORT OF THE RUNWAY. THE PILOT STATED THAT THE SPOILERS HAD BEEN MISRIGGED.

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

IMPROPER RIGGING OF THE SPOILER SYSTEM BY MAINTENANCE PERSONNEL, WHICH CAUSED AN UNCOMMANDED SPOILER DEPLOYMENT AND PREVENTED SPOILER RETRACTION BY THE PILOT. A FACTOR WAS UNSUITABLE TERRAIN FOR A FORCED LANDING

Full narrative available

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