NTSB Identification: CHI87LA002.
The docket is stored on NTSB microfiche number 32126.
Accident occurred Wednesday, October 08, 1986 in WHITE BEAR LAKE, MN
Aircraft: LET L-13, registration: N142AS
Injuries: 1 Uninjured.

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 PLT REPORTED THAT HE ENTERED THE TRAFFIC PATTERN FOR RWY 30 AT APRX 900 FT AND COMPLETED A RIGHT TURN TO BASE. THE PLT STATED THAT WHILE ON BASE, HE REALIZED THE AIRCRAFT WAS TOO HIGH AND DEPLOYED THE SPOILERS HALFWAY. AS HE TURNED TO FINAL, HE STATED THAT HE WAS TOO LOW AND AT THAT POINT OBSERVED THE AIRSPEED DROPPING TO THE STALL POINT. IN AN ATTEMPT TO AVOID A STALL, THE PLT LOWERED THE ACFT NOSE AND REALIZED THAT HE WOULD NOT MAKE THE ARPT. ACCORDING TO THE PLT, HE THEN FLEW UNDER POWER LINES AND DELIBERATELY STRUCK A POWER LINE POLE WITH THE RIGHT WING AT APPROXIMATELY 30 FT AGL, IN ORDER TO DISSAPATE ENERGY. APPROXIMATELY 10 FT OF THE OUTBOARD RIGHT WING WAS SEVERED FROM THE ACFT AS IT ROTATED 90 DEGREES TO THE RIGHT AND DROPPED ABOUT 15 FT BEFORE COMING TO REST IN A SWAMP ABOUT 200 YARDS FROM THE ARPT. A WITNESS STATED THAT HE CLEARLY OBSERVED THE GLIDER'S SPOILERS IN A FULLY DEPLOYED POSITION WHEN THE ACFT ROLLED OUT ON FINAL.

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

SPOILER RETRACTION..NOT PERFORMED..PILOT IN COMMAND

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

LACK OF TOTAL EXPERIENCE..PILOT IN COMMAND

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

PROPER DESCENT RATE..NOT MAINTAINED..PILOT IN COMMAND

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

COMPENSATION FOR WIND CONDITIONS..INADEQUATE..PILOT IN COMMAND



Contributing Factors

WEATHER CONDITION..TAILWIND

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