Accident Schweizer SGU 2-22CK N3907A,
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ASN Wikibase Occurrence # 286767
 
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Date:Friday 24 July 2009
Time:05:00 LT
Type:Schweizer SGU 2-22CK
Owner/operator:Civil Air Patrol
Registration: N3907A
MSN: 66
Total airframe hrs:2190 hours
Fatalities:Fatalities: 0 / Occupants: 2
Aircraft damage: Substantial
Category:Accident
Location:Ephrata, WA -   United States of America
Phase: Take off
Nature:Training
Departure airport:Ephrata Airport, WA (EPH/KEPH)
Destination airport:Ephrata Airport, WA (EPH/KEPH)
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
Narrative:
The certified flight instructor (CFI) and student pilot were onboard the glider readying it for an automobile tow launch. The CFI reported giving the 'take up slack' command to the wing walker, who was steadying the wings. Before the slack was taken up by the tow vehicle driver, the wing walker prematurely gave the launch signal. The tow driver then accelerated and the glider was suddenly launched into the air. The CFI attempted to control the glider by applying full forward elevator and simultaneously attempting to release the tow line. The glider struck the ground with the line still attached and was again launched into the air as the tow truck continued to accelerate. The tow line then released and the nose of the glider struck the ground. The glider sustained substantial damage to the aft fuselage structure during the accident sequence.

Probable Cause: The premature launch signal given by the wing walker.

Accident investigation:
cover
  
Investigating agency: NTSB
Report number: WPR09CA368
Status: Investigation completed
Duration: 2 months
Download report: Final report

Sources:

NTSB WPR09CA368

History of this aircraft

Other occurrences involving this aircraft
31 July 1992 N3907A Civil Air Patrol Inc 0 Ephrata, WA sub

Location

Revision history:

Date/timeContributorUpdates
03-Oct-2022 15:43 ASN Update Bot Added
31-May-2023 12:43 Ron Averes Updated

Corrections or additions? ... Edit this accident description

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