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ASN Wikibase Occurrence # 60814
Last updated: 2 June 2019
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Type:Glasflügel H-201B Standard Libelle
Registration: N17TD
C/n / msn: 556
Fatalities:Fatalities: 0 / Occupants: 1
Aircraft damage: Substantial
Location:Meadow Lake Airport, Colorado Springs, CO -   United States of America
Phase: Take off
Departure airport:Meadow Lake, CO (OOV)
Destination airport:Meadow Lake, CO (OOV)
Investigating agency: NTSB
The glider flight was being conducted to test the operation of a prototype winch launch system utilizing a computer aided launch control (CALC) hydrostatic system. During the launch, a programming anomaly within CALC limited the maximum winch speed to 32 miles per hour, causing the winch cable to release as the glider climbed away from the ground. The pilot pushed the nose of the glider down, but insufficient altitude was available to recover the glider. The glider impacted the runway in a level attitude, cracking the fuselage.
Probable Cause: A programming anomaly within the winch's computer aided launch control system, which incorrectly limited the maximum winch speed during launch of the glider.



Revision history:

22-May-2009 01:50 DColclasure Added
04-Jul-2009 10:57 DColclasure Updated
21-Dec-2016 19:25 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
02-Dec-2017 14:55 ASN Update Bot Updated [Cn, Operator, Other fatalities, Nature, Departure airport, Destination airport, Source, Narrative]

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