ASN Wikibase Occurrence # 60814
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| Date: | Monday 4 May 2009 |
| Time: | 13:07 |
| Type: |  Glasflügel H-201B Standard Libelle |
| Owner/operator: | Private |
| Registration: | N17TD |
| MSN: | 556 |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Meadow Lake Airport, Colorado Springs, CO -
 United States of America
|
| Phase: | Take off |
| Nature: | Test |
| Departure airport: | Meadow Lake, CO (OOV) |
| Meadow Lake, CO (OOV) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
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.
Accident investigation:
 |
|
Sources:
NTSB
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 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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