ASN logo
ASN Wikibase Occurrence # 60814
Last updated: 2 June 2019
This information is added by users of ASN. Neither ASN nor the Flight Safety Foundation are responsible for the completeness or correctness of this information. If you feel this information is incomplete or incorrect, you can submit corrected information.

Date:04-MAY-2009
Time:13:07
Type:Glasflügel H-201B Standard Libelle
Owner/operator:Private
Registration: N17TD
C/n / 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)
Destination airport:Meadow Lake, CO (OOV)
Investigating agency: NTSB
Narrative:
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.

Sources:

NTSB: https://www.ntsb.gov/_layouts/ntsb.aviation/brief.aspx?ev_id=20090505X75616&key=1


Revision history:

Date/timeContributorUpdates
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]

Corrections or additions? ... Edit this accident description