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ASN Wikibase Occurrence # 29675
Last updated: 25 November 2021
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Type:Silhouette image of generic VENT model; specific model in this crash may look slightly different
Schempp-Hirth Ventus a/16.6
Registration: N8KS
MSN: 325
Fatalities:Fatalities: 0 / Occupants: 1
Other fatalities:0
Aircraft damage: Written off (damaged beyond repair)
Location:Tucson, AZ -   United States of America
Phase: En route
Departure airport:
Destination airport:
Investigating agency: NTSB
After 4,5h of flight while cruising at 8000ft, the right aileron control system 'otellier fitting disconnected. The pilot said that the aileron trail position in the airstream caused the glider to enter a spiral to the right which could not be stopped by left aileron or rudder. The pilot bailed out at about 1000ft AGL. The glider was assembled on the 30th of May 1992 in accordance with flight and maintainance manual. The glider was then flown for 4,6h and parked overnight. The pilot said he lubed the male ball fitting prior to assembly as instructed in the manual and clean and lubed the slide lock blade with WD-40. The fitting manufactures safety maintanance info (not available for pilots) requires the ball and socket fittings to be lubed at each assembly, but caution against allowing lubricants on the slide lock plate because the slide "may loos itīs nonreversibility" and cause the fitting to disconnect. The gliderīs maintanance and flight manual does not contain caution against lubricants on the slide lock plate.


NTSB Identification: LAX92LA225

Revision history:

27-Sep-2008 01:00 ASN archive Added
02-Nov-2009 02:32 DColclasure Updated
20-Jan-2012 01:27 Alpine Flight Updated [Nature, Source, Damage, Narrative]
21-Dec-2016 19:16 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]
21-Dec-2016 19:20 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]

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