Accident Quicksilver SPORT 2S N439MM, 08 Apr 2010
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ASN Wikibase Occurrence # 288599
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Time:18:00 LT
Type:Quicksilver SPORT 2S
Registration: N439MM
MSN: 0189
Fatalities:Fatalities: 0 / Occupants: 1
Aircraft damage: Substantial
Location:Canton, Texas -   United States of America
Phase: Manoeuvring (airshow, firefighting, ag.ops.)
Departure airport:Canton, TX (1TA7)
Destination airport:Canton, TX
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
While in a turn at low altitude, the pilot of the open cockpit experimental airplane heard a 'loud pop,' followed by a change in the feel of the flight controls. The pilot elected to reduce the engine power to idle and activate the ballistic recovery system (BRS). Seconds later the airplane impacted into an area of trees and came to rest in the trees near the ground. The pilot was able to exit the airplane unassisted. An examination of the wreckage revealed that the left wing rear strut threaded eyebolt had pulled free from the threaded barrel of the wing strut. The thread-to-barrel engagement was measured at 5/32 of an inch with approximately 16 threads exposed. Per the manufacturer's assembly manual, the eyebolt was to have a minimum of 5/8 of an inch thread-to-barrel engagement with approximately three-and-a-half threads exposed.

Probable Cause: The airplane builder's improper installation of the left rear wing strut eyebolt.



Accident investigation:
Investigating agency: NTSB
Status: Investigation completed
Duration: 3 months
Download report: Final report

Revision history:

05-Oct-2022 00:18 ASN Update Bot Added

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