Accident Champion 7GCBC N9677S,
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ASN Wikibase Occurrence # 41307
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Date:Sunday 19 January 1997
Type:Silhouette image of generic CH7B model; specific model in this crash may look slightly different    
Champion 7GCBC
Owner/operator:Cottage Grove Aviation
Registration: N9677S
MSN: 28
Total airframe hrs:2039 hours
Fatalities:Fatalities: 2 / Occupants: 2
Aircraft damage: Destroyed
Location:Creswell, OR -   United States of America
Phase: Manoeuvring (airshow, firefighting, ag.ops.)
Departure airport:Cottage Grove, OR (61S)
Destination airport:
Investigating agency: NTSB
Confidence Rating: Accident investigation report completed and information captured
The 7-GCBC Champion was observed engaged in repeated spin maneuvers. A witness reported observing that 'the plane was heading straight down spinning clockwise again' and 'was close to the elevation where it pulled out the first time. (That's) when I saw a piece of the plane come off.' This was the pilot's fifth flight since checking out in the aircraft (3.4 hours total flight time). According to witnesses, spins were conducted on all five flights. Postcrash examination revealed that the outboard right wing tip cap and some attached wing fabric had separated from the aircraft during flight. The examination also revealed that the forward and aft right wing spar structure were at the ground impact site of the fuselage. The right wing forward spar displayed upwards bending deformation and splintering just outboard of the forward wing strut attach point. NTSB records indicated the aircraft had been involved in an accident on 6/13/77 in Alaska; however, no aircraft records could be located to ascertain the extent of the damage, if any, to the right wing. An examination of the right wing spar structure revealed that it was within dimensional tolerances set by the manufacturer. CAUSE: the pilot exceeded the design stress limits of the aircraft, while recovering from a spin, which resulted in failure and separation of the right wing tip and adjacent wing fabric (skin).



Revision history:

24-Oct-2008 10:30 ASN archive Added
21-Dec-2016 19:23 ASN Update Bot Updated [Time, Damage, Category, Investigating agency]

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