ASN Wikibase Occurrence # 356942
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| Date: | Friday 2 August 1996 |
| Time: | 12:36 LT |
| Type: | Scott GLASS GOOSE |
| Owner/operator: | Private |
| Registration: | N96GG |
| MSN: | 1002 |
| Total airframe hrs: | 4 hours |
| Engine model: | Lycoming O-320B3B |
| Fatalities: | Fatalities: 0 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | Aubrey, TX -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Private |
| Departure airport: | Lake Dallas, TX (30F) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The experimental airplane was on its fifth flight. The pilot reported that about 15 minutes into the accident flight the airplane 'experienced flutter and began loosing altitude.' A few seconds before the forced landing, the engine lost power. The pilot reported that the airplane was controllable until the loss of engine power. The airplane impacted the ground in a 'yawed' attitude and tumbled, coming to rest in an inverted position. During the final approach for the forced landing, the upper right flaperon had departed the aircraft approximately 300 yards before the impact site. According to the pilot, who was also the builder of the airplane, he believed the flutter to be the result of his 'increasing the size of the flaperons from the designer's original design without a corresponding increase in the strength of the control system elements.' Contributing to this was the fact that the flaperons had not been balanced. Postcrash examination of the airplane revealed that the in-flight flutter had caused the upper right wing's fuel tank to rupture, and fuel had been spilled down the right side of the airplane. The fuel selector at the time of the accident was on the 'Right Upper' tank.
Probable Cause: The owner/builder's design change resulting in in-flight flutter of the flaperon, which led to the fuel tank rupture and separation of the flaperon.
Accident investigation:
 |
|
Sources:
NTSB FTW96LA331
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 13-Mar-2024 12:33 | ASN Update Bot | Added |
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