ASN Wikibase Occurrence # 268950
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| Date: | Wednesday 22 November 2000 |
| Time: | 14:00 LT |
| Type: |  SlipStream Genesis |
| Owner/operator: | |
| Registration: | N9931W |
| MSN: | 075 |
| Total airframe hrs: | 31 hours |
| Engine model: | Subaru E81 |
| Fatalities: | Fatalities: 1 / Occupants: 1 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Fort Collins, Colorado -
 United States of America
|
| Phase: | En route |
| Nature: | Test |
| Departure airport: | Fort Collis, CO (FNL) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
While the pilot/builder was conducting the 28th test flight following construction of the homebuilt aircraft, witnesses observed the aircraft flying in a westerly direction about 1,500 feet above the surface. The witnesses said the wings appeared to fold up and the aircraft descended vertically and impacted the ground in a open field trailing a streamed parachute. Investigation revealed the aircraft had been equipped with an aircraft recovery parachute and it had been activated by the pilot/builder. During deployment, the parachute had gone through the propeller and sheared off all the propeller blades. It also revealed a structural failure in the airframe where the pilot had drilled multiple holes at the left horizontal stabilizer attach point. The failure allowed the horizontal and vertical stabilizer to be displaced over the top of the aircraft. The aircraft was of a pusher propeller design and research into the parachute system provided information that in pusher propeller aircraft installations, the engine must be secured prior to the deployment of the parachute to prevent the parachute from becoming entangled in the propeller. The parachute shroud lines and Kevlar retention strap were wrapped around the propeller shaft and hub preventing the parachute from opening.
Probable Cause: Failure of an airframe stringer due to improper construction by the builder/pilot which rendered the aircraft uncontrollable. A factor was failure by the builder pilot to follow procedures and secure the engine prior to deploying the aircraft recovery parachute.
Accident investigation:
 |
|
Sources:
NTSB DEN01LA017
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 15-Oct-2021 19:36 | ASN Update Bot | Added |
| 15-Oct-2021 19:40 | harro | Updated [Aircraft type, Total fatalities, Other fatalities, Narrative] |
Corrections or additions? ... Edit this accident description
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