ASN Wikibase Occurrence # 41039
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| Date: | Saturday 21 October 1995 |
| Time: | 10:36 LT |
| Type: | Fallbeck DYKE DELTA JD2 |
| Owner/operator: | Richard E. Fallbeck |
| Registration: | N515D |
| MSN: | 1144 |
| Total airframe hrs: | 3 hours |
| Engine model: | Lycoming IO-360-A1A |
| Fatalities: | Fatalities: 1 / Occupants: 1 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Safford, AZ -
 United States of America
|
| Phase: | Manoeuvring (airshow, firefighting, ag.ops.) |
| Nature: | Unknown |
| Departure airport: | , AZ (KSAD) |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The owner/builder (pilot) of a home built airplane was on a test flight to evaluate the slow speed flight characteristics of the airplane after installation of fixed tabs on the wing tip trailing edges. During the flight, the airplane crashed on the downhill side of a 50-foot knoll. The wreckage exhibited evidence of vertical impact loads and a low impact angle. The designer of the original prototype described a fully developed stall in this airplane as a mushing characteristic, resulting in a high sink rate and temporary loss of control. The designer also stated that the pilot's incorporation of a T-tail was a contravention of the original design specifications. The pilot had previously recorded stall speeds of 100 mph. The designer's intended stall speed was 75 mph for an unmodified airplane.
Probable Cause: Improper planning/decision by the owner/builder (pilot), which resulted in his failure or inability to recover from a stall/mush condition.
Accident investigation:
 |
|
Sources:
NTSB LAX96LA003
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Oct-2008 10:30 | ASN archive | Added |
| 21-Dec-2016 19:23 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 09-Apr-2024 11:19 | ASN Update Bot | Updated [Time, Operator, Other fatalities, Departure airport, Source, Narrative, Category, Accident report] |
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