ASN Wikibase Occurrence # 35570
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| Date: | Sunday 5 July 1998 |
| Time: | 12:24 LT |
| Type: |  American Aviation AA-1A Trainer |
| Owner/operator: | Private |
| Registration: | N9453L |
| MSN: | AA1A-0253 |
| Total airframe hrs: | 1897 hours |
| Engine model: | Lycoming O-235-C2C |
| Fatalities: | Fatalities: 1 / Occupants: 1 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | Larkspur, CO -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Boulder, CO (1C5) |
| Pueblo, CO (KPUB) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The 265-hour private pilot filed a VFR flight plan from Boulder, Colorado, to Pueblo, Colorado, and requested VFR flight following services. Thirty minutes later, the pilot reported he was encountering 'moderate turbulence,' then 'quite a bit of turbulence,' that he was turning around, and requested flight following services back to Boulder. Shortly thereafter, the pilot advised he was in a spin and unable to correct and that he was turning off his transponder. The airplane struck the ground in a near-vertical attitude. There was no evidence of a spin. His logbook indicated he had never been demonstrated a spin or had been given spin instruction. The Pilot's Operating Handbook prohibits spins and states: 'There is evidence that permitting a spin to go beyond one turn without initiating proper recovery procedures can allow a spin mode to develop from which recovery is not possible.'
Probable Cause: The pilot inadvertently stalling the airplane and entering an unrecoverable spin. A factor was clear air turbulence.
Accident investigation:
 |
|
Sources:
NTSB FTW98FA299
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 24-Oct-2008 10:30 | ASN archive | Added |
| 21-Dec-2016 19:22 | ASN Update Bot | Updated [Time, Damage, Category, Investigating agency] |
| 06-Apr-2024 19:48 | ASN Update Bot | Updated [Time, Operator, Other fatalities, Phase, Destination airport, Source, Narrative, Category, Accident report] |
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