# Accident 20001010018969A: Enstrm F28F, Twin Falls, ID, October 10, 2000

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: October 10, 2000, 08:30 local time
- Place: Twin Falls, ID
- Airport: Twin Falls-Sun Valley Reg Josl
- Damage: No damage
- Operating rules: General operating rules (Part 91)
- Location: 42.4109° N, 114.5891° W: From the FAA, an estimate near the named town, within about 3 miles
- Nearby events: https://openairdocs.org/map.md?lat=42.4109&lon=-114.5891&mi=10
- Aircraft: N223RS, registered now (https://openairdocs.org/aircraft/N223RS) (OpenAirDocs)
- Registry model: Enstrom F-28F (registry code 3300412, https://openairdocs.org/model/enstrom-f-28f) (OpenAirDocs)
- Registry engine: Lycoming HIO-360 series (registry code 41524, https://openairdocs.org/engine/lycoming-hio-360-series) (OpenAirDocs)
- Reported make and model: ENSTRM F28F
- NTSB investigation: [NTSB SEA01LA003](https://openairdocs.org/ntsb/SEA01LA003) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20001010018969A

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

(-23)THESE FLIGHTS WERE MAINTENANCE TEST FLIGHTS. DURING THE THIRD AUTO-ROTATION OF N233RS, WHEN THE COLLECTIVE WAS DROPPED. THE ENGINE THROTTLE ROLLED OFF TOO FAR. THIS REQUIRED THE PILOT TO ADVANCE THE THROTTLE TO INCREASE POWER AVAIL. BEFORE HE COULD PULL COLLECTIVE TO TERMINATE THE AUTO-ROTATION. POWER WAS OBTAINED AT TOO LOW AN ALTITUDE CAUSING THE A/C TO CONTACT THE GROUND WITH A HIGHER THAN NORMAL VERTICAL DESCENT.

## The NTSB's investigation of this event (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB SEA01LA003](https://openairdocs.org/ntsb/SEA01LA003), Oct 10, 2000: Enstrom F-28F (N223RS), Twin Falls, ID, substantial damage. Probable cause: The pilot's failure to maintain adequate rotor rpm. Unsuitable terrain was selected for the maintenance test flight operation.

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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