# Accident 19930827031629A: Robsin R22, Alton/St Louis, IL, August 27, 1993

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: August 27, 1993, 17:45 local time
- Place: Alton/St Louis, IL
- Airport: St Louis Regional
- Damage: Substantial damage
- Phase of flight: Final Approach
- Operating rules: General operating rules (Part 91)
- Location: 38.9008° N, 90.0399° W: From the FAA, an estimate near the named town, within about 3 miles
- Nearby events: https://openairdocs.org/map.md?lat=38.9008&lon=-90.0399&mi=10
- Aircraft: N9071S, a cancelled registration (https://openairdocs.org/deregistered/N9071S-1994-08-24) (OpenAirDocs)
- Registry model: Robinson Helicopter R22 (registry code 7640102, https://openairdocs.org/model/robinson-helicopter-r22) (OpenAirDocs)
- Reported make and model: ROBSIN R22
- Reported engine: LYC O320A2C
- People aboard: 1
- Fatal injuries: 0
- Pilot flight hours: 1,235 total, 1,080 in this make and model, 51 in the last 90 days
- NTSB investigation: [NTSB CHI93LA340](https://openairdocs.org/ntsb/CHI93LA340) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/19930827031629A

## Narrative

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

ROTOR SPEED DECAYED ON APPROACH. AUTOROTATED TO CROP FIELD. HARD LANDING CAUSED SUBSTANTIAL DAMAGE.

## 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 CHI93LA340](https://openairdocs.org/ntsb/CHI93LA340), Aug 27, 1993: Robinson R22 (N9071S), Bethalto, IL, substantial damage. Probable cause: the pilot-in-command's not maintaining rotor RPM.

## Other reports on N9071S (2)

Matched to the same aircraft by N-number and date.

- [Accident 19900727029089A](https://openairdocs.org/incident/19900727029089A), Jul 27, 1990: Robsin R22BETA (N9071S), Paducah, KY, Substantial damage. Lost tail rotor control on liftoff downed collective caused hard ground impact. Intermediate flexplate failed.
- [Incident 19820313011349I](https://openairdocs.org/incident/19820313011349I), Mar 13, 1982: Robsin R22 (N9071S), New Cumberland, PA, Minor damage. Demo of torque effect on quick stops to hover. Allowed RPM decay. Settled to muddy ground. Tail rotor strike.

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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.