# NTSB investigations: Robinson Helicopter R22 ALPHA, 1985

NTSB aviation accident and incident investigations since 1962: the probable cause, findings, aircraft, crew, weather and docket of each, linked to the FAA registry and the FAA’s own reports.

## Latest cases

- [NTSB ANC85LA121](https://openairdocs.org/ntsb/ANC85LA121.md): Robinson R-22A · Summit Lake, AK · Accident · No injuries · Limited investigation · Final report · Jul 7, 1985 · N8530J · Substantial damage
  > Helicopter struck glassy water lake during a low alt turn. Plt/flt instructor said he became disoriented during the turn, after he looked inside the helicopter briefly to check the rotor RPM. Accident occured during a bright night.
- [NTSB SEA85LA129](https://openairdocs.org/ntsb/SEA85LA129.md): Robinson R22 · Port Orchard, WA · Accident · No injuries · Limited investigation · Final report · Jun 9, 1985 · N8490D · Substantial damage
  > The instructor plt (CFI) with only 358 hrs total flt time was demonstrating an autorotation with a power recovery. During the recovery, the CFI failed to fully regain RPM & the helicopter settled to the surface. With a low rotor RPM, there was a loss of tail…
- [NTSB FTW85FPJ02](https://openairdocs.org/ntsb/FTW85FPJ02.md): Robinson R-22A · Mcalester, OK · Accident · No injuries · Final report · May 8, 1985 · N8556C · Substantial damage
  > The plt was using the helicopter to round up cattle. One cow charged the helicopter and struck the tail rotor. The helicopter pitched nose down, the main rotor blade struck the ground. The helicopter came to rest in an upright position.

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```sql
SELECT c."ntsbNumber", c."eventDate", c."eventType", c."eventCity", c."eventStateOrRegion", a.n_number, a."aircraftMake", a."aircraftModel", c."highestInjuryLevel", c."totalFatal", c."completionStatus", c.report_url
FROM 'https://openairdocs.org/data/latest/ntsb_case_detail.parquet' c LEFT JOIN 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' a ON a.case_mkey = c."mKey" AND a.position = 1
WHERE year(c."eventDate") = 1985
  AND c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('7640104'))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=7640104&year=1985

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