# NTSB investigations: Robinson Helicopter R22 ALPHA: In flight collision with terrain/water

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 NYC03CA207](https://openairdocs.org/ntsb/NYC03CA207.md): Robinson R-22A · Bedford, MA · Accident · No injuries · Data collection · Final report · Sep 28, 2003 · N56MU · Substantial damage
  > The certified flight instructor's failure to maintain ground clearance and his delayed remedial action, which resulted in a rollover.
- [NTSB LAX91LA097](https://openairdocs.org/ntsb/LAX91LA097.md): Robinson R22A · Piru, CA · Accident · No injuries · Limited investigation · Final report · Feb 10, 1991 · N8491A · Substantial damage
  > Failure of the CFI to maintain main rotor RPM during a demonstrated autorotation.
- [NTSB LAX90LA013](https://openairdocs.org/ntsb/LAX90LA013.md): Robinson R22A · Simi Valley, CA · Accident · Minor injuries · Limited investigation · Final report · Oct 26, 1989 · N84817 · Substantial damage
  > Student pilot's failure to maintain the proper altitude.
- [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.

## 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 c."mKey" IN (SELECT x.case_mkey FROM 'https://openairdocs.org/data/latest/ntsb_aircrafts.parquet' x WHERE x.aircraft_model_code IN ('7640104')
    AND EXISTS (SELECT 1 FROM 'https://openairdocs.org/data/latest/ntsb_occurrences.parquet' o WHERE o.case_mkey = x.case_mkey AND o.aircrafts_position = x.position AND o."occurrenceNumber" = 1 AND o."occurrenceCode" = 230))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=7640104&occurrence=230

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