# NTSB investigations: Robinson Helicopter R22 ALPHA, MD

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 BFO94LA035](https://openairdocs.org/ntsb/BFO94LA035.md): Robinson R-22A · Gaithersburg, MD · Accident · No injuries · Limited investigation · Final report · Jan 25, 1994 · N8559A · Substantial damage
  > The pilot's failure to maintain rotor RPM which led to an in flight loss of control resulting in a collision with the runway and the helicopter rolling over on its side. A factor in this accident was the pilot's lack of total experience flying helicopters.
- [NTSB BFO88LA076](https://openairdocs.org/ntsb/BFO88LA076.md): Robinson R22A · Gaithersburg, MD · Accident · No injuries · Limited investigation · Final report · Aug 27, 1988 · N8559A · Substantial damage
  > The flt was initiated with the student plt bringing the helicopter up to a hover with some forward speed. The student rapidly and forcefully applied aft cyclic. The CFI was unable to compensate in time, even though he was on the controls with the student. The…

## 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."eventStateOrRegion" = 'MD' AND c."eventCountry" = 'USA'
  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&state=MD

---
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.