# NTSB investigations: Robinson Helicopter R22 MARINER: Loss of control - in flight

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 SEA04CA122](https://openairdocs.org/ntsb/SEA04CA122.md): Robinson R22 Mariner · Hillsboro, OR · Accident · Minor injuries · Data collection · Final report · Jul 5, 2004 · N856HA · Substantial damage
  > The pilot's failure to maintain aircraft control resulting in an uncontrolled descent and subsequent roll over. Low altitude flight and the pilot's encounter with settling with power were contributing factors.
- [NTSB FTW01LA039](https://openairdocs.org/ntsb/FTW01LA039.md): Robinson R22 · Sunnyvale, TX · Accident · No injuries · Limited investigation · Final report · Dec 17, 2000 · N7187W · Substantial damage
  > The flight instructor's inadequate supervision of his student and his failure to maintain control of the helicopter. Factors were the student pilot allowing the airspeed and main rotor RPM to get too low during the simulated emergency.
- [NTSB ANC99LA068](https://openairdocs.org/ntsb/ANC99LA068.md): Robinson R22 · Glennallen, AK · Accident · No injuries · Limited investigation · Final report · Jun 2, 1999 · N1929T · Substantial damage
  > The pilot's failure to maintain rotor RPM during takeoff. Factors associated with the accident were a downdraft, and uneven terrain.
- [NTSB SEA99LA005](https://openairdocs.org/ntsb/SEA99LA005.md): Robinson R-22 · Scappoose, OR · Accident · No injuries · Limited investigation · Final report · Oct 22, 1998 · N474BC · Substantial damage
  > Aircraft control was not maintained. Inadequate remedial action is a factor.
- [NTSB LAX94LA374](https://openairdocs.org/ntsb/LAX94LA374.md): Robinson R-22 · Chico, CA · Accident · No injuries · Limited investigation · Final report · Sep 23, 1994 · N4001B · Substantial damage
  > the student pilot's improper use of the flight controls. The student pilot's lack of experience in the helicopter is a factor in this accident.
- [NTSB ANC94LA096](https://openairdocs.org/ntsb/ANC94LA096.md): Robinson R-22 · Whittier, AK · Accident · No injuries · Limited investigation · Final report · Aug 2, 1994 · N2622M · Substantial damage
  > The pilot's failure to maintain rotor RPM. Factors were the ravine and the tailwind.
- [NTSB SEA94LA171](https://openairdocs.org/ntsb/SEA94LA171.md): Robinson R-22M · Portland, OR · Accident · No injuries · Limited investigation · Final report · Jul 7, 1994 · N42WC · Substantial damage
  > Tail rotor gearbox failure due to inadequate assembly and inspection procedures by the manufacturer.
- [NTSB ATL92FA085](https://openairdocs.org/ntsb/ATL92FA085.md): Robinson R-22 · Atlanta, GA · Accident · 1 fatal · Field investigation · Final report · Apr 22, 1992 · N2589X · Destroyed
  > The pilot's inadequate evaluation of the weather (wind condition), and the inflight decision to hover with gusting tailwinds, which resulted in a complete loss of tail rotor control. A factor was gusting tailwinds.
- [NTSB FTW91LA162](https://openairdocs.org/ntsb/FTW91LA162.md): Robinson R22 · Lewisville, TX · Accident · Minor injuries · Limited investigation · Final report · Sep 17, 1991 · N2306C · Destroyed
  > Loss of control due to foreign object damage induced binding flight controls. A factor was improper maintenance.
- [NTSB NYC90LA100](https://openairdocs.org/ntsb/NYC90LA100.md): Robinson R-22 · Lawrence, MA · Accident · No injuries · Limited investigation · Final report · May 3, 1990 · N24577 · Substantial damage
  > The pilot's improper use of flight controls, resulting in loss of control.
- [NTSB NYC87FA160](https://openairdocs.org/ntsb/NYC87FA160.md): Robinson R22 Mariner · So. Windsor, CT · Accident · 2 fatal · Field investigation · Final report · Jun 3, 1987 · N2287L · Destroyed
  > A loss of control in flight for undetermined reasons.

## 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 ('7640115')
    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" = 250))
ORDER BY c."eventDate" DESC, c."ntsbNumber" DESC
```

This list as a web page: https://openairdocs.org/ntsb?model=7640115&occurrence=250

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